With the fast development of the computer technology and information processing technology, the problem of information security is becoming more and more important. Information hiding is usually used to protect the important information from disclosi

Edge detection algorithms are important tools in image processing applications for carrying out much information and being relatively easy to produce. Sobel Canny and logarithmic algorithms [1] are among several edge detection algorithms used

sar图像去噪的几种新的方法，在matlab环境中自动识别连通区域的大小,一些自适应信号处理的算法。- Several new methods sar image denoising, Automatic identification in the matlab environment the size of the connected area, Some adaptive signal processing algorithms.