Svenska ElektronikForumet

Kod: Markera allt

hsv = cv2.cvtColor(img,cv2.COLOR_BGR2HSV)

lower_blue = np.array([100,100,100])
upper_blue = np.array([150,255,255])

mask = cv2.inRange(hsv,lower_blue, upper_blue)

result = cv2.bitwise_and(img,img,mask = mask)

imgray = cv2.cvtColor(result,cv2.COLOR_BGR2GRAY)

im2, contours, hierarchy = cv2.findContours(imgray,cv2.RETR_TREE,cv2.CHAIN_APPROX_SIMPLE)
cv2.drawContours(img, contours, -1, (0,255,0), 3)

cv2.imshow('masked',result)
cv2.imshow('contours',img)

Kod: Markera allt

hsv = cv2.cvtColor(img,cv2.COLOR_BGR2HSV)

lower_board = np.array([0,0,230])
upper_board = np.array([180,255,255])

mask = cv2.inRange(hsv,lower_board, upper_board)

result = cv2.bitwise_and(img,img,mask = mask)

imgray = cv2.cvtColor(result,cv2.COLOR_BGR2GRAY)

im2, contours, hierarchy = cv2.findContours(imgray,cv2.RETR_TREE,cv2.CHAIN_APPROX_SIMPLE)

for i, contour in enumerate(contours):
    area = cv2.contourArea(contour)
    if area <= 10000:
        continue

    epsilon = 0.1*cv2.arcLength(contour,True)
    approx = cv2.approxPolyDP(contour,epsilon,True)
    cv2.drawContours(img,[approx],0,(0,0,255),2)
    print(approx)

pts1 = np.float32(approx)
pts2 = np.float32([[0, 0], [0, 500], [750, 500], [750, 0]])
matrix = cv2.getPerspectiveTransform(pts1, pts2)

warped = cv2.warpPerspective(img, matrix, (750, 500))