Title :
A simplified method of motion vector estimation for VLSI implementation
Author :
Honma, Hideki ; Ohta, Mutsumi ; Nishitani, Takao
Author_Institution :
NEC Corp., Kanagawa, Japan
Abstract :
A motion vector estimation (ME) method for VLSI implementation, according to MPEG (ISO/DIS-11172) is presented. The algorithm is based on a block-matching method, and a two-step tree search is applied. Moreover, a simple 2-D finite impulse response (FIR) filter is used just before subsampling, in order to avoid nonapplicable vectors. The filter is realized by additions only, so implementation is very easy. The computation amount decreases to one-fortieth compared with full-search ME through using this algorithm. The efficiency of 2-D FIR filter is evaluated by simulation. This VLSI can estimate motion vectors for MPEG, CCITT H.261 and CCIR Rec.723 in real time
Keywords :
digital filters; image processing; motion estimation; real-time systems; trees (mathematics); video signals; 2D FIR filter; CCIR Rec.723; CCITT H.261; ISO/DIS-11172; MPEG; VLSI implementation; block-matching method; image processing; motion vector estimation; real time; two-step tree search; Computational modeling; Digital video broadcasting; Finite impulse response filter; Laboratories; Motion estimation; National electric code; Transform coding; Very large scale integration; Video compression; Video recording;
Conference_Titel :
Systems Engineering, 1992., IEEE International Conference on
Conference_Location :
Kobe
Print_ISBN :
0-7803-0734-8
DOI :
10.1109/ICSYSE.1992.236867
