我正在尝试检测OpenCV中是否有两个感兴趣区域(CvRect
)相交。 我可以显然手动输入需要检查的多个条件,但这并不是一个好方法(在我看来)。
有人能否建议我其他解决方案? 是否在OpenCV中有现成的方法可以实现?
我不知道是否有现成的解决方案来处理C接口(CvRect
),但如果你使用C++方式(cv::Rect
),你可以轻松地这样说:
interesect = r1 & r2;
关于矩形的完整操作列表如下:
// In addition to the class members, the following operations
// on rectangles are implemented:
// (shifting a rectangle by a certain offset)
// (expanding or shrinking a rectangle by a certain amount)
rect += point, rect -= point, rect += size, rect -= size (augmenting operations)
rect = rect1 & rect2 (rectangle intersection)
rect = rect1 | rect2 (minimum area rectangle containing rect2 and rect3 )
rect &= rect1, rect |= rect1 (and the corresponding augmenting operations)
rect == rect1, rect != rect1 (rectangle comparison)
bool cv::overlapRoi(Point tl1, Point tl2, Size sz1, Size sz2, Rect &roi)
{
int x_tl = max(tl1.x, tl2.x);
int y_tl = max(tl1.y, tl2.y);
int x_br = min(tl1.x + sz1.width, tl2.x + sz2.width);
int y_br = min(tl1.y + sz1.height, tl2.y + sz2.height);
if (x_tl < x_br && y_tl < y_br)
{
roi = Rect(x_tl, y_tl, x_br - x_tl, y_br - y_tl);
return true;
}
return false;
}
是的。在OpenCV中有一个现成的方法,位于opencv/modules/stitching/src/util.cpp中。
Rect r = myCvRect;
这个难吗? - Samerror: invalid use of member (did you forget the ‘&’ ?)
,明明我已经使用了&。 - achow