マスクで指定する範囲の色の平均値を取得
2019/09/19
Python2.7.8, OpenCV4.1.1
ret,thresh = cv2.threshold(gray,127,255,1)
datos_rgb = cv2.mean(img, mask=thresh)[::-1]
r = int(datos_rgb[1])
g = int(datos_rgb[2])
b = int(datos_rgb[3])
RGB average of circles
https://stackoverflow.com/questions/43086715/rgb-average-of-circles