Adaptive post-processing for mobile video calling system
A system may include a receiver, a decoder, a post-processor, and a controller. The receiver may receive encoded video data. The decoder may decode the encoded video data. The post-processor may perform post-processing on frames of decoded video sequence from the decoder. The controller may adjust post-processing of a current frame, based upon at least one condition parameters detected at the system.
1. A system comprising:
a receiver receiving encoded video data;
a decoder decoding the encoded video data;
a post-processor post-processing on frames of decoded video sequence from the decoder; and
a controller adjusting operation of a post-processor for a current frame based upon at least an estimate of a viewing distance representing a distance from a display that renders post-processed frames to a viewer that observes the rendered post-processed frames.
2. The system of claim 1 , wherein the receiver separates encoded video data from ancillary data streams.
3. The system of claim 1 , wherein the post-processing by the post-processor comprises at least one of applying deblocking filters, applying edge detection filters, and applying ringing filters.
4. The system of claim 1 , wherein the post-processing by the post-processor comprises a transform of a square pixel region based upon a coefficient threshold.
5. The system of claim 4 , wherein a post-processing filter coefficient is adjusted by the controller based upon the estimate of a viewing distance.
6. The system of claim 1 , wherein the controller estimates the estimated viewing distance from an analysis of content of the decoded video sequence.
7. The system of claim 1 , wherein the controller estimates the estimated viewing distance from position sensor data provided at the system.
8. The system of claim 1 , wherein the controller adjusts operation of the post-processor also based on a screen size of the display.
9. The system of claim 1 , wherein the controller adjusts operation of the post-processor also based on a screen resolution of the display.
10. The system of claim 1 , wherein the controller adjusts operation of the post-processor also based on a screen brightness of the display.
11. The system of claim 1 , wherein the controller adjusts operation of the post-processor also based on an ambient light brightness in an environment where the display is located.
12. A method comprising:
receiving, by a receiver, encoded video data;
decoding, by a decoder, the encoded video data;
post-processing, by a post-processor, on frames of decoded video sequence from the decoder; and
adjusting, by a controller, post-processing of a current frame, based upon at least an estimate of a viewing distance representing a distance from a display that renders post-processed frames to a viewer that observes the rendered post-processed frames.
13. The method of claim 12 , wherein the receiver separates encoded video data from ancillary data streams.
14. The method of claim 12 , wherein the post-processing by the post-processor comprises at least one of applying deblocking filters, applying edge detection filters, and applying ringing filters.
15. The method of claim 12 , wherein the post-processing by the post-processor comprises a transform of a square pixel region based upon a coefficient threshold.
16. The method of claim 12 , wherein a post-processing filter coefficient is adjusted by the controller based upon the estimated viewing distance.
17. The method of claim 12 , wherein the estimated viewing distance is estimated from an analysis of content of the decoded video sequence.
18. The method of claim 12 , wherein the estimated viewing distance is estimated from position sensor data provided at the system.
19. The method of claim 12 , wherein the controller adjusts operation of the post-processor also based on a screen size of the display.
20. The method of claim 12 , wherein the controller adjusts operation of the post-processor also based on a screen resolution of the display.
21. The method of claim 12 , wherein the controller adjusts operation of the post-processor also based on a screen brightness of the display.
22. The method of claim 12 , wherein the controller adjusts operation of the post-processor also based on an ambient light brightness in an environment where the display is located.
23. A non-transitory computer readable medium, storing instruction codes, executable by a processor in a system to perform:
receiving, by the processor, encoded video data;
decoding, by the processor, the encoded video data;
post-processing, by the processor, on frames of decoded video sequence from the decoder; and
adjusting, by the processor, post-processing of a current frame, based upon at least an estimate of a viewing distance representing a distance from a display that renders post-processed frames to a viewer that observes the rendered post-processed frames.
24. The non-transitory computer readable medium of claim 23 , wherein the post-processing comprises at least one of applying deblocking filters, applying edge detection filters, and applying ringing filters.
25. The non-transitory computer readable medium of claim 23 , wherein the post-processing comprises a transform of a square pixel region based upon a coefficient threshold.
26. The non-transitory computer readable medium of claim 23 , wherein a post-processing filter coefficient is adjusted based upon the estimated viewing distance.
27. The medium of claim 23 , wherein the estimated viewing distance is estimated from an analysis of content of the decoded video sequence.
28. The medium of claim 23 , wherein the estimated viewing distance is estimated from position sensor data provided at the system.
29. The medium of claim 23 , wherein adjusting comprises adjusting operation of the post-processing also based on a screen size of the display.
30. The medium of claim 23 , wherein adjusting comprises adjusting operation of the post-processing also based on a screen resolution of the display.
31. The medium of claim 23 , wherein adjusting comprises adjusting operation of the post-processing also based on a screen brightness of the display.
32. The medium of claim 23 , wherein adjusting comprises adjusting operation of the post-processing also based on an ambient light brightness in an environment where the display is located.
33. A system comprising:
a receiver receiving encoded video data;
a decoder decoding the encoded video data;
a post-processor post-processing on frames of decoded video sequence from the decoder; comprising a transform of a square pixel region based upon a coefficient threshold, and
a controller adjusting post-processing of a current frame, based upon at least one condition parameters detected at the system.
34. A method comprising:
receiving, by a receiver, encoded video data;
decoding, by a decoder, the encoded video data;
post-processing, by a post-processor, on frames of decoded video sequence from the decoder, comprising transforming a square pixel region based upon a coefficient threshold; and
adjusting, by a controller, post-processing of a current frame, based upon at least one condition parameters detected at a system.
35. A non-transitory computer readable medium, storing instruction codes, executable by a processor in a system to perform:
receiving, by the processor, encoded video data;
decoding, by the processor, the encoded video data;
post-processing, by the processor, on frames of decoded video sequence from the decoder, comprising transforming a square pixel region based upon a coefficient threshold; and
adjusting, by a controller, post-processing of a current frame, based upon at least one condition parameters detected at the system.