问题描述:在处理图像轮廓时发生的“not enough values to unpack”错误,未知原因,经查询未果,并不是中文符号的误用问题,故来请教各位老哥
报错内容:
File "Lesson_Test.py", line 1260, in
image,contours,hierarchy=cv2.findContours(img_1_binary,cv2.RETR_TREE,cv2.CHAIN_APPROX_NONE)
ValueError: not enough values to unpack (expected 3, got 2)
代码:
import cv2
import numpy
img_1=cv2.imread("E:\\python\\python_file\\Test003.jpg",cv2.IMREAD_UNCHANGED)
img_1_gray=cv2.cvtColor(img_1,cv2.COLOR_BGR2GRAY)
r,img_1_binary=cv2.threshold(img_1_gray,127,255,cv2.THRESH_BINARY_INV)
# 错误提示在 ↓ 这行出的问题
image,contours,hierarchy=cv2.findContours(img_1_binary,cv2.RETR_TREE,cv2.CHAIN_APPROX_NONE)
# 错误提示在 ↑ 这行出的问题
img_1_copy=img_1.copy()
img_1_contour=cv2.drawContours(img_1,contours,-1,(255,0,0),1)
cv2.imshow("1",img_1)
cv2.imshow("result",img_1_binary)
cv2.waitKey()
cv2.destroyAllWindows()