Python 給圖標添加水印，防止被盜用

 1 import os
 2 from PIL import Image, ImageDraw, ImageFont
 3 
 4 
 5 def add_text_to_image(image, text):
 6     font = ImageFont.truetype('C:\Windows\Fonts\AdobeHeitiStd-Regular.otf', 50) # 字體 50大小
 7 
 8     # 添加背景
 9     new_img = Image.new('RGBA', (image.size[0] * 3, image.size[1] * 3), (0, 0, 0, 0))
10     new_img.paste(image, image.size)
11 
12     # 添加水印
13     font_len = len(text)
14     rgba_image = new_img.convert('RGBA')
15     text_overlay = Image.new('RGBA', rgba_image.size, (255, 255, 255, 0))
16     image_draw = ImageDraw.Draw(text_overlay)
17 
18     for i in range(0, rgba_image.size[0], font_len * 40 + 100):
19         for j in range(0, rgba_image.size[1], 200):
20             image_draw.text((i, j), text, font=font, fill=(0, 0, 0, 50))
21     text_overlay = text_overlay.rotate(-45)
22     image_with_text = Image.alpha_composite(rgba_image, text_overlay)
23 
24     # 裁切圖片
25     image_with_text = image_with_text.crop((image.size[0], image.size[1], image.size[0] * 2, image.size[1] * 2))
26     return image_with_text
27 
28 
29 if __name__ == '__main__':
30     print(os.listdir('./img'))
31     for img in os.listdir('./img'):
32         print("./img/"+img)
33         Img = Image.open("./img/"+img)
34         im_after = add_text_to_image(Img, u'沃馬外賣 盜用非法 僅供展示')
35         im_after.save(u'./out_img/' + str(img)[0:-4] + '.png')
36     print('完')

效果圖