关键词: 图像分割, Snake 模型, 区域信息, 统计特征

Abstract:

In order to clarify the fuzzy boundary of intravascular ultrasound (IVUS) image , an image segmentation algorithm based on the Snake model of local statistical characteristic restriction is presented. In this algorithm , the prior knowledge of IVUS image is used to establish the statistical information of image characteristics , with which the expanding force is set up and the intemal balance force of the contour is proposed to construct a new Snake model. The newly constructed model is then adopted to segment the IVUS image. Experimental results show that the proposed Snake model is little dependent on the initial contour and is not sensitive to noise. Thus , the target image with fuzzy boundalγcan be accurately segmented.

Key words: image segmentation, Snake model, region information, statistical characteristic