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08亮度增强

08亮度增强

作者: 犬夜叉写作业 | 来源:发表于2019-07-18 22:41 被阅读0次

    1、简单的加上一个固定值

    # p = p+40  简单的加上一个固定值
    import cv2
    import numpy as np
    img = cv2.imread('image0.jpg',1)
    imgInfo = img.shape
    height = imgInfo[0]
    width = imgInfo[1]
    cv2.imshow('src',img)
    
    dst = np.zeros((height,width,3),np.uint8)
    
    for i in range(0,height):
        for j in range(0,width):
            (b,g,r) = img[i,j]
            bb = int(b)+40
            gg = int(g)+40
            rr = int(r)+40
            if bb>255:
                bb = 255
            if gg>255:
                gg = 255
            if rr>255:
                rr = 255
            dst[i,j] = (bb,gg,rr)
    cv2.imshow('dst',dst)
    cv2.waitKey(0)
    

    2、乘以一个数再加上一个数

    # p = p+40
    # p = p*1。2+40
    # g+r P*piexl = new
    import cv2
    import numpy as np
    img = cv2.imread('image0.jpg',1)
    imgInfo = img.shape
    height = imgInfo[0]
    width = imgInfo[1]
    cv2.imshow('src',img)
    dst = np.zeros((height,width,3),np.uint8)
    for i in range(0,height):
        for j in range(0,width):
            (b,g,r) = img[i,j]
            bb = int(b*1.3)+10
            gg = int(g*1.2)+15
    
            if bb>255:
                bb = 255
            if gg>255:
                gg = 255
    
            dst[i,j] = (bb,gg,r)
    cv2.imshow('dst',dst)
    cv2.waitKey(0)
    
    
    

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