CRISP-II: Coarse-grained reconfigurable image stream processor for image-processing and intelligent operations in QFHD video cameras

A 372.3 mW coarse-grained reconfigurable image stream processor, CRISP-II, for image-processing and intelligent operations is implemented in TSMC 90 nm low-power technology with a core size of 15.21 mm². With the proposed multi-stream mode unified protocol, hierarchical ring architecture, and adaptive computing engine, CRISP-II is able to solve the emerging scalability and flexibility problems. It could execute several advanced operations efficiently, like high-dynamic-imaging and face detection. Compared with other state-of-the-art processors, CRISP-II achieves 8.42 times power efficiency than the highly parallel SIMD processor, and meets the real-time requirement of video cameras with QFHD (3840 × 2160) resolution.