Abstract

Info

Title:: Comparison of Dice similarity coefficient and Hausdorff distance in image segmentation

Author(s):: HE Yisong; JIANG Jialiang; YU Hang; FU Yuchuan; Department of Radiotherapy, West China Hospital, Sichuan University, Chengdu 610041, China

Keywords:: precision radiotherapy; segmentation of target area; contour similarity; Dice similarity coefficient; Hausdorff distance

Abstract:: Objective To compare the evaluation effects of Dice similarity coefficient and Hausdorff distance in image segmentation; analyze the relationships between two similarity coefficients; and design the corresponding contours for further discussion. Methods Dice similarity coefficient and Hausdorff distance were used to evaluate contour similarity. Moreover, 18 (9 pairs) virtual contours abstracted from clinical target areas were designed for calculating and comparing the two similarity coefficients, namely Dice similarity coefficient and Hausdorff distance. Results According to the comparison results, 3 different types of cases were summarized. (1) The image conformity was preferable; (2) the overall conformity of the images was good, but there was a small proportion of poor conformity; (3) the conformity of image contour was poor. Conclusion Using Dice similarity coefficient as the only criterion is imperfect, and Dice similarity coefficient should be combined with Hausdorff distance to reflect contour conformity to the greatest extent.