How to use Python to convert pictures into character paintings

First of all, there is a problem, which is to simulate grayscale. Here is a formula:

1	Gray = 0.2126 × R + 0.7152 × G + 0.0722 × B

This will be easier to handle. Of course, in RGB mode, although the color range of 256x256x256 is converted into a grayscale range of 256, the characters are still not in one-to-one correspondence. We can solve this problem by using one character to correspond to multiple grayscales.

Remember to install the PIL library first, including:

If it is Python 2, run pip install PIL.

If it is Python 3, run pip install pillow.

Let’s go directly to the code:

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from PIL import Image #设置显示的字符集 ascii_char = list("$@B%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_+~<>i!lI;:,\"^`&#39;. ") WIDTH = 130 HEIGHT = 50 def get_char(r,g,b,alpha = 256): if alpha == 0: return &#39; &#39; length = len(ascii_char) gray = int(0.2126 * r + 0.7152 * g + 0.0722 * b) unit = (255.0 + 1)/length return ascii_char[int(gray/unit)] if __name__ == &#39;__main__&#39;: img = "E:/WindowsDocuments/G7/Desktop/1.png" im = Image.open(img) im = im.resize((WIDTH,HEIGHT), Image.NEAREST) txt = "" for i in range(HEIGHT): for j in range(WIDTH): txt += get_char(*im.getpixel((j,i))) txt += &#39;\n&#39; print(txt)

If you want to output to a file, you can add the file name you want to save in the definition part OUTPUT = 'output.txt', and then write it at the end:

1 2	with open(OUTPUT, 'w') as f: f.write(txt)

Finally, we got this:

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