我是新的东西opencv的和直方图均衡化的Python对于彩色图像
我试图直方图均衡手动的方式做的,不知我的输出类似 this
首先我转换格式YCR_CB首先格式化,然后将其分割为每个y,cr和cb。然后我在y层做了直方图均衡化的事情。
这里是我的代码:
from __future__ import division
import cv2
import numpy as np
img1 = cv2.imread("sup.jpg")
img2 = cv2.cvtColor(img1,cv2.COLOR_BGR2YCR_CB)
y,cr,cb = cv2.split(img2)
#y = cv2.equalizeHist(y)
x =y
height,width = y.shape
hist = [0]*256
pmf = [0]*256
cdf = [0]*256
levelBaru = [0]*256
cv2.imshow("y before",x)
cv2.waitKey(0)
for i in range(0,height):
for j in range(0,width):
hist[y.item(i,j)] += 1
#hist[y[i,j]] += 1
for i in range(0,256):
#cari pmf
pmf[i] = round(hist[i]/(height*width),4)
print "pmf done"
cdf[0] = pmf[0]
for i in range(1,256): #cari cdf
cdf[i] = cdf[i-1]+pmf[i]
for i in range(1,256): #cari levelBaru
levelBaru[i] = int(cdf[i]*255)
for i in range(0,height): #baru
for j in range(0,width):
for k in range (0,256):
if(y.item(i,j)==k):
#print i," ",levelBaru[i]
y.itemset((i,j),levelBaru[k])
img2 = cv2.merge((y,cr,cb))
img2 = cv2.cvtColor(img2,cv2.COLOR_YCR_CB2BGR) #supaya ga error pas di stack
#cv2.namedWindow('result', cv2.WINDOW_NORMAL)
cv2.imshow('result',img2)
cv2.waitKey(0)
cv2.destroyAllWindows
有点儿粘发现的bug,如果有人能帮助我,将是真棒
您应该包括在讨论的输出,而不是作为一个超链接 – JoeG