关键词: 双边滤波, 分水岭算法, 心脏图像, Otsu算法

Abstract: Because the cardiac, systolic and diastolic blood flow, CT cardiac images appear weak boundary, artifacts, the traditional watershed algorithm is easy to produce segmentation, therefore, the paper proposes a segmentation method of CT cardiac image based on Bilateral Filtering and the Watershed（BF-WS）. The bilateral filter algorithm is used to filter for cardiac image, and the images are reconstructed by morphology to eliminate the image noise and preserve the edge information, and then the labeling of CT cardiac images is extracted by improved Otsu algorithm, and CT cardiac image is segmented by watershed segmentation algorithm, cardiac image of clinical CT images is used to test the performance in the Matlab platform. The results show that the proposed has improved cardiac CT image segmentation accuracy, and is very close to the segmentation results of experts, can solve the over-segmentation problem of the traditional watershed algorithm, and can provide an important basis for clinical diagnosis.

Key words: bilateral filtering, watershed algorithm, cardiac image, Otsu algorithm