Opencv基础使用2——拐角检测 | 轮廓检测_opencv 找到轮廓拐点

本博文接上一篇博文，继续进行部分 opencv Python 示例代码运行 效果测试

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环境搭建、所使用代码版本 —— 参考上一篇博文——Opencv基础使用1——分割 - 视频人像跟踪

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opencv-master 4.5.1 Python 示例代码运行测试——拐角检测 | 轮廓检测

• 本博文的测试是直接拉取 opencv-master4.5.1，然后在opencv/samples/python/tutorial_code/ 目录下对不同模块 py 文件进行测试

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TrackingMotion – corner detector tutorial 【拐角检测 – 顶点标识】

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运行代码一：

cd opencv/samples/python/tutorial_code/TrackingMotion/corner_subpixels

python cornerSubPix_Demo.py --input ../../../../data/pic3.png 

或者 

cd opencv/samples/python/tutorial_code/TrackingMotion/generic_corner_detector

python cornerDetector_Demo.py --input ../../../../data/building.jpg

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效果如下：

运行代码二：

cd opencv/samples/python/tutorial_code/TrackingMotion/good_features_to_track

python goodFeaturesToTrack_Demo.py --input ../../../../data/pic3.png
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效果如下：

运行代码三：

cd opencv/samples/python/tutorial_code/TrackingMotion/harris_detector

python cornerHarris_Demo.py --input ../../../../data/building.jpg
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效果如下：

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轮廓检测【形状描述】

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Draw polygonal contour + bonding rects + circles | 绘制多边形轮廓+边界矩形+圆

运行代码一：

cd opencv/samples/python/tutorial_code/ShapeDescriptors/bounding_rects_circles

python generalContours_demo1.py --input ../../../../data/stuff.jpg 

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运行效果：

运行代码二【Code for Creating Bounding rotated boxes and ellipses for contours 轮廓 tutorial】：

cd opencv/samples/python/tutorial_code/ShapeDescriptors/bounding_rotated_ellipses

python generalContours_demo2.py --input ../../../../data/stuff.jpg
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运行效果

运行代码三

cd opencv/samples/python/tutorial_code/ShapeDescriptors/find_contours

python findContours_demo.py --input ../../../../data/HappyFish.jpg 
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运行效果：

运行代码四：

cd opencv/samples/python/tutorial_code/ShapeDescriptors/hull

python hull_demo.py --input ../../../../data/stuff.jpg

或者

cd ../moments/

python moments_demo.py  --input ../../../../data/stuff.jpg

或者

cd ../point_polygon_test/

python pointPolygonTest_demo.py 

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运行效果：

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