Multiple Matrix Correlation (MMC) algorithm determines the location of the user by comparing the radio map of the area with the signal strengths received at the user device from all transmitters in the area. The Local Optimal Position (LOOP) al

对特定图片进行canny边缘检测。首先是高斯模糊，然后sobel算子处理，再局部极大值确定，最后阈值判断。(Canny edge detection for a particular picture. The first is the Gauss fuzzy, and then the Sobel operator is processed, and then the local maximum is determined, and finally the threshold is judged