The paper studied the principles of image matching algorithms and analyzed the different matching algorithms. By the principle of grayscale features encoding
the improved matching algorithm is presented and is realized by FPGA. The improved mid-value filter and matching algorithm based on grayscale features encoding is realized in the experiments. The matching effect is tested for visual image and infrared image under different background conditions. The experiment results show that the matching algorithm is easy for FPGA design and can enhance the real time performance.
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references
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