申铉京等提出三维直方图重建和降维的Otsu阈值分割算法。通过重建三维直方图，减弱了噪声干扰，将三维直方图区域划分由八分法改为二分法，使得阈值搜索的空间维度从三维降低到一维。-Shin Hyun Beijing and proposed a three-dimensional histogram reconstruction and dimensionality reduction of the Otsu threshold segmentation algorithm. Weakened by the reconstruction of three-dimensional histogram of noise interference, three-dimensional histogram region divided by the eighth of France to the dichotomy, threshold search space dimension from three-dimensional reduced to one-dimensional.