Title :
A half-pel precision motion estimation processor for NTSC-resolution video
Author :
Uramoto, Shin-ichi ; Takabatake, Akihiko ; Suzuki, Mitsuyoshi ; Sakurai, Hiroki ; Yoshimoto, Masahiko
Author_Institution :
Mitsubishi Electric Corp., Hyogo, Japan
Abstract :
A motion estimation processor compatible with CCITT H.261 and MPEG (Moving Pictures Experts Group) standards is described. A half-pel precision processing unit with an exhaustive block matching unit for integer-pel precision search is introduced. The necessary processing power for the exhaustive block matching is implemented with a one-dimensional array structure using a subsampling technique. The problem of communication bandwidth to the frame memory, which is a bottleneck of half-pel precision motion estimation, is solved by introducing a candidate pixel buffer in the interprocessor data transfer. It is noted that this is the first single-chip solution proposed that is capable of processing NTSC-resolution video in real time in 40-MHz operation
Keywords :
motion estimation; 40 MHz; CCITT standards; MPEG standards; NTSC-resolution video; VLSI; communication bandwidth; exhaustive block matching unit; frame memory; half-pel precision motion estimation processor; integer-pel precision search; interprocessor data transfer; one-dimensional array structure; pixel buffer; single-chip solution; subsampling; Bandwidth; Circuits; Communication equipment; Laboratories; Large scale integration; MPEG standards; Motion estimation; Power dissipation; Predictive coding; Video compression;
Conference_Titel :
Custom Integrated Circuits Conference, 1993., Proceedings of the IEEE 1993
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0826-3
DOI :
10.1109/CICC.1993.590693
