my OpenCV color detection (red) program doesn't work. it detects all colors instead of red
my OpenCV color detection (red) program doesn't work. it detects all colors instead of red Question: import numpy as np import cv2 img=cv2.imread(‘image.jpg’) hsvFrame=cv2.cvtColor(img ,cv2.COLOR_BGR2HSV) #SET RANGE FOR RED #DEFINE MASk red_lower=np.array([0,0,204],np.uint8) red_upper=np.array([0,0,255],np.uint8) red_mask=cv2.inRange(hsvFrame,red_lower,red_upper) kernel=np.ones((5,5),"uint8") red_mask=cv2.dilate(red_mask,kernel) res_red=cv2.bitwise_and(img,img,mask=red_mask) #creating contour contours,hierarchy=cv2.findContours(red_mask,cv2.RETR_TREE,cv2.CHAIN_APPROX_SIMPLE) for pic,contour in enumerate(contours): area=cv2.contourArea(contour) if area>300: x,y,w,h=cv2.boundingRect(contour) imageFrame=cv2.rectangle(img,(x,y),(x+w,y+h),(0,0,255),2) cv2.putText(img,"red colour",(x,y), cv2.FONT_HERSHEY_SIMPLEX,1.0,(0,0,255)) cv2.imshow("detected red ",img) …