A motion estimation processor for MPEG2 video real time encoding at wide search range
Akira Ohtani, Yoshihisa Matsumoto, M. Gion, Hironori Yoshida, Takashi Araki, Akinori Ubukata, Masahiro Serizawa, Katsuji Aoki, A. Sota, A. Nagata, Kunitoshi Aono · 2002
We have developed a motion estimation processor, named COMET (COmpact Motion Estimation processor for real-Time MPEG2 encoding) for real-time MPEG2 encoding. COMET contains a full pel resolution estimation processor made up of 256 processing elements, a half pel resolution estimation processor made up of 8 processing elements and an SDRAM interface. This chip searches motion vectors through a full search method in a horizontal and vertical range of -16 pel to +15.5 pel. COMET is implemented by using 0.5 /spl mu/m-CMOS technology and contains 1.5 million transistors on an area of 12.9 mm/spl times/11.1 mm. COMET has a computation power of 42GOPS at 80 MHz and performs real-time motion vector estimation at a speed of 54 MHz for 720 /spl times/480 pel. An MPEG2 real-time encoding system with a high quality image for MP@ML can be realized using COMET.