Design of vision sensor based on the technology of DSP and FPGA hierarchical image processing

Both FPGA and DSP can be used for image processing.However,most DSP-dominate image processing systems just use FPGA as a micro controller and a lot of hardware recourses have been wasted.Considering that DSP and FPGA have their own features while processing images,a sort of hierarchical image processing technology based on both DSP and FPGA has been proposed.The principle of the system will be explained in details.Further more,the structure and its separate module of the FPGA program which is used for the image edge detection will be briefly explained.At the same time,a method used to test the data flow has been proposed.