U.S. patent application number 16/399505 was filed with the patent office on 2020-11-05 for video tagging by correlating visual features to sound tags.
The applicant listed for this patent is Sony Interactive Entertainment Inc.. Invention is credited to Sudha Krishnamurthy, Xiaoyu Liu.
Application Number | 20200349975 16/399505 |
Document ID | / |
Family ID | 1000004066015 |
Filed Date | 2020-11-05 |
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United States Patent
Application |
20200349975 |
Kind Code |
A1 |
Krishnamurthy; Sudha ; et
al. |
November 5, 2020 |
VIDEO TAGGING BY CORRELATING VISUAL FEATURES TO SOUND TAGS
Abstract
Automatically recommending sound effects based on visual scenes
enables sound engineers during video production of computer
simulations, such as movies and video games. This recommendation
engine may be accomplished by classifying SFX and using a machine
learning engine to output a first of the classified SFX for a first
computer simulation based on learned correlations between video
attributes of the first computer simulation and the classified
SFX.
Inventors: |
Krishnamurthy; Sudha; (San
Mateo, CA) ; Liu; Xiaoyu; (San Mateo, CA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Sony Interactive Entertainment Inc. |
Tokyo |
|
JP |
|
|
Family ID: |
1000004066015 |
Appl. No.: |
16/399505 |
Filed: |
April 30, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G06K 9/00718 20130101;
G11B 27/036 20130101; G11B 27/34 20130101; H04N 9/8715
20130101 |
International
Class: |
G11B 27/036 20060101
G11B027/036; G06K 9/00 20060101 G06K009/00; G11B 27/34 20060101
G11B027/34; H04N 9/87 20060101 H04N009/87 |
Claims
1. An apparatus, comprising: at least one processor; and at least
one computer storage that is not a transitory signal and that
comprises instructions executable by the at least one processor to:
classify sound effects (SFX) to render classified SFX; use at least
one machine learning engine to output at least a first of the
classified SFX for at least a first computer simulation at least in
part based on learned correlations between video attributes of the
first computer simulation and the classified SFX; input the first
computer simulation without sound to at least a first neural
network (NN) trained to learn correlations between visual features
in video and SFX tags; and input to the first NN information from
at least a first noisy SFX model comprising ground truth
classifications of noisy SFX.
2. The apparatus of claim 1, wherein the instructions are
executable to: recommend the first of the classified SFX for the
first computer simulation using direct mapping of elements in the
first computer simulation to a classification of the first of the
classified SFX.
3. (canceled)
4. The apparatus of claim 1, wherein the instructions are
executable to: input training data to the first noisy SFX model to
train the first noisy SFX model, the training data comprising audio
clips from one or more computer simulations and synthesized audio
clips.
5. The apparatus of claim 4, wherein the instructions are
executable to: input the training data to plural convolutional NN
(CNN) of the first noisy SFX model to render a first output; input
the first output to a classification mapper that renders a second
output comprising predictions of SFX for the first computer
simulation.
6. The apparatus of claim 1, wherein the first noisy SFX model
comprises: plural gated convolutional neural networks (CNN); at
least one bidirectional recurrent neural network (RNN) configured
to receive output of the plural gated CNN; plural attention-based
feed forward neural networks (FNN) configured to receive output of
the RNN.
7. The apparatus of claim 4, wherein the first noisy SFX model
comprises: plural gated convolutional neural networks (CNN) at
least one of which is configured to receive the training data; at
least a first classifier (CLF) network configured to receive output
of the plural gated CNN; and at least a second CLF network
configured to receive output of the plural gated CNN.
8. The apparatus of claim 7, wherein the first CLF network is a
supervised 32-category network configured for receiving output from
the plural gated CNN comprised of data from both the audio clips
from one or more computer simulations and the synthesized audio
clips.
9. The apparatus of claim 8, wherein the second CLF network is a
supervised 182-category network configured for receiving output
from the plural gated CNN comprised of data from the synthesized
audio clips but not from the audio clips from one or more computer
simulations.
10. An apparatus, comprising: at least one processor; and at least
one computer storage that is not a transitory signal and that
comprises instructions executable by the at least one processor to:
train at least a first sound effect (SFX) recommendation engine at
least in part by: inputting silent video frames and noisy SFX
labels to plural residual neural networks (Resnet); inputting an
output of the Resnet to at least one bi-directional gated recurrent
unit to render a vector; recommend at least one SFX for at least a
first video with no sound at least in part by: inputting an output
of the Resnet to at least one trained model also configured for
receiving as input at least a second video without sound to output
at least one SFX tag representing a recommended SFX for the second
video.
11. The apparatus of claim 10, wherein the instructions are
executable to combine the recommended SFX with the second
video.
12. The apparatus of claim 10, wherein the instructions are
executable to: input training data to a first noisy SFX model to
train the first noisy SFX model, the training data comprising audio
clips from one or more computer simulations and synthesized audio
clips.
