图像进行反转：白变黑，黑变白

二值图对图像进行反转

import cv2
img = "5.png"
img = cv2.imread(img, 1)
cv2.imshow('img', img)
img_shape = img.shape
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
ret, binary = cv2.threshold(gray, 127, 255, cv2.THRESH_BINARY)
print(gray.shape)
dst = 255 - gray
ret2, binary2 = cv2.threshold(dst, 127, 255, cv2.THRESH_BINARY)
cv2.imshow('dst', dst)
cv2.imshow("binary",binary)
cv2.imshow("binary2",binary2)
cv2.waitKey(0)
cv2.destroyAllWindows()

灰度图图片反转

import PIL.ImageOps
from PIL import Image
img = Image.open(img)
img = img.convert('L')
img.show()

img = img.convert('L')
img = PIL.ImageOps.invert(img)
img = img.convert('L')
img.show()

彩色的图片反转

im02 = Image.open(img)
im= PIL.ImageOps.grayscale(im02)
im.show()

im= PIL.ImageOps.invert(im02)
im.show()

调整阈值对其反转

im0= PIL.ImageOps.solarize(img, 100)
im0.show()

版权声明：本文为CSDN博主「枭玉龙」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/qq_46107892/article/details/123138356