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identify color sequence with OpenCV
res = []
for cnt in contours:
if cv2.contourArea(cnt) > 100:
x,y,w,h = cv2.boundingRect(cnt)
cx,cy = x+w/2, y+h/2
color = hsv[cy,cx,0]
if (color < 10 or color > 170):
res.append([cx,cy,'R'])
elif(50 < color < 70):
res.append([cx,cy,'G'])
elif(20 < color <40):
res.append([cx,cy,'Y'])
elif(110 < color < 130):
res.append([cx,cy,'B'])
res = sorted(res,key = lambda res : res[0])
colors = [x[2] for x in res]
print colors
Source: stackoverflow.com
identify color sequence with OpenCV
import numpy as np
import cv2
img = cv2.imread('sofqn.png')
gray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
hsv = cv2.cvtColor(gray,cv2.COLOR_BGR2HSV)
Source: stackoverflow.com
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