Surround sound to immersive audio upmixing based on video scene analysis
One embodiment provides a method of audio upmixing comprising performing video scene analysis by segmenting visual objects from video frames of a video, and performing audio analysis by extracting audio signals from an audio corresponding to the video. The method further comprises determining whether any of the audio signals correspond to any of the visual objects, and estimating a video-based trajectory of a visual object if the visual object is in motion and transitions from on-screen to off-screen, or vice versa, during the video. The method further comprises positioning an audio trajectory of an audio signal from at least one speaker associated with the display to at least one other speaker associated with providing surround sound. The audio trajectory is automatically matched with the video. The audio signal is delivered to the at least one speaker and the at least one other speaker for audio reproduction during the presentation.
1. A method of audio upmixing, comprising:
performing video scene analysis by segmenting one or more visual objects from one or more video frames of a video;
performing audio analysis by extracting one or more audio signals from an audio corresponding to the video;
determining whether any of the audio signals correspond to any of the visual objects;
estimating a video-based trajectory of a visual object of the visual objects if the visual object is in motion and transitions from on-screen to off-screen, or vice versa, during the video; and
positioning an audio trajectory of an audio signal of the audio signals from at least one speaker associated with the display to at least one other speaker associated with providing surround sound, wherein the audio trajectory is automatically matched with the video, and the audio signal is delivered to the at least one speaker and the at least one other speaker for audio reproduction during presentation of the video.
2. The method of claim 1 , wherein each of the audio signals corresponds to either one of the visual objects or a non-visual object that is not visually present in the one or more video frames.
3. The method of claim 1 , wherein the positioning includes panning the audio trajectory of the audio signal between the at least one speaker and the at least one other speaker.
4. The method of claim 1 , wherein the visual trajectory correlates with the panning during the transitions if the audio signal corresponds to the visual object.
5. The method of claim 1 , wherein the extracting comprises:
for each of the audio signals:
classifying the audio signal as directional or diffuse; and
estimating a likelihood that the audio signal is assigned to a horizontal speaker channel or a height speaker channel based on the classifying.
6. The method of claim 1 , wherein the audio signals are extracted from the audio using one or more audio separation techniques.
7. The method of claim 1 , wherein the at least one other speaker comprises at least one of a surround sound speaker or a height speaker.
8. A system of audio upmixing, comprising:
at least one processor; and
a non-transitory processor-readable memory device storing instructions that when executed by the at least one processor causes the at least one processor to perform operations including:
performing video scene analysis by segmenting one or more visual objects from one or more video frames of a video;
performing audio analysis by extracting one or more audio signals from an audio corresponding to the video;
determining whether any of the audio signals correspond to any of the visual objects;
estimating a video-based trajectory of a visual object of the visual objects if the visual object is in motion and transitions from on-screen to off-screen, or vice versa, during the video; and
positioning an audio trajectory of an audio signal of the audio signals from at least one speaker associated with the display to at least one other speaker associated with providing surround sound, wherein the audio trajectory is automatically matched with the video, and the audio signal is delivered to the at least one speaker and the at least one other speaker for audio reproduction during presentation of the video.
9. The system of claim 8 , wherein each of the audio signals corresponds to either one of the visual objects or a non-visual object that is not visually present in the one or more video frames.
10. The system of claim 8 , wherein the positioning includes panning the audio trajectory of the audio signal between the at least one speaker and the at least one other speaker.
11. The system of claim 8 , wherein the visual trajectory correlates with the panning during the transitions if the audio signal corresponds to the visual object.
12. The system of claim 8 , wherein the extracting comprises:
for each of the audio signals:
classifying the audio signal as directional or diffuse; and
estimating a likelihood that the audio signal is assigned to a horizontal speaker channel or a height speaker channel based on the classifying.
13. The system of claim 8 , wherein the audio signals are extracted from the audio using one or more audio separation techniques.
14. The system of claim 8 , wherein the at least one other speaker comprises at least one of a surround sound speaker or a height speaker.
15. A non-transitory processor-readable medium that includes a program that when executed by a processor performs a method of audio upmixing, the method comprising:
performing video scene analysis by segmenting one or more visual objects from one or more video frames of a video;
performing audio analysis by extracting one or more audio signals from an audio corresponding to the video;
determining whether any of the audio signals correspond to any of the visual objects;
estimating a video-based trajectory of a visual object of the visual objects if the visual object is in motion and transitions from on-screen to off-screen, or vice versa, during the video; and
positioning an audio trajectory of an audio signal of the audio signals from at least one speaker associated with the display to at least one other speaker associated with providing surround sound, wherein the audio trajectory is automatically matched with the video, and the audio signal is delivered to the at least one speaker and the at least one other speaker for audio reproduction during presentation of the video.
16. The non-transitory processor-readable medium of claim 15 , wherein each of the audio signals corresponds to either one of the visual objects or a non-visual object that is not visually present in the one or more video frames.
17. The non-transitory processor-readable medium of claim 15 , wherein the positioning includes panning the audio trajectory of the audio signal between the at least one speaker and the at least one other speaker.
18. The non-transitory processor-readable medium of claim 15 , wherein the visual trajectory correlates with the panning during the transitions if the audio signal corresponds to the visual object.
19. The non-transitory processor-readable medium of claim 15 , wherein the extracting comprises:
for each of the audio signals:
classifying the audio signal as directional or diffuse; and
estimating a likelihood that the audio signal is assigned to a horizontal speaker channel or a height speaker channel based on the classifying.
20. The non-transitory processor-readable medium of claim 15 , wherein the at least one other speaker comprises at least one of a surround sound speaker or a height speaker.