Apparatus and method for video-audio processing, and program for separating an object sound corresponding to a selected video object
The present technique relates to an apparatus and a method for video-audio processing, and a program each of which enables a desired object sound to be more simply and accurately separated. A video-audio processing apparatus includes a display control portion configured to cause a video object based on a video signal to be displayed; an object selecting portion configured to select the predetermined video object from the one video object or among a plurality of the video objects; and an extraction portion configured to extract an audio signal of the video object selected by the object selecting portion as an audio object signal.
1. A video-audio processing apparatus, comprising:
processing circuitry and a memory containing instructions that, when executed by the processing circuitry, are configured to:
cause one or more video objects, based on a video signal, to be displayed in an image;
select a video object from the one or more video objects; and
extract an audio object signal of the selected video object from an audio signal,
wherein a signal other than the audio object signal of the selected video object is extracted as a background sound signal from the audio signal,
wherein the audio object signal and the background sound signal are encoded independently of each other, and
wherein the audio object signal and the background sound signal are multiplexed to produce the audio signal.
2. The video-audio processing apparatus according to claim 1 , wherein the instructions are configured to
produce object position information indicating the position, in a space, of the selected video object, and
extract the audio object signal based on the object position information.
3. The video-audio processing apparatus according to claim 2 , wherein the instructions are configured to
extract the audio object signal through sound source separation using the object position information.
4. The video-audio processing apparatus according to claim 3 , wherein the instructions are configured to
carry out fixed beam forming as the sound source separation.
5. The video-audio processing apparatus according to claim 1 , wherein the instructions are further configured to recognize the video object based on the video signal, and
to cause an image based on a recognition result of the video object to be displayed together with the video object.
6. The video-audio processing apparatus according to claim 5 , wherein the instructions are configured to
recognize the video object from face recognition.
7. The video-audio processing apparatus according to claim 5 , wherein the instructions are configured to
cause a frame to be displayed as the image in an area of the video object.
8. The video-audio processing apparatus according to claim 1 , wherein the instructions are configured to
produce metadata of the selected video object.
9. The video-audio processing apparatus according to claim 8 , wherein the instructions are configured to
produce object position information indicating the position, in a space, of the selected video object as the metadata.
10. The video-audio processing apparatus according to claim 8 , wherein the instructions are configured to
produce processing priority of the selected video object as the metadata.
11. The video-audio processing apparatus according to claim 8 , wherein the instructions are configured to
produce spread information indicating a spread state of an area of the selected video object as the metadata.
12. The video-audio processing apparatus according to claim 8 , wherein the instructions are further configured to encode the audio object signal and the metadata.
13. The video-audio processing apparatus according to claim 12 , wherein the instructions are further configured to:
encode the video signal; and
multiplex a video bit stream obtained by encoding the video signal, and an audio bit stream obtained by encoding the audio object signal and the metadata.
14. The video-audio processing apparatus according to claim 1 , further comprising an image pickup device configured to obtain the video signal by carrying out photographing.
15. The video-audio processing apparatus according to claim 1 , further comprising a sound acquisition device configured to obtain the audio signal by carrying out sound acquisition.
16. A video-audio processing method, comprising:
causing one or more video objects, based on a video signal, to be displayed in an image;
selecting a video object from the one or more video objects; and
extracting an audio object signal of the selected video object from an audio signal,
wherein a signal other than the audio object signal of the selected video object is extracted as a background sound signal from the audio signal,
wherein the audio object signal and the background sound signal are encoded independently of each other; and
wherein the audio object signal and the background sound signal are multiplexed to produce the audio signal.
17. A non-transitory computer readable medium containing instructions that, when executed by a processing device, perform a video-audio processing method comprising:
causing one or more video objects, based on a video signal, to be displayed in an image;
selecting a video object from the one or more video objects; and
extracting an audio object signal of the selected video object from an audio signal,
wherein a signal other than the audio object signal of the selected video object is extracted as a background sound signal from the audio signal,
wherein the audio object signal and the background sound signal are encoded independently of each other, and
wherein the audio object signal and the background sound signal are multiplexed to produce the audio signal.