Efficient use of keyframes in video compression

Details Efficient use of keyframes in video compression Efficient use of keyframes in video compression

2003-10-23

2008-09-16

Le, Brian Q (Department: 2624)

Image analysis

Image compression or coding

Predictive coding

C386S349000, C386S349000

Reexamination Certificate

active

07426306

ABSTRACT:
One embodiment disclosed relates to a method for encoding and decoding a video sequence in which a keyframe is used to bi-directionally predict frames in the sequence. The keyframe is coded independently of other frames in the sequence. Both a prior frame occurring before the keyframe and a subsequent frame occurring after the keyframe are predicted using data from the keyframe. Another embodiment disclosed relates to a method for allocating bits to a keyframe during video encoding. Effects of a plurality of keyframe bit allocations on quality of a predicted frame are measured. Said effects are used to determine a near optimal keyframe bit allocation.

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patent: WO 00/77735 (2000-12-01), None

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