13. The apparatus of claim 12, wherein the instructions are
executable to: input the training data to plural convolutional NN
(CNN) of the first noisy SFX model to render a first output; input
the first output to a classification mapper that renders a second
output comprising predictions of SFX for the first computer
simulation.
14. The apparatus of claim 13, wherein the first noisy SFX model
comprises: plural gated convolutional neural networks (CNN) at
least one of which is configured to receive the training data; at
least a first classifier (CLF) network configured to receive output
of the plural gated CNN; and at least a second CLF network
configured to receive output of the plural gated CNN.
15. The apparatus of claim 14, wherein the first CLF network is a
supervised 32-category network configured for receiving output from
the plural gated CNN comprised of data from both the audio clips
from one or more computer simulations and the synthesized audio
clips.
16. The apparatus of claim 15, wherein the second CLF network is a
semi-supervised fine-grained network configured for receiving
output from the plural gated CNN comprised of data from the
synthesized audio clips but not from the audio clips from one or
more computer simulations.
17. A method comprising: classifying first and second sound effects
in a first video or a first computer simulation; and based at least
in part on the classifying, providing sound effect predictions for
a second video or second computer simulation, wherein the
classifying comprises: inputting the first computer simulation
without sound to at least a first neural network (NN) trained to
learn correlations between visual features in video and sound
effect (SFX) tags; inputting to the first NN information from at
least a first noisy SFX model comprising ground truth
classifications of noisy SFX and/or predicted SFX tags.
18. The method of claim 17, wherein the providing is executed at
least in part by directly mapping sound effects to sound effect
tags.
19. The method of claim 17, wherein the providing is executed at
least in part by image recognition of objects, actions, and
captioning in the first video or first computer simulation.
20. (canceled)
Description
FIELD
[0001] The application relates generally to technically inventive,
non-routine solutions that are necessarily rooted in computer
technology and that produce concrete technical improvements.
BACKGROUND
[0002] Machine learning, sometimes referred to as deep learning,
can be used for a variety of useful applications related to data
understanding, detection, and/or classification. In computer
simulation industries such as gaming industries, video and audio
are two separate processes. Simulations are first designed and
produced without audio, and then audio groups investigate the
simulation videos and insert the corresponding sound effects (SFX)
from the SFX database, which is time-consuming.
SUMMARY
[0003] As understood herein, machine learning may be used to
address the technical problem noted above by providing SFX
recommendations that are relevant to computer simulation
scenes.
[0004] Accordingly, an apparatus includes at least one processor
and at least one computer storage that is not a transitory signal
and that includes instructions executable by the processor to
classify sound effects (SFX) to render classified SFX. The
instructions are executable to use at least one machine learning
engine to output at least a first of the classified SFX for at
least a first computer simulation at least in part based on learned
correlations between video attributes of the first computer
simulation and the classified SFX.
[0005] In example embodiments, the instructions may be executable
to recommend the first of the classified SFX for the first computer
simulation using direct mapping of elements in the first computer
simulation to a classification of the first of the classified SFX.
In such embodiments, the instructions can be executable to input
the first computer simulation without sound to at least a first
neural network (NN) trained to learn correlations between visual
features in video and SFX tags, and to input to the first NN
information from at least a first noisy SFX model comprising ground
truth classifications of noisy SFX. The instructions further may be
executable to input training data to the first noisy SFX model to
train the first noisy SFX model, with the training data including
audio clips from one or more computer simulations and synthesized
audio clips. The instructions can be further executable to input
the training data to plural convolutional NN (CNN) of the first
noisy SFX model to render a first output, and then input the first
output to a classification mapper that renders a second output
comprising predictions of SFX for the first computer
simulation.
[0006] In some implementations, the first noisy SFX model includes
plural gated convolutional neural networks (CNN). At least one
bidirectional recurrent neural network (RNN) may be configured to
receive output of the plural gated CNN. Also, plural
attention-based feed forward neural networks (FNN) can be
configured to receive output of the RNN.
[0007] In some examples, the first noisy SFX model can include
plural gated convolutional neural networks (CNN) at least one of
which is configured to receive the training data. At least a first
classifier (CLF) network can be configured to receive output of the
plural gated CNN, and at least a second CLF network can be
configured to receive output of the plural gated CNN. In such
embodiments, the first CLF network may be a supervised 32-category
network configured for receiving output from the plural gated CNN
including data from both the audio clips from one or more computer
simulations and the synthesized audio clips. The second CLF network
can be a supervised 182-category network configured for receiving
output from the plural gated CNN including data from the
synthesized audio clips but not from the audio clips from one or
more computer simulations.
[0008] In another aspect, an apparatus includes at least one
processor and at least one computer storage that is not a
transitory signal and that includes instructions executable by the
processor to train at least a first sound effect (SFX)
recommendation engine at least in part by inputting silent video
frames and noisy SFX labels to plural residual neural networks
(Resnet). The instructions are executable for inputting an output
of the Resnet to at least one bi-directional gated recurrent unit
to render a vector, and to recommend at least one SFX for at least
a first video with no sound at least in part by inputting an output
of the Resnet to at least one trained model also configured for
receiving as input at least a second video without sound to output
at least one SFX tag representing a recommended SFX for the second
video.
