代码

from PIL import Image

# 定义 ASCII 字符集，从最暗到最亮
ASCII_CHARS = "@%#*+=-:. "

def resize_image(image, new_width=100):
    width, height = image.size
    ratio = height / width
    new_height = int(new_width * ratio)
    resized_image = image.resize((new_width, new_height))
    return resized_image

def grayify(image):
    grayscale_image = image.convert("L")
    return grayscale_image

def pixels_to_ascii(image):
    pixels = image.getdata()
    characters = "".join([ASCII_CHARS[pixel // 25] for pixel in pixels])
    return characters

def main(new_width=100):
    image_path = input("请输入图片的路径: ")
    try:
        image = Image.open(image_path)
    except Exception as e:
        print(f"无法打开图片: {e}")
        return

    new_image_data = pixels_to_ascii(grayify(resize_image(image, new_width)))
    pixel_count = len(new_image_data)
    ascii_image = "\n".join([new_image_data[index:(index + new_width)] for index in range(0, pixel_count, new_width)])

    print(ascii_image)

    with open("ascii_image.txt", "w") as f:
        f.write(ascii_image)

if __name__ == "__main__":
    main()
    

效果

原图

效果图