Bgr转Hsv
import cv2
import matplotlib.pyplot as plt
import numpy as np
def colorSpaceTestEx():
bgr_s = [(0,0,255), (0,255,0), (255,0,0), (0,255,255), (255,255,0), (255,0,255), (0,0,0), (120,120,120), (255,255,255)]
titles = ("Red", "Green", "Blue", "Yellow", "Cyan", "Purple"