[0009] In another aspect, a method includes classifying first and
second sound effects in a first video or a first computer
simulation, and based at least in part on the classifying,
providing sound effect predictions for a second video or second
computer simulation.
[0010] The details of the present application, both as to its
structure and operation, can best be understood in reference to the
accompanying drawings, in which like reference numerals refer to
like parts, and in which:
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] FIG. 1 is a block diagram of an example system consistent
with present principles;
[0012] FIG. 2 is a flow chart of example overall logic for
recommending sound effects (SFX) for a video or computer simulation
consistent with present principles;
[0013] FIG. 3 is a block diagram illustrating the logic of FIG.
2;
[0014] FIG. 4 is a block diagram of a first approach for SFX
tagging involving direct mapping from video to SFX tags;
[0015] FIG. 5 is a block diagram of additional features consistent
with the first approach in FIG. 4;
[0016] FIGS. 6 and 7 are block diagrams of machine learning
architectures related to "noisy" coarse-grained (in the example
shown, 32-category) SFX classification consistent with the first
approach in FIG. 4;
[0017] FIG. 8 is a block diagram of a semi-supervised machine
learning architecture related to "noisy" fine grain SFX
classification consistent with the first approach in FIG. 4;
[0018] FIG. 9 is a block diagram of a machine learning architecture
related to training and testing phases consistent with the first
approach in FIG. 4;
[0019] FIG. 10 is a block diagram of features of a second approach
for video tagging involving indirect tagging by visual
understanding; and
[0020] FIGS. 11 and 12 are screen shots and related tables
illustrating correlating visual tags with matching SFX audio
tags.
DETAILED DESCRIPTION
[0021] In accordance with present principles, deep learning based
domain adaptation methods may be used to recommend SFX for videos
and computer simulations such as video games.
[0022] The methods described herein may concern multiple objects
and multiple actions associated with the multiple objects. For
example, an image text-block of many texts may be an "object", and
the type of the image block may be an "action".
[0023] This disclosure also relates generally to computer
ecosystems including aspects of consumer electronics (CE) device
networks such as but not limited to distributed computer game
networks, augmented reality (AR) networks, virtual reality (VR)
networks, video broadcasting, content delivery networks, virtual
machines, and artificial neural networks and machine learning
applications.
[0024] A system herein may include server and client components,
connected over a network such that data may be exchanged between
the client and server components. The client components may include
one or more computing devices including AR headsets, VR headsets,
game consoles such as Sony PlayStation.RTM. and related
motherboards, game controllers, portable televisions (e.g. smart
TVs, Internet-enabled TVs), portable computers such as laptops and
tablet computers, and other mobile devices including smart phones
and additional examples discussed below. These client devices may
operate with a variety of operating environments. For example, some
of the client computers may employ, as examples, Orbis or Linux
operating systems, operating systems from Microsoft, or a Unix
operating system, or operating systems produced by Apple, Inc. or
Google. These operating environments may be used to execute one or
more programs/applications, such as a browser made by Microsoft or
Google or Mozilla or other browser program that can access websites
hosted by the Internet servers discussed below. Also, an operating
environment according to present principles may be used to execute
one or more computer game programs/applications and other
programs/applications that undertake present principles.
[0025] Servers and/or gateways may include one or more processors
executing instructions that configure the servers to receive and
transmit data over a network such as the Internet. Additionally or
alternatively, a client and server can be connected over a local
intranet or a virtual private network. A server or controller may
be instantiated by a game console and/or one or more motherboards
thereof such as a Sony PlayStation.RTM., a personal computer,
etc.
[0026] Information may be exchanged over a network between the
clients and servers. To this end and for security, servers and/or
clients can include firewalls, load balancers, temporary storages,
and proxies, and other network infrastructure for reliability and
security. One or more servers may form an apparatus that implement
methods of providing a secure community such as an online social
website or video game website to network users to communicate
crowdsourced in accordance with present principles.
[0027] As used herein, instructions refer to computer-implemented
steps for processing information in the system. Instructions can be
implemented in software, firmware or hardware and include any type
of programmed step undertaken by components of the system.
[0028] A processor may be any conventional general-purpose single-
or multi-chip processor that can execute logic by means of various
lines such as address lines, data lines, and control lines and
registers and shift registers.
[0029] Software modules described by way of the flow charts and
user interfaces herein can include various sub-routines,
procedures, etc. Without limiting the disclosure, logic stated to
be executed by a particular module can be redistributed to other
software modules and/or combined together in a single module and/or
made available in a shareable library.
[0030] As indicated above, present principles described herein can
be implemented as hardware, software, firmware, or combinations
thereof; hence, illustrative components, blocks, modules, circuits,
and steps are set forth in terms of their functionality.
[0031] Further to what has been alluded to above, logical blocks,
modules, and circuits described below can be implemented or
performed with a general-purpose processor, a digital signal
processor (DSP), a field programmable gate array (FPGA) or other
programmable logic device such as an application specific
integrated circuit (ASIC), discrete gate or transistor logic,
discrete hardware components, or any combination thereof designed
to perform the functions described herein. A processor can be
implemented by a controller or state machine or a combination of
computing devices.
