图像在传输过程中，传递函数对高频成分有衰减作用，造成图像模糊，细节轮廓不清楚。图像锐化就是补偿图像的轮廓，增强图像的边缘及灰度跳变的部分，使图像变得清晰。亦分空域处理和频域处理两类[3]。-Image in the transmission process, the transfer function of the role of high frequency components are attenuated, resulting in image blurring, the details

基于MATLAB的行列图像加密解密，功能主要是将清晰图像进行加密使图像变混沌，将图像解密使图像变清晰-MATLAB based on the ranks of the image encryption decryption, the main function is to clear the image becomes chaotic image encryption, decryption will make the image clearer image