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A general purpose high‐speed digital image processing system with bus‐oriented architecture has been developed using a time‐shared multiframe data bus with the data transferring rate of 80 Mbytes/s. This system is equipped with special purpose hardware for executing frame‐to‐frame operation, 2‐D convolution, and 2‐D recursive filtering, allowing image processing of dynamic scenes can be performed in real time. The architecture and hardware of the developed system are presented, and the manufacture of special purpose hardware is described. Experimental results have demonstrated the ability to accomplish image processing of moving objects in real time, and 2‐D convolution and 2‐D recursive filtering at high speed.