任何人都知道如何在这张照片中裁剪出一种特征：https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcTg9-xXE-xzqKmQoVCi3b3AkeDCrA0k56d1xm8ohoddenz8lXuqYw，我有分数：
tri = delaunay (data2 (:, 1), data2 (:, 2));
imshow (I9) hold ('on');
scatter (data2 (:, 1), data2 (:, 2), 'SizeData', 10, 'MarkerFaceColor', 'w');
r9 = triplot (tri, data2 (:, 1), data2 (:, 2), 'w');
感谢