[0032] The functions and methods described below may be implemented
in hardware circuitry or software circuitry. When implemented in
software, the functions and methods can be written in an
appropriate language such as but not limited to Java, C# or C++,
and can be stored on or transmitted through a computer-readable
storage medium such as a random access memory (RAM), read-only
memory (ROM), electrically erasable programmable read-only memory
(EEPROM), compact disk read-only memory (CD-ROM) or other optical
disk storage such as digital versatile disc (DVD), magnetic disk
storage or other magnetic storage devices including removable thumb
drives, etc. A connection may establish a computer-readable medium.
Such connections can include, as examples, hard-wired cables
including fiber optics and coaxial wires and digital subscriber
line (DSL) and twisted pair wires. Such connections may include
wireless communication connections including infrared and
radio.
[0033] Components included in one embodiment can be used in other
embodiments in any appropriate combination. For example, any of the
various components described herein and/or depicted in the Figures
may be combined, interchanged or excluded from other
embodiments.
[0034] "A system having at least one of A, B, and C" (likewise "a
system having at least one of A, B, or C" and "a system having at
least one of A, B, C") includes systems that have A alone, B alone,
C alone, A and B together, A and C together, B and C together,
and/or A, B, and C together, etc.
[0035] Now specifically referring to FIG. 1, an example system 10
is shown, which may include one or more of the example devices
mentioned above and described further below in accordance with
present principles. The first of the example devices included in
the system 10 is a consumer electronics (CE) device such as an
audio video device (AVD) 12 such as but not limited to an
Internet-enabled TV with a TV tuner (equivalently, set top box
controlling a TV). However, the AVD 12 alternatively may be an
appliance or household item, e.g. computerized Internet enabled
refrigerator, washer, or dryer. The AVD 12 alternatively may also
be a computerized Internet enabled ("smart") telephone, a tablet
computer, a notebook computer, an augmented reality (AR) headset, a
virtual reality (VR) headset, Internet-enabled or "smart" glasses,
another type of wearable computerized device such as a computerized
Internet-enabled watch, a computerized Internet-enabled bracelet, a
computerized Internet-enabled music player, computerized
Internet-enabled head phones, a computerized Internet-enabled
implantable device such as an implantable skin device, other
computerized Internet-enabled devices, etc. Regardless, it is to be
understood that the AVD 12 is configured to undertake present
principles (e.g., communicate with other consumer electronics (CE)
devices to undertake present principles, execute the logic
described herein, and perform any other functions and/or operations
described herein).
[0036] Accordingly, to undertake such principles the AVD 12 can be
established by some or all of the components shown in FIG. 1. For
example, the AVD 12 can include one or more displays 14 that may be
implemented by a high definition or ultra-high definition "4K" or
higher flat screen and that may be touch-enabled for receiving user
input signals via touches on the display. The AVD 12 may include
one or more speakers 16 for outputting audio in accordance with
present principles, and at least one additional input device 18
such as an audio receiver/microphone for entering audible commands
to the AVD 12 to control the AVD 12. The example AVD 12 may also
include one or more network interfaces 20 for communication over at
least one network 22 such as the Internet, an WAN, an LAN, etc.
under control of one or more processors. Thus, the interface 20 may
be, without limitation, a Wi-Fi transceiver, which is an example of
a wireless computer network interface, such as but not limited to a
mesh network transceiver. Furthermore, note the network interface
20 may be, e.g., a wired or wireless modem or router, or other
appropriate interface such as, for example, a wireless telephony
transceiver, or Wi-Fi transceiver as mentioned above, etc.
[0037] It is to be understood that the one or more processors
control the AVD 12 to undertake present principles, including the
other elements of the AVD 12 described herein such as controlling
the display 14 to present images thereon and receiving input
therefrom. The one or more processors may include a central
processing unit (CPU) 24 as well as a graphics processing unit
(GPU) 25 on a graphics card 25A.
[0038] In addition to the foregoing, the AVD 12 may also include
one or more input ports 26 such as, e.g., a high definition
multimedia interface (HDMI) port or a USB port to physically
connect (e.g., using a wired connection) to another consumer
electronics (CE) device and/or a headphone port to connect
headphones to the AVD 12 for presentation of audio from the AVD 12
to a user through the headphones. For example, the input port 26
may be connected via wire or wirelessly to a cable or satellite
source 26a of audio video content. Thus, the source 26a may be,
e.g., a separate or integrated set top box, or a satellite
receiver. Or, the source 26a may be a game console or disk player
containing content that might be regarded by a user as a favorite
for channel assignation purposes. The source 26a when implemented
as a game console may include some or all of the components
described below in relation to the CE device 44 and may implement
some or all of the logic described herein.
