Scalable Architecture for HighResolution Realtime Optical Flow Processor This paper describes a scalable architecture for highresolution realtime optical flow processor and the design for 60fps realtime FullHD system. A previously proposed 30fps WXGA realtime processor is redesigned as an IP (WXGAIP) for the proposed FullHD processor, which adopts a scalable multiprocessor structure. In addition, three methods are newly proposed, namely an improved hierarchical method, an improved initial value creation method, which reduces the number of iterative computations, and an adaptive acceleration parameter selection method that uses the builtin CPU. The realtime processing of 60fps FullHD video, which requires four times the processing power of WXGA video, is realized using twice the hardware while maintaining flow detection accuracy at a similar operating frequency compared to those of WXGAIP.

A Coprocessor for Realtime Motion Estimation in HD Video Coding This paper presents a motion estimation coprocessor, supporting realtime high definition (HD) video coding. The proposed coprocessor employs a 2D datareusing processing element array and a multistandard cost comparator for distortion computation of variable size block. An instructionset suitable for performing various ME algorithms is developed, providing the flexibility needed for different coding standards and various applications. In 0.13 xcexbcm CMOS technology, the coprocessor is implemented with 303K gates at operating frequency of 550MHz. A performance comparison to the reference architectures reveals that only the proposed processor can provide the processing capacity for 1920 xc3x97 1080, 60 fps video sequences at 33xc3x9733 search window.