# 2. ASCII字符映射表

``````ascii_characters_by_surface = "`^",:;Il!i~+_-?][}{1)(|\/tfjrxnuvczXYUJCLQ0OZmwqpdbkhao*#MW&8%B@\$"
``````

# 3. 计算单个像素亮度

``````(r, g, b) = pixel
pixel_brightness = r + g + b
max_brightness = 255 * 3
``````

# 4. 将像素转换为ASCII字符

``````brightness_weight = len(ascii_characters_by_surface) / max_brightness
``````

``````index = int(pixel_brightness * brightness_weight) - 1
``````

``````return ascii_characters_by_surface[index]
``````

# 5. 转换图像

``````from PIL import Image

image = Image.open('image.jpg')
(width, height) = image.size
``````

``````for y in range(0, height - 1):
for x in range(0, width - 1):
px = image.getpixel((x, y))
``````

``````ascii_art = []
for y in range(0, height - 1):
line = ''
for x in range(0, width - 1):
px = image.getpixel((x, y))
line += convert_pixel_to_character(px)
ascii_art.append(line)
``````

# 6. 结果输出

``````def save_as_text(ascii_art):
with open("image.txt", "w") as file:
for line in ascii_art:
file.write(line)
file.write('n')
file.close()
``````

# 7. 主函数调用

``````from PIL import Image

ascii_characters_by_surface = "`^",:;Il!i~+_-?][}{1)(|\/tfjrxnuvczXYUJCLQ0OZmwqpdbkhao*#MW&8%B@\$"
def main():
image = Image.open('image.jpg')
# you can first resize the image if needed
# image = image.resize((width, height))
ascii_art = convert_to_ascii_art(image)
save_as_text(ascii_art)
if __name__ == '__main__':
main()
``````

# 9. 总结

THE END

https://jq.qq.com/?_wv=1027&k=eFIPd3nl

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