python用字符組成圖像代碼實例

更新時間：2022年01月11日 09:25:39 作者：autofelix

大家好，本篇文章主要講的是python用字符組成圖像代碼實例，感興趣的同學(xué)趕快來看一看吧，對你有幫助的話記得收藏一下，方便下次瀏覽

一、特效預(yù)覽

處理前

處理后

細節(jié)放大后

二、程序原理

將圖片所在的 256 的灰度映射到相應(yīng)的字符上面

也就是 RGB 值轉(zhuǎn)成相應(yīng)的字符

然后再將字符其寫入文件即可

你聽懂了嗎

三、程序源碼

#!/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 + '圖片轉(zhuǎn)換為字符圖片')
        print(' ' * 5 + 'Author: autofelix  Date: 2022-01-07 13:14')
        print('*' * 50)
        return self
 
    def get_char(self, r, g, b, alpha=256):
        '''
        將256灰度映射到70個字符上，也就是RGB值轉(zhuǎn)字符的函數(shù)
        :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()