使用 Python 将图像转换为 ASCII 图像
在本文中,我们想将给定的图像转换为文本基图像,也称为 ASCII 图像。
以下 Python 程序将采用输入图像以及各种函数,将其转换为灰度图片,然后应用 ASCII 字符创建不同的图案来插入图像。最后,电子邮件会生成文本基图像,这是一系列平面 ASCII 字符。
示例
from PIL import Image
import os
ASCII_CHARS = [ '#', '?', '%', '.', 'S', '+', '.', '*', ':', ',', '@']
def resize_image(image, new_width=25):
(input__width, input__height) = image.size
aspect_ratio = input__height/float(input__width)
changed_height = int(aspect_ratio * new_width)
changed_image = image.resize((new_width, changed_height))
return changed_image
def make_grey(image):
return image.convert('L')
def pixel_to_ascii(image, range_width=25):
pixels_in_image = list(image.getdata())
pixels_to_chars = [ASCII_CHARS[pixel_value//range_width] for pixel_value in
pixels_in_image]
return "".join(pixels_to_chars)
def image_to_ascii(image, new_width=25):
image = resize_image(image)
image = make_grey(image)
pixels_to_chars = pixel_to_ascii(image)
len_pixels_to_chars = len(pixels_to_chars)
image_ascii = [pixels_to_chars[index: index + new_width] for index in
range(0, len_pixels_to_chars, new_width)]
return "\n".join(image_ascii)
def convert_image(image_filepath):
# image = None
try:
image = Image.open(image_filepath)
except Exception as e:
print("Unable to open image file {image_filepath}.".format(image_filepath=image_filepath))
print(e)
return
image_ascii = image_to_ascii(image)
f = open(os.path.splitext(image_filepath)[0]+'.txt','w')
f.write(image_ascii)
f.close()
convert_image('D:\button.jpg')输出
运行上述代码,可得到以下结果 −
输入图像

输出图像

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