ubuntu22.04@laptop OpenCV Get Started: 006_annotating_images 1. 源由2. line/circle/rectangle/ellipse/text 应用Demo3 image_annotation3.1 C++应用Demo3.2 Python应用Demo3.3 重点过程分析3.3.1 划线3.3.2 画圆3.3.3 矩形3.3.4