IMAP-VISION: An SIMD Processor with High-Speed On-chip Memory and Large Capacity External Memory

This paper tlescribes a single-board real-time vision system witli 256 SIMD processors and its performance. The newly developed LSI, IMAP-VISION, integrates 32 &bit; processors, 1 Irocessor on-chip memories and an external memory interface with 160 Ml)yte/s bandwidth on a single chip. With eight IMAP-VISION chips and eight 16 Mhit synclironous DRAMS as external memories, the system has peak performance of 10.24 GIPS i ~ s well as meinory capacity to hold four 256 x 256 &bit; images in IMAP-VISION on-chip memories, and 256 images in external memories. Data transfer between on-chip and external memories can be carried out asynchronously and concurrently wit11 computations to enable efficient use of external memories for memory intensive algoritlims. Performance for several algorithms such as labeling, liough transfornl, optical flow, and stereo matcliing is shown to 1)e inticli faster than tlie video rate.