关键词: 图像分割, Otsu法, 类间方差, 黄金分割法, 多尺度, 灰度差分直方图

Abstract: For the image segmentation algorithms to satisfy the requirement of real-time, this paper extends the between-cluster variance in continuous domain considering the vast computation of Otsu method. The golden section method is derived. This paper proposes the segmentation algorithm based on multi-scale gray difference histogram. The algorithm analyzes the multi-scale gray difference histogram and gets the candidate sets. Combination of the two methods then a fast image segmentation algorithm can be achieved. Simulation results and practical applications show that this algorithm is very well in improving the speed, and good segmentation results can be received.

Key words: image segmentation, Otsu method, between-cluster variance, golden section method, multi-scale, gray difference histogram