python小工具图片字符串转化

python小工具图片字符串转化

写在前面

这是一个python将文件转化成字符串的小工具,不过解析的质量比较差,是根据像素,来填充字符的

这里是代码

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# -*- coding: utf-8 -*-
'''
File Name: picpy.py
Author: liangyou.qiao
mail: liangyou.qiao@shuyun.com
Created Time: 四 5/19 10:25:59 2016
'''
from PIL import Image
ASCII_CHARS = [ '#', '?', '%', '.', 'S', '+', '.', '*', ':', ',', '@']
def scale_image(image, new_width=50):
(original_width, original_height) = image.size
aspect_ratio = original_height/float(original_width)
new_height = int(aspect_ratio * new_width)
new_image = image.resize((new_width, new_height))
return new_image
def convert_to_grayscale(image):
