正在发生的事情是，您在discretized_circle_contour.

What's happening is, you're drawing a filled circle with radius 2 (which looks like a dot, because the radius is very small) in each point in discretized_circle_contour.

如果我正确理解了您的问题，那么您真正想要的只是一个跨过半径1/10的弧形. 您已经有了[0，36]度的拱门点，只需将其绘制为多段线即可:

If I understand your question correctly, what you actually want is just an arch spanning 1/10th of the radius. You already have the points for the arch in [0, 36] degrees, just draw it as a polyline instead:

cv2.polylines(frame, [discretized_circle_contour], False, 1)