依据传统的OTSU算法，对它进行改进后的自适应阈值分割算法-OTSU algorithm based on the traditional, to improve it after the adaptive thresholding algorithm

大津算法的MATLAB代码，很好的代码值得做图像处理初学者参考-The Otsu algorithm MATLAB code, good code worth doing image processing beginners reference

A novel pixel gray stretch in wavelet domain and rapid image threshold segmentation algorithm is proposed in view of the case that there is no visible double peak histogram in uneven illumination image. Firstly ， it stretch the image gray a