关键词: 迭代图割, 平衡因子, 混合高斯, 深度直方图

Abstract: Based on the iterative graph cut method, this paper uses image pyramid to accelerate the speed of segmentation and introduces a balance factor to determine the significance between the color and depth information. This method can segment the depth image easily and precisely with the pyramid and the balance factor. The balance factor is the measure of the discrimination for the color and depth information. If the depth information is sufficient to distinguish the object from the background, then the depth information plays a more important role in the segmentation process, otherwise the color information takes more important role. By using the image pyramid our method can interact with the iterative graph cuts and greatly reduces the processing time without influencing the segmentation precision.

Key words: iterative graph cuts, balance factor, Gaussian mixture, depth histogram