[0039] The AVD 12 may further include one or more computer memories
28 such as disk-based or solid-state storage that are not
transitory signals, in some cases embodied in the chassis of the
AVD as standalone devices or as a personal video recording device
(PVR) or video disk player either internal or external to the
chassis of the AVD for playing back AV programs or as removable
memory media. Also in some embodiments, the AVD 12 can include a
position or location receiver such as but not limited to a
cellphone receiver, GPS receiver and/or altimeter 30 that is
configured to, e.g., receive geographic position information from
at least one satellite or cellphone tower and provide the
information to the processor 24 and/or determine an altitude at
which the AVD 12 is disposed in conjunction with the processor 24.
However, it is to be understood that that another suitable position
receiver other than a cellphone receiver, GPS receiver and/or
altimeter may be used in accordance with present principles to, for
example, determine the location of the AVD 12 in all three
dimensions.
[0040] Continuing the description of the AVD 12, in some
embodiments the AVD 12 may include one or more cameras 32 that may
be, e.g., a thermal imaging camera, a digital camera such as a
webcam, an infrared (IR) camera, and/or a camera integrated into
the AVD 12 and controllable by the processor 24 to generate
pictures/images and/or video in accordance with present principles.
Also included on the AVD 12 may be a Bluetooth transceiver 34 and
other Near Field Communication (NFC) element 36 for communication
with other devices using Bluetooth and/or NFC technology,
respectively. An example NFC element can be a radio frequency
identification (RFID) element.
[0041] Further still, the AVD 12 may include one or more auxiliary
sensors 37 (e.g., a motion sensor such as an accelerometer,
gyroscope, cyclometer, or a magnetic sensor, an infrared (IR)
sensor, an optical sensor, a speed and/or cadence sensor, a gesture
sensor (e.g., for sensing gesture command), etc.) providing input
to the processor 24. The AVD 12 may include an over-the-air TV
broadcast port 38 for receiving OTA TV broadcasts providing input
to the processor 24. In addition to the foregoing, it is noted that
the AVD 12 may also include an infrared (IR) transmitter and/or IR
receiver and/or IR transceiver 42 such as an IR data association
(IRDA) device. A battery (not shown) may be provided for powering
the AVD 12.
[0042] Still referring to FIG. 1, in addition to the AVD 12, the
system 10 may include one or more other consumer electronics (CE)
device types. In one example, a first CE device 44 may be used to
send computer game audio and video to the AVD 12 via commands sent
directly to the AVD 12 and/or through the below-described server
while a second CE device 46 may include similar components as the
first CE device 44. In the example shown, the second CE device 46
may be configured as an AR or VR headset worn by a user 47 as
shown. In the example shown, only two CE devices 44, 46 are shown,
it being understood that fewer or greater devices may also be used
in accordance with present principles.
[0043] In the example shown, all three devices 12, 44, 46 are
assumed to be members of a network such as a secured or encrypted
network, an entertainment network or Wi-Fi in, e.g., a home, or at
least to be present in proximity to each other in a certain
location and able to communicate with each other and with a server
as described herein. However, present principles are not limited to
a particular location or network unless explicitly claimed
otherwise.
[0044] The example non-limiting first CE device 44 may be
established by any one of the above-mentioned devices, for example,
a smart phone, a digital assistant, a portable wireless laptop
computer or notebook computer or game controller (also referred to
as "console"), and accordingly may have one or more of the
components described below. The second CE device 46 without
limitation may be established by an AR headset, a VR headset,
"smart" Internet-enabled glasses, or even a video disk player such
as a Blu-ray player, a game console, and the like. Still further,
in some embodiments the first CE device 44 may be a remote control
(RC) for, e.g., issuing AV play and pause commands to the AVD 12,
or it may be a more sophisticated device such as a tablet computer,
a game controller communicating via wired or wireless link with a
game console implemented by another one of the devices shown in
FIG. 1 and controlling video game presentation on the AVD 12, a
personal computer, a wireless telephone, etc.
[0045] Accordingly, the first CE device 44 may include one or more
displays 50 that may be touch-enabled for receiving user input
signals via touches on the display 50. Additionally or
alternatively, the display(s) 50 may be an at least partially
transparent display such as an AR headset display or a "smart"
glasses display or "heads up" display, as well as a VR headset
display, or other display configured for presenting AR and/or VR
images.
[0046] The first CE device 44 may also include one or more speakers
52 for outputting audio in accordance with present principles, and
at least one additional input device 54 such as, for example, an
audio receiver/microphone for entering audible commands to the
first CE device 44 to control the device 44. The example first CE
device 44 may further include one or more network interfaces 56 for
communication over the network 22 under control of one or more CE
device processors 58. Thus, the interface 56 may be, without
limitation, a Wi-Fi transceiver, which is an example of a wireless
computer network interface, including mesh network interfaces. It
is to be understood that the processor 58 controls the first CE
device 44 to undertake present principles, including the other
elements of the first CE device 44 described herein such as, e.g.,
controlling the display 50 to present images thereon and receiving
input therefrom. Furthermore, note that the network interface 56
may be, for example, a wired or wireless modem or router, or other
appropriate interface such as a wireless telephony transceiver, or
Wi-Fi transceiver as mentioned above, etc.
