Half pel motion estimation method for B pictures

Television – Bandwidth reduction system – Data rate reduction

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

348401, 348402, 348409, 348467, H04N 732

Patent

active

056508239

ABSTRACT:
Disclosed is a method of forming a bidirectionally coded picture, i.e., a B frame, from two reference pictures, e.g. I or P frame pictures. The method utilizes a single memory fetch of each reference picture, and interpolation of the estimated motion of each picture. This is accomplished by identifying a full pixel closest match from three full pixel boundary searches, calculating half pixel reference picture data therefrom, interpolating the half pixels to form bidirectionally coded pictures, and finding the closest match at the half pixel boundary. The intermediate results are stored in an 18.times.18.times.11 bit buffer holding a 7 bit partial sum for each pixel, said partial sum formed by adding the six most significant bits of corresponding I and P frame pixels. In this buffer four bits of each word in the buffer are the two Least Significant Bits of the corresponding I and P frame pixels.

REFERENCES:
patent: 4958226 (1990-09-01), Haskell et al.
patent: 5278647 (1994-01-01), Hingorani et al.
patent: 5311305 (1994-05-01), Mahadevan et al.
patent: 5311307 (1994-05-01), Yoshimoto
patent: 5321508 (1994-06-01), Veltman et al.
patent: 5351095 (1994-09-01), Kerdranvat
patent: 5379351 (1995-01-01), Fandrianto et al.
patent: 5386234 (1995-01-01), Veltman et al.
patent: 5414469 (1995-05-01), Gonzales et al.
patent: 5526054 (1996-06-01), Greenfield et al.
patent: 5528315 (1996-06-01), Sugiyama
patent: 5539466 (1996-07-01), Igarashi et al.
patent: 5539467 (1996-07-01), Song et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Half pel motion estimation method for B pictures does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Half pel motion estimation method for B pictures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Half pel motion estimation method for B pictures will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1562953

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.