导读

1. 灰度图像颜色反转
2. 彩色图像颜色反转

1. 灰度图像颜色反转

import cv2
import numpy as np

img = cv2.imread("../01_Img/01.jpg", 1)
imgGray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
imgInfo = img.shape

dst = np.zeros((imgInfo[0], imgInfo[1], 1), np.uint8)

for i in range(0, imgInfo[0]):
    for j in range(0, imgInfo[1]):
        dst[i, j] = 255-imgGray[i, j]

cv2.imshow("", dst)
cv2.waitKey(0)

2. 彩色图像颜色反转

import cv2
import numpy as np

img = cv2.imread("../01_Img/01.jpg", 1)
imgInfo = img.shape

dst = np.zeros((imgInfo[0], imgInfo[1], 3), np.uint8)

for i in range(0, imgInfo[0]):
    for j in range(0, imgInfo[1]):
        dst[i, j] = 255-img[i, j]

cv2.imshow("", dst)
cv2.waitKey(0)