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US 2011/0211633 A1Published application
Light change coding
OwnerFerran Valldosera, Hua Yang +1inventors
InventorsFerran Valldosera, Hua Yang, Alan Jay Stein
Life of this patent
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Abstract
An encoding methodology for a video encoder encodes target light change (TLC) frames in order to improve the quality of the resulting decoded video. Backward prediction is applied instead of forward prediction to the frames that are detected as TLC frames. Additionally, the last frame of the TLC activity is forced to use only intra-coding modes.
Claims11
A method of encoding a series of video frames comprising:
- detecting a light change pattern in the series beginning with an extreme light frame;
- buffering the series of frames;
- selecting an end light change frame in the series, the end light change frame having more information content than the extreme light frame;
- and
- encoding frames backward from the end of light change frame to the extreme light frame.
2 more elements
An apparatus adapted to generate or receive a signal comprising a series of encoded video frames;
- encoded by detecting a light change pattern in the series beginning with an extreme light frame;
- selecting an end light change frame in the series, the end light change frame having more information content than the extreme light frame;
- and encoding the frames backward from the end of light change frame to the extreme light frame.
A device capable of encoding video frames comprising:
- a pre-analysis module having a light change detection apparatus;
- an encoding module having a group of pictures (GOP) pattern decision sub-module which establishes a coding order and a display order for the frames belonging to the GOP such that, a backward prediction coding order is set for frames detected by the pre-analysis module as having a light change.
Dependencies are inferred from the claim text.