contrast Scaling 대비

import cv2
import numpy as np

img = cv2.imread('data/images/candle.jpg')

scaleFactor = 2.5

ycbImage = cv2.cvtColor(img, cv2.COLOR_BGR2YCrCb)

ycbImage = ycbImage.astype('float')

Ychannel, Cr,Cb =cv2.split(ycbImage)

Ychannel = np.clip(Ychannel*scaleFactor,0,255)

ycbImage = cv2.merge([Ychannel,Cr,Cb])
ycbImage = np.uint8(ycbImage)

ycbImage = cv2.cvtColor(ycbImage, cv2.COLOR_YCrCb2BGR)

combined = np.hstack([img, ycbImage])

cv2.imshow('comb', combined)

cv2.waitKey(0)
cv2.destroyAllWindows()