import cv2
import numpy as np

image = cv2.imread("aa.png")
row, col, ch = image.shape
#graying = np.zeros((row, col, 1), np.uint8)
#baru = np.zeros((row, col, 1), np.uint8)
cv2.imshow("gambar", image)

for i in range(0,row):
    for j in range(0, col):
        blue, green, red = image[i,j]
        #gray = (red * 0.299 + green * 0.587 + blue * 0.114)
        #graying.itemset((i,j,0), gray)
        bluee = blue+50
        greenn = green+50
        redd = red+50

        if redd>255:
            redd=255
        if greenn>255:
            greenn=255
        if bluee>255:
            bluee=255

        if bluee<0:
            bluee=0
        if greenn<0:
            greenn=0
        if redd<0:
            redd=0

        image.itemset((i,j,0),bluee)
        image.itemset((i,j,1),greenn)
        image.itemset((i,j,2),redd)

#cv2.imshow('gambar',graying)
cv2.imshow('brightness', image)

cv2.waitKey(0)
cv2.destroyAllWindows()