[0047] Still further, note that in addition to the processor(s) 58,
the first CE device 44 may also include a graphics processing unit
(GPU) 55 on a graphics card 55A. The graphics processing unit 55
may be configured for, among other things, presenting AR and/or VR
images on the display 50.
[0048] In addition to the foregoing, the first CE device 44 may
also include one or more input ports 60 such as, e.g., a HDMI port
or a USB port to physically connect (e.g., using a wired
connection) to another CE device and/or a headphone port to connect
headphones to the first CE device 44 for presentation of audio from
the first CE device 44 to a user through the headphones. The first
CE device 44 may further include one or more tangible computer
readable storage medium 62 such as disk-based or solid-state
storage. Also in some embodiments, the first CE device 44 can
include a position or location receiver such as but not limited to
a cellphone and/or GPS receiver and/or altimeter 64 that is
configured to, e.g., receive geographic position information from
at least one satellite and/or cell tower, using triangulation, and
provide the information to the CE device processor 58 and/or
determine an altitude at which the first CE device 44 is disposed
in conjunction with the CE device processor 58. However, it is to
be understood that that another suitable position receiver other
than a cellphone and/or GPS receiver and/or altimeter may be used
in accordance with present principles to, e.g., determine the
location of the first CE device 44 in all three dimensions.
[0049] Continuing the description of the first CE device 44, in
some embodiments the first CE device 44 may include one or more
cameras 66 that may be, e.g., a thermal imaging camera, an IR
camera, a digital camera such as a webcam, and/or another type of
camera integrated into the first CE device 44 and controllable by
the CE device processor 58 to generate pictures/images and/or video
in accordance with present principles. Also included on the first
CE device 44 may be a Bluetooth transceiver 68 and other Near Field
Communication (NFC) element 70 for communication with other devices
using Bluetooth and/or NFC technology, respectively. An example NFC
element can be a radio frequency identification (RFID) element.
[0050] Further still, the first CE device 44 may include one or
more auxiliary sensors 72 (e.g., a motion sensor such as an
accelerometer, gyroscope, cyclometer, or a magnetic sensor, an
infrared (IR) sensor, an optical sensor, a speed and/or cadence
sensor, a gesture sensor (e.g., for sensing gesture command), etc.)
providing input to the CE device processor 58. The first CE device
44 may include still other sensors such as, for example, one or
more climate sensors 74 (e.g., barometers, humidity sensors, wind
sensors, light sensors, temperature sensors, etc.) and/or one or
more biometric sensors 76 providing input to the CE device
processor 58. In addition to the foregoing, it is noted that in
some embodiments the first CE device 44 may also include an
infrared (IR) transmitter and/or IR receiver and/or IR transceiver
78 such as an IR data association (IRDA) device. A battery (not
shown) may be provided for powering the first CE device 44. The CE
device 44 may communicate with the AVD 12 through any of the
above-described communication modes and related components.
[0051] The second CE device 46 may include some or all of the
components shown for the CE device 44. Either one or both CE
devices may be powered by one or more batteries.
[0052] Now in reference to the afore-mentioned at least one server
80, it includes at least one server processor 82, at least one
tangible computer readable storage medium 84 such as disk-based or
solid-state storage. In an implementation, the medium 84 includes
one or more solid state storage drives (SSDs). The server also
includes at least one network interface 86 that allows for
communication with the other devices of FIG. 1 over the network 22,
and indeed may facilitate communication between servers and client
devices in accordance with present principles. Note that the
network interface 86 may be, e.g., a wired or wireless modem or
router, Wi-Fi transceiver, or other appropriate interface such as a
wireless telephony transceiver. The network interface 86 may be a
remote direct memory access (RDMA) interface that directly connects
the medium 84 to a network such as a so-called "fabric" without
passing through the server processor 82. The network may include an
Ethernet network and/or fiber channel network and/or InfiniBand
network. Typically, the server 80 includes multiple processors in
multiple computers referred to as "blades" that may be arranged in
a physical server "stack".
[0053] Accordingly, in some embodiments the server 80 may be an
Internet server or an entire "server farm", and may include and
perform "cloud" functions such that the devices of the system 10
may access a "cloud" environment via the server 80 in example
embodiments for, e.g., domain adaptation as disclosed herein.
Additionally, or alternatively, the server 80 may be implemented by
one or more game consoles or other computers in the same room as
the other devices shown in FIG. 1 or nearby.
[0054] FIGS. 2 and 3 illustrate overall principles. Commencing at
block 200 in FIG. 2, sound effects (SFX) are classified. In an
example, this classification may be executed on incoming digitized
sound effect signals 300 to render tags 302 (graphically shown in
FIG. 3) that describe in words the sound effects being classified
as set forth elsewhere herein.
[0055] Moving to block 202 in FIG. 2 and still cross-referencing
FIG. 3, the tags 302 are registered in a database 304. Then,
proceeding to block 204 in FIG. 2, the registered tags may be
combined with video without sound 306 to render video with sound
effect sound 308. Note that "sound effects" refer to non-verbal
audio that is part of computer simulations such as computer games
to mimic the sounds of gunfire, fire burning, people running,
people yelling exclamations, water, etc. As set forth further
below, deep learning/AI techniques are provided herein to assist in
sound content creation for computer simulations such as video
games.
