python 特效之字符成像

什么是 字符成像

将原图片经过python处理后,生成完全由纯字符组成的图像。


一、特效预览

python 特效之字符成像

处理前

python 特效之字符成像

处理后

python 特效之字符成像

细节放大后


二、程序原理

  • 将图片所在的256的灰度映射到相应的字符上面
  • 也就是RGB值转成相应的字符
  • 然后再将字符其写入文件即可

python 特效之字符成像

你听懂了吗


三、程序源码

#!/usr/bin/env python
# encoding: utf-8
from PIL import Image
class charsetPicture:
    '''
     This is a main Class, the file contains all documents.
     One document contains paragraphs that have several sentences
     It loads the original file and converts the original file to new content
     Then the new content will be saved by this class
    '''
    def __init__(self):
        self.char = list("$@B%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_+~<>i!lI;:,\"^`'. ")
        self.width = 160
        self.height = 60
    def hello(self):
        '''
        This is a welcome speech
        :return: self
        '''
        print('*' * 50)
        print(' ' * 18 + '图片转换为字符图片')
        print(' ' * 5 + 'Author: autofelix  Date: 2022-01-07 13:14')
        print('*' * 50)
        return self
    def get_char(self, r, g, b, alpha=256):
        '''
        将256灰度映射到70个字符上,也就是RGB值转字符的函数
        :alpha: 透明度
        :return: self
        '''
        if alpha == 0:
            return ' '
        length = len(self.char)
        gray = int(0.2126 * r + 0.7152 * g + 0.0722 * b)
        unit = (256.0 + 1) / length
        return self.char[int(gray / unit)]
    def run(self):
        '''
        The program entry
        '''
        im = Image.open('assets/aaa.jpeg')
        im = im.resize((self.width, self.height), Image.NEAREST)
        txt = ''
        for i in range(self.height):
            for j in range(self.width):
                txt += self.get_char(*im.getpixel((j, i)))
            txt += '\n'
        print(txt)
        with open('handler.txt', 'w') as f:
            f.write(txt)
if __name__ == '__main__':
    charsetPicture().hello().run()
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