Flexible and High Performance ASIPs for Pixel Level Image Processing and Two Dimensional Image Processing

概要

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An image processing engine is an important component in generating high quality images in video systems. Processing during capture and display are non-standard and vary from case by case, hence, the flexibility of image processing engines has turned out to be an important issue. The conventional hardware type of image processing engine such as an Application Specific Integrated Circuit (ASIC) is not applicable for this case. In order to increase design reusability and ease time-to-market pressures, Application Specific Instruction-set Processors (ASIP) which provide high flexibility and high computational efficiency have emerged as a promising solution. In this paper, we present two ASIPs. PXL ASIP, which has a reconfigurable multi bank memory module and an SIMD type computation pipeline, is designed for pixel level image processing, while 2D ASIP, which has slide register module and reconfigurable ALU modules, is designed for 2D image processing. PXL ASIP can perform 4 to 10 times faster compared to its base processor, and 2D ASIP can perform 5 to 43 times faster compared to its base processor.