[0056] As used herein, "clean SFX tagging" refers to classifying or
tagging clean audio samples (sound effects with a single source of
sound) used by game sound designers based on their categories and
subcategories, so that they can be registered in a database
automatically. This assists the game designers by making search and
retrieval during sound mixing more efficient. "Video tagging"
refers to recommending sound effects that are relevant to a game
scene automatically. This is done to assist game designers by
making the sound design process more efficient. Present principles
focus on techniques to achieve video tagging.
[0057] This disclosure divulges two techniques for video tagging.
FIGS. 4-16 describe a direct mapping approach in which a deep
learning engine is trained to learn a correlation between the
visual features of a game video and corresponding SFX (audio) tags
302. FIGS. 17-19 describe a visual understanding approach in two
steps, namely, providing a neural network (NN) to understand the
visual content of the game scene and generate visual tags, which
includes object tags, action tags, and captions, followed by
mapping the visual tags to audio tags using semantic text
similarity. Dictionary-based mapping may also be used based on
other knowledge bases.
[0058] Accordingly and now referring to FIG. 4, in a training phase
400 video such as computer simulations with SFX sounds 402 are used
to train a NN system to generate tags 404 for different SFX sources
to render SFX tags 406. Once the NN system is trained, it may be
used in a test phase 408 to receive video 410 such as computer
simulations without SFX sounds as input to a trained model 412
described further below to output SFX tags 414 that are combined
with the video 410 to render video 416 with SFX sound incorporated
therein.
[0059] Now referring to FIG. 5, a more detailed explanation of the
training phase from FIG. 4 may be seen. Silent video such as
computer game video 500 is input to a trained NN 502. A supervised
learning approach is used by the NN 502 for learning a direct
mapping between visual features of a video and corresponding sound
effects. To train this supervised model, sound annotations for the
game audio are required. As understood herein, the process is
complicated by the fact that game audio typically contains a
mixture of sounds (also referred to as noisy SFX), making it
difficult to obtain human annotations 504, especially if number of
sound categories is large. Hence, a deep learning model 506 is
trained to automatically tag a mixture of sounds (noisy SFX model)
to identify the categories of the constituent sounds.
[0060] Now referring to FIGS. 6 and 7, in an initial embodiment a
noisy SFX model is trained to tag a small number of categories (32
classes) using human annotations. An audio clip represented by the
spectrogram 600 is input to a segmentation mapping module 602 that
includes a series of convolutional NNs (CNNs) 604. Segmentation
masks 606 are output by the mapping module 602 and used for
classification mapping 608 that produces predictions 610 for tags
with corresponding probabilities. FIG. 7 relatedly shows a gated
convolutional recurrent NN (CRNN) 700 that receives SFX clips 702
as input and extracts spectral patterns at each time step,
providing output to a bidirectional RNN 704 such as a bidirectional
long short-term memory (LSTM). FIG. 7 indicates the types of CNNs
used in the network 700. The Bi-RNN 704 is coupled to an
attention-based localization module 706 that includes plural feed
forward NNs (FNN) operating as sigmoid and softmax FNN as shown to
produce predicted tags 708 as weighted averages.
[0061] Of importance to present principles is FIG. 8, illustrating
an advanced technique for noisy SFX tagging. To generate
finer-grained SFX tags (e.g., 182-class or 5000-class labels or
even more detailed) for better discrimination of different sound
effects in a noisy sample, a supervised model is trained using
actual SFX data 800 from computer simulations and synthesized noisy
SFX data 802 generated separately from any simulation solely for
purposes of training a gated CNN module 804. In other words,
present principles as reflected in FIG. 8 recognize that to train a
supervised model, training data is required that has finer-grained
(e.g., 182-class or 5000 class) ground truth tags, whereas only
coarser-grained (32-class) human annotated SFX labels for game
audio currently is available. Hence, FIG. 8 and following figures
illustrate a semi-supervised approach that generates fine-grained
audio tags from coarse-grained audio tags without additional human
annotations. Note that 32-class and 182-class are used as examples
of coarse and finer-grained tags.
[0062] The synthetic mixtures of sound samples represented at 802
are created and their categories recorded during mixing. In this
synthetic mixture, fine-grained SFX labels (referred to elsewhere
herein as Dataset1) are established. Block 800, on the other hand,
represents the available real game audio with coarse-grained labels
(generated by humans) referred to as Dataset2. As shown in FIG. 8,
Dataset1 of actual simulation or game data and Dataset2 of
synthesized data that is not from a simulation or game but is
created for purposes of supplementing game data are combined to
train an end-to-end semi-supervised model 804 that includes a
coarse classifier 806 and a fine-grained classifier 808 to generate
fine-grained tags 810 that identify the components of noisy game
audio. It is semi-supervised because no true fine-grained game
audio labels are present for training, as explained earlier. It is
a multi-tasking model because it is capable of generating both
coarse-grained audio tags 812 and fine-grained audio tags 810. In
other words, fine grain analysis uses more categories than coarse
grain analysis.
[0063] The training loss function for this model is a sum of the
loss for fine-grained tagging and coarse-grained tagging. The goal
of the training is to minimize the training loss. The training
stops when the model converges. At this point a model is attained
that can decompose a noisy audio mixture into its constituent
tags.
[0064] Accordingly, the above description divulges a technique to
identify the constituent sound effect categories of a game audio,
while FIG. 9 depicts how to use these tags (generated by human or
by the model in FIG. 8) to train a supervised video tagging model.
As shown, during training, videos 900 with sound extracted, along
with the noisy SFX tags 902 generated as described above and/or
human-annotated, are input to a training phase module 904. With
greater specificity, the corresponding audio that is extracted from
the video is passed through the noisy SFX model explained above in
FIG. 8 to generate the SFX tags or labels 902, which are input
along with the corresponding video segment 900 to the supervised
training phase model 904. In this way the video is synchronized
with the audio tags before training. In an example non-limiting
implementation, the frame rate used may be thirty frames per second
(30 fps) and video duration may be one second.
[0065] The training phase module 904 generates video embeddings
(numerical vectors) by passing the silent video frames through a
deep CNN 906 (e.g., a Resnet or similar network). For each frame,
one embedding (vector) is generated, which serves as the visual
feature for the video frame. Other visual features can also be
used. Because a video is a sequence of frames, a sequence of video
embeddings is produced, which are then input to a recurrent neural
network 908, in the example shown, a bidirectional gated recurrent
unit (GRU) or gated recurrent network that produces tag predictions
910.
[0066] The output of the training is a neural model 912 that can
receive new simulation video 914 without sound in a test phase and
generate sound tags 916 corresponding to the silent video 914.
These tags may be used to retrieve the corresponding sound effects
918 for combination with the video as shown at 920.
[0067] FIGS. 10-12 illustrate the visual understanding approach
alluded to above. In a first step, video 1000 such as a computer
simulation without sound (audio) is used to generate visual tags
1002 based on visual understanding of, for example, identified
objects 1004 in the video, identified actions 1006 in the video,
and identified scene descriptions 1008 in the video. Then a
semantic text similarity module 1010 receives the visual tags 1002
along with SFX tags 1012 from the database described above to
automatically map the visual tags to the specific audio categories
in the sound database to generate video 1014 with sound.
[0068] FIG. 11 illustrates further. A display 1100 is shown
presenting video with objects 1102 that are recognized using image
recognition techniques to generate corresponding visual tags 1104.
The visual tags 1104 may be embedded using word embedding or
sentence embedding, which results in a numerical vector. The video
tags 1104 are matched with corresponding audio tags 1106. Each
audio category or audio file name that identifies an audio sample
is embedded using word embedding or sentence embedding, which again
results in a numerical vector. FIG. 12 similarly shows a video on a
display 1200 with captions 1202 that can be matched using
unsupervised semantic text similarity models 1203 to audio tags
1204.
[0069] In any case, whether matching the audio tags to object tags,
caption tags, or action tags, two numerical vectors are produced,
one for the audio tag and one for the tag derived from the video.
The similarity of the tags is determined by computing the distance
between the two vectors. Any distance measure, such as cosine
similarity or Euclidean distance, can be used. The smaller the
distance, the more similar the tags are. Using this approach, each
visual tag is mapped to the top-k most similar audio tags.
[0070] Using this text similarity approach, each visual tag can be
mapped to different granularities of audio tags, ranging from
coarse grained (e.g., 32-class) tags that identify a group of audio
samples to very fine grained tags that identify an individual sound
sample.
[0071] The automatically generated audio tags from visual
understanding of game scenes can serve two purposes. First, the
audio tags can be used to recommend sound effects for game scenes
to the game designers. Second, the audio tags can also be used as
SFX labels for training the direct mapping video tagging model
divulged in FIGS. 4-16 as an alternative to the noisy SFX labels
derived from audio.
[0072] While direct mapping in FIGS. 4-9 may provide greater
accuracy in tagging than the visual understanding technique shown
in FIGS. 10-12, visual understanding renders finer grained tagging
using unsupervised text similarity and renders it relatively easy
to annotate objects and captions. Direct mapping is particularly
advantageous when accurate ground-truth SFX tags are available for
tagging or sound source separation is viable. Visual understanding
is particularly advantageous when obtaining fine-grained SFX
annotations is otherwise difficult, and it mimics the work flow of
a sound engineer.
[0073] Present principles may be used in deep learning-based
methods for image, video and audio data processing, among others.
As may be appreciated from the foregoing detailed description,
present principles thus improve the adaptation and training of
neural networks through the technological solutions described
herein.
[0074] It will be appreciated that whilst present principals have
been described with reference to some example embodiments, these
are not intended to be limiting, and that various alternative
arrangements may be used to implement the subject matter claimed
herein.
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