基于运动显著图和光流矢量分析的目标分割算法

为提高运动目标分割算法对多种复杂场景的自适应能力和分割精度,提出一种基于运动显著图和光流矢量分析的目标分割算法。该算法首先基于运动显著图提取运动目标的大致区域,然后利用光流矢量获得运动目标和背景区域的运动边界,并结合点在多边形内部原理得到运动目标内部精确的像素点,最后以超像素为基本分割单元,通过引入置信度的概念实现最终像素一级的目标分割。通过与典型算法进行多场景实验对比,表明该算法能够有效实现多种复杂场景下的运动目标分割,并且较现有算法具有更高的分割精度。

Video object segmentation algorithm based on motion saliency map and optical flow vector analysis

In order to improve the adaptive ability and segmentation accuracy of video object segmentation algorithm in various complex scenes, an object segmentation algorithm based on motion saliency map and optical flow vector analysis is proposed in this paper. Firstly, the proposed algorithm extracts the rough target region based on motion saliency map. Then, the motion boundaries of the motion object and background region are determined based on the optical flow vector between pairs of subsequent frames. The above information is combined to acquire the accurate pixels inside the moving objects with the point in polygon principle from the computational geometry. Finally, to refine the spatial accuracy of object segmentation in the previous step, per frame superpixels are acquired with over segmenting method. And these superpixels are labeled as foreground or background based on confidence level and statistical model. The proposed algorithm was compared with typical algorithms in different scenes, and the results indicate that the proposed algorithm can effectively deal with the moving object segmentation on a variety of challenging scenes, and has higher segmentation accuracy than other existing algorithms.