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#图片美化
# 直方图 直方图均衡化 亮度增强 磨皮美白 图片滤波 高斯滤波
#图片修复
#彩色图片直方图
import cv2
import numpy as np
def ImageHist(image,type):
color=(255,255,255)
windowName = 'Gray'
if type ==31 :
color = (255,0,0)
windowName = 'B Hist'
elif type == 32:
color = (0,255,0)
windowName = 'G Hist'
elif type == 33:
color = (0,0,255)
windowName = 'R Hist'
hist = cv2.calcHist([image],[0],None,[256],[0.0,255.0]) #None 指蒙版
minV,maxV,minL,maxL=cv2.minMaxLoc(hist)
histImg = np.zeros([256,256,3],np.uint8)
for h in range(256):
intenNormal = int(hist[h]*256/maxV)
cv2.line(histImg,(h,256),(h,256-intenNormal),color)
cv2.imshow(windowName,histImg)
return histImg
img = cv2.imread('G:/02.jpg',1)
channels = cv2.split(img)
for i in range(0,3):
ImageHist(channels[i],31+i)
cv2.waitKey(0)
cs