import cv2 as cv      ###导入openc包
def color_space_demo(image):
  gray = cv.cvtColor(image,cv.COLOR_BGR2GRAY)
  cv.imshow("gray",gray)
  hsv = cv.cvtColor(image,cv.COLOR_BGR2HSV)
  cv.imshow("hsv",hsv)
  yuv = cv.cvtColor(image,cv.COLOR_BGR2YUV)
  cv.imshow("yuv",yuv)
  Ycrcb = cv.cvtColor(image,cv.COLOR_BGR2YCrCb)
  cv.imshow("Ycrcb",Ycrcb)
  HIS = cv.cvtColor(image,cv.COLOR_BGR2HLS)
  cv.imshow("HIS",HIS)
print("--------hello python------------")
src=cv.imread("F:/shiyan/1.png")    ###读取F:/shiyan/1.png路径下的名为1格式为.png的图片
cv.namedWindow("input image",cv.WINDOW_AUTOSIZE)    ###给图片显示的窗口命名为input image
cv.imshow("input image",src)    ###显示图片
color_space_demo(src)
cv.waitKey(0)    ###等待下一步指令
cv.destroyAllWindows()    ###为了能正常关闭所有的绘图窗口。