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IEICE TRANSACTIONS on Electronics

VLSI Architecture Study of a Real-Time Scalable Optical Flow Processor for Video Segmentation

Noriyuki MINEGISHI, Junichi MIYAKOSHI, Yuki KURODA, Tadayoshi KATAGIRI, Yuki FUKUYAMA, Ryo YAMAMOTO, Masayuki MIYAMA, Kousuke IMAMURA, Hideo HASHIMOTO, Masahiko YOSHIMOTO

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Summary :

An optical flow processor architecture is proposed. It offers accuracy and image-size scalability for video segmentation extraction. The Hierarchical Optical flow Estimation (HOE) algorithm [1] is optimized to provide an appropriate bit-length and iteration number to realize VLSI. The proposed processor architecture provides the following features. First, an algorithm-oriented data-path is introduced to execute all necessary processes of optical flow derivation allowing hardware cost minimization. The data-path is designed using 4-SIMD architecture, which enables high-throughput operation. Thereby, it achieves real-time optical flow derivation with 100% pixel density. Second, it has scalable architecture for higher accuracy and higher resolution. A third feature is the CMOS-process compatible on-chip 2-port DRAM for die-area reduction. The proposed processor has performance for CIF 30 fr/s with 189 MHz clock frequency. Its estimated core size is 6.025.33 mm2 with six-metal 90-nm CMOS technology.

Publication
IEICE TRANSACTIONS on Electronics Vol.E89-C No.3 pp.230-242
Publication Date
2006/03/01
Publicized
Online ISSN
1745-1353
DOI
10.1093/ietele/e89-c.3.230
Type of Manuscript
Special Section PAPER (Special Section on VLSI Design Technology in the Sub-100 nm Era)
Category
System LSIs and Microprocessors

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