opencv实现的椭圆检测的代码，可以根据阀值检测椭圆-opencv code to achieve the ellipse detection

Hough检测直线,圆,椭圆的代码，用hough变换实现圆的检测，能完美检测出图像中的圆、直线和椭圆-Hough detection of straight line, circle, ellipse, code, hough transform circle detection can be perfect in the detected image of circles, lines and ellipses