关键词: 区域生长, 区域竞争, 置信区间, CT序列图像分割

Abstract: In order to improve the accuracy of segmentation of region growing and reduce the number of user interaction，a segmentation algorithm of region growing based on confidence interval and region competition is presented.Region growing method focuses on local variations of an image while confidence interval and region competition can extract a global property of an image.This approach combines both advantages.And the segmentation from image-sequences of complex background can be achieved by selecting some seeds from object and background in an image of image-sequences.The experimental results with a serial of abdominal CT images show that the proposed algorithm can improve the accuracy of segmentation effectively with only very little interaction．

Key words: region growing, region competition, confidence interval, CT image-sequences segmentation