Python OpenCV——函数 cv2.findContours 运行错误【in function ‘cv::pointSetBoundingRect‘】解决方案

╰+哭是因爲堅強的太久メ 2023-01-10 13:25 165阅读 0赞

# 问题描述 #

> cv2.error: OpenCV(4.5.1) C:\\Users\\appveyor\\AppData\\Local\\Temp\\1\\pip-req-build-r2ue8w6k\\opencv\\modules\\imgproc\\src\\shapedescr.cpp:874: error: (-215:Assertion failed) npoints >= 0 && (depth == CV\_32F || depth == CV\_32S) in function 'cv::pointSetBoundingRect'

> ValueError: not enough values to unpack (expected 3, got 2)

# 解决方案 #

In OpenCV 3.4:

image, contours, hierarchy=  cv2.findContours(image, mode, method[, contours[, hierarchy[, offset]]])

**修改为**

In OpenCV 4.0:

contours, hierarchy=  cv2.findContours(image, mode, method[, contours[, hierarchy[, offset]]])

# 参考文章  #

[error: (-215:Assertion failed) npoints >= 0 && (depth == CV\_32F || depth == CV\_32F || depth ==CV\_32S][error_ _-215_Assertion failed_ npoints _ 0 _ _depth _ CV_32F _ depth _ CV_32F _ depth _CV_32S]

[OpenCV Assertion failed: (-215:Assertion failed) npoints >= 0 && (depth == CV\_32F || depth == CV\_32S)][OpenCV Assertion failed_ _-215_Assertion failed_ npoints _ 0 _ _depth _ CV_32F _ depth _ CV_32S]

[error_ _-215_Assertion failed_ npoints _ 0 _ _depth _ CV_32F _ depth _ CV_32F _ depth _CV_32S]: https://blog.csdn.net/weixin_38632246/article/details/98872457
[OpenCV Assertion failed_ _-215_Assertion failed_ npoints _ 0 _ _depth _ CV_32F _ depth _ CV_32S]: https://stackoverflow.com/questions/54734538/opencv-assertion-failed-215assertion-failed-npoints-0-depth-cv-32