角度容差设置问题

[xushaolei123]

您好，想请教一下使用实例图片Src1.bmp测试时，当角度容差允许值非零时,就会出现程序崩溃的情况，崩溃的程序位于MathToolDlg.cpp 1064行

[DennisLiu1993]

可能是Windows造成的exception
試試這個解法
https://github.com/DennisLiu1993/Fastest_Image_Pattern_Matching/blob/main/README.md#special-note

[xushaolei123]

谢谢博主，已经解决了，在types.hpp大致1847行添加下面代码，确实是windows的原因
inline
RotatedRect::RotatedRect(const Point2f& _point1, const Point2f& _point2, const Point2f& _point3)
{
Point2f _center = 0.5f * (_point1 + _point3);
Vec2f vecs[2];
vecs[0] = Vec2f(_point1 - _point2);
vecs[1] = Vec2f(_point2 - _point3);
double x = std::max(norm(_point1), std::max(norm(_point2), norm(_point3)));
double a = std::min(norm(vecs[0]), norm(vecs[1]));
// check that given sides are perpendicular
// this is the line you need to modify
CV_Assert(std::fabs(vecs[0].ddot(vecs[1])) * a <= FLT_EPSILON * 9 * x * (norm(vecs[0]) * norm(vecs[1])));

// wd_i stores which vector (0,1) or (1,2) will make the width
// One of them will definitely have slope within -1 to 1
int wd_i = 0;
if (std::fabs(vecs[1][1]) < std::fabs(vecs[1][0])) wd_i = 1;
int ht_i = (wd_i + 1) % 2;

float _angle = std::atan(vecs[wd_i][1] / vecs[wd_i][0]) * 180.0f / (float)CV_PI;
float _width = (float)norm(vecs[wd_i]);
float _height = (float)norm(vecs[ht_i]);

center = _center;
size = Size2f(_width, _height);
angle = _angle;

}