Intra-macroblock DC and AC coefficient prediction for interlaced

Details Intra-macroblock DC and AC coefficient prediction for interlaced Intra-macroblock DC and AC coefficient prediction for interlaced

1997-10-24

1999-10-26

Tadayon, Bijan

Image analysis

Image compression or coding

Interframe coding

382248, G06K 9006

Patent

active

059741848

ABSTRACT:
DC and AC DCT transform coefficients of an INTRA coded block are differentially encoded by selecting predictor DC and AC coefficients from a left-hand neighboring block and a top neighboring block. Each block is coded according to a frame mode, a reordered field mode, and a non-reordered field mode. The AC predictor block is selected according to the respective coding modes of the blocks, and the block in which a DC predictor resides. The top block is selected as an AC predictor when the top block and current block are both reordered field mode, or both frame mode and/or non-reordered field mode, and the DC predictor resides in the top block. Zeroed AC spatial transform coefficients are used in place of the AC spatial transform coefficients from the selected block when the selected block is not INTRA coded, or does not reside in the same Video Object Plane (VOP) as the current block. DC coefficients may be non-linearly quantized.

REFERENCES:
patent: 5608888 (1997-03-01), Purcell et al.
patent: 5647048 (1997-07-01), Ting et al.
patent: 5668609 (1997-09-01), Dunbar et al.
patent: 5727088 (1998-03-01), Kim
patent: 5802210 (1998-09-01), Kurata et al.
patent: 5805762 (1998-09-01), Boyce et al.
patent: 5815646 (1998-09-01), Purcell et al.
patent: 5822003 (1998-10-01), Girod et al.

Affiliated with

Also associated with

Rating

Intra-macroblock DC and AC coefficient prediction for interlaced does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Intra-macroblock DC and AC coefficient prediction for interlaced, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intra-macroblock DC and AC coefficient prediction for interlaced will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-772936