以下是我编写的代码:执行此代码时出现以下错误- **
x,y,w,h = cv2.boundingRect(contours) 类型错误:预期 Ptr
我正在尝试使矩形超出我的轮廓
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from cv2 import cv2
import numpy as np
cam = cv2.VideoCapture(0)
kernel_open = np.ones((7,7), np.uint8)
kernel_close = np.ones((15,15), np.uint8)
while True:
ret, frame = cam.read()
frame = cv2.resize(frame, (340,220))
# Our image is in BGR format. We need to conver it into HSV
imgHSV = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)
# Now we'll apply masking to capture green colour
lower_lim = np.array([33, 80, 40])
upper_lim = np.array([102, 255, 255])
mask = cv2.inRange(imgHSV, lower_lim, upper_lim)
# As we are getting noises so we'll remove the noise by morphological transformation- Opening and Closing
mask_open = cv2.morphologyEx(mask, cv2.MORPH_OPEN, kernel_open)
mask_close = cv2.morphologyEx(mask_open, cv2.MORPH_CLOSE, kernel_close)
# Till now we have identified the colour of the image we want
# Now we'll make boundary or contours around our required colour image
contours, hierarchy = cv2.findContours(mask_close.copy(), cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_NONE)
cv2.drawContours(frame, contours, -1, (0,0,255), 3)
# Now we'll draw rectangles
for i in range(len(contours)):
x,y,w,h = cv2.boundingRect(contours)
cv2.rectangle(frame, (x,y), (x+w, y+h), (255,0,0), 3)
cv2.imshow('Original Image', frame)
cv2.imshow('Mask Closed Image', mask_close)
if cv2.waitKey(1) == 27:
break
cam.release()
cv2.destroyAllWindows()
最佳答案
将您的 mask_close 数组转换为无符号 8 位整数数组
cv2.findContours((mask_close.astype(np.uint8).copy(),cv2.RETR_TREE,cv2.CHAIN_APPROX_SIMPLE)
关于image - 类型错误:参数 'array' 的预期 Ptr<cv::UMat>,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/62992240/