momentum_: hierarchy的解释现在和官方不太一样：For each i-th contour contours[i], the elements hierarchy[i][0] , hierarchy[i][1] , hierarchy[i][2] , and hierarchy[i][3] are set to 0-based indices in contours of the next and previous contours at the same hierarchical level, the first child contour and the parent contour, respectively. link: https://docs.opencv.org/3.4/d3/dc0/group__imgproc__shape.html#ga17ed9f5d79ae97bd4c7cf18403e1689a

m0_73850043: 必须得有清晰的图像吗，我都是模糊的图像怎么办呢

一个偶像: 点乘 和 矩阵乘，不一样的，博主你不懂不要乱写呀

m0_70854782: 可以问一下那个input–ship＝imag. ship怎么填吗？

Robotssssss: 叉乘公式写错了