第一種：

from PIL import Image, ImageFilter, ImageOps
img = Image.open('E:\\picture\\1.png')
def dodge(a, b, alpha):
    return min(int(a*255/(256-b*alpha)), 255)
def draw(img, blur=25, alpha=1.0):
    img1 = img.convert('L')        #圖片轉換成灰色
    img2 = img1.copy()
    img2 = ImageOps.invert(img2)
    for i in range(blur):          #模糊度
        img2 = img2.filter(ImageFilter.BLUR)
    width, height = img1.size
    for x in range(width):
        for y in range(height):
            a = img1.getpixel((x, y))
            b = img2.getpixel((x, y))
            img1.putpixel((x, y), dodge(a, b, alpha))
    img1.show()
    img1.save('E:\\picture\\10.png')
draw(img)
 

第二種：

from PIL import Image
import os
 
# 影象組成：紅綠藍  （RGB）三原色組成    亮度（255,255,255）
image = "E:\\picture\\123.png"
img = Image.open(image)
img_all =  "E:\\picture\\1234.png"
new = Image.new("L", img.size, 255)
width, height = img.size
img = img.convert("L")
# print(img.size)
# print(img.mode) #RBG
#
# img_get = img.getpixel((0, 0))
# print(img_get) #三原色通道
#
# img_L=img.convert('L')
# print(img_L)
# img_get_L=img_L.getpixel((0,0))    #換算 得到灰度值
# print(img_get_L)
 
# 定義畫筆的大小
Pen_size = 3
# 色差擴散器
Color_Diff = 6
for i in range(Pen_size + 1, width - Pen_size - 1):
    for j in range(Pen_size + 1, height - Pen_size - 1):
        # 原始的顏色
        originalColor = 255
        lcolor = sum([img.getpixel((i - r, j)) for r in range(Pen_size)]) // Pen_size
        rcolor = sum([img.getpixel((i + r, j)) for r in range(Pen_size)]) // Pen_size
 
        # 通道----顏料
        if abs(lcolor - rcolor) > Color_Diff:
            originalColor -= (255 - img.getpixel((i, j))) // 4
            new.putpixel((i, j), originalColor)
 
        ucolor = sum([img.getpixel((i, j - r)) for r in range(Pen_size)]) // Pen_size
        dcolor = sum([img.getpixel((i, j + r)) for r in range(Pen_size)]) // Pen_size
 
        # 通道----顏料
        if abs(ucolor - dcolor) > Color_Diff:
            originalColor -= (255 - img.getpixel((i, j))) // 4
            new.putpixel((i, j), originalColor)
 
        acolor = sum([img.getpixel((i - r, j - r)) for r in range(Pen_size)]) // Pen_size
        bcolor = sum([img.getpixel((i + r, j + r)) for r in range(Pen_size)]) // Pen_size
 
        # 通道----顏料
        if abs(acolor - bcolor) > Color_Diff:
            originalColor -= (255 - img.getpixel((i, j))) // 4
            new.putpixel((i, j), originalColor)
 
        qcolor = sum([img.getpixel((i + r, j - r)) for r in range(Pen_size)]) // Pen_size
        wcolor = sum([img.getpixel((i - r, j + r)) for r in range(Pen_size)]) // Pen_size
 
        # 通道----顏料
        if abs(qcolor - wcolor) > Color_Diff:
            originalColor -= (255 - img.getpixel((i, j))) // 4
            new.putpixel((i, j), originalColor)
 
new.save(img_all)
 
i = os.system('mshta vbscript createobject("sapi.spvoice").speak("%s")(window.close)' % '您的圖片轉換好了')
os.system(img_all)
 

如果報錯

可以直接安裝
命令pip install Pillow即可