给出了一种递归算法和一种小波变换与递归算法相结合的快速算法.该递推算法只需遍历二维直方图的主对角线和一条次主对角线, 与传统Otsu法的递推算法相比, 搜索空间大为减小。-arecursivealgorithmanda wavelet transfer combining withthe recursive algorithmare shown.The recursive algorithmonly needsearchthemain
diagonal andone sub
diagonal

If we know some properties of the image, than thresholding process only needs to ensure this property is satisfied. In a printed text image, if we know the ratio of area between the sheet and character, then we can choose satisfied threshold value

对二维最小误差法进行三维推广, 并结合三维直方图重建和降维思想提出了一种鲁棒的最小误差阈值分割算法.-For the three-dimensional extension of two-dimensional minimum error method, combined with three-dimensional histogram reconstruction and dimension reduction idea of minimum error thresholding a robu