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For the adaptive problems of ship type in the fuzzy self-tuning PID course control algorithm. According to the ideal range of damping factor in the second-order system's step function response. Adopt weighted comprehensive evaluation method of course control performance. The appropriate damping factor is used to optimization course control by MATLAB simulation experiment method. The optimal PID initial...
Image segmentation is still a crucial problem in image processing. In this paper, we proposed a novel multi-level image segmentation method based on PSNR using artificial bee colony algorithm (ABCA). PSNR is considered as an objective function of ABCA. The best multi-level thresholds are those which can make the PSNR maximize. Further, we compare entropy and PSNR in segmenting gray-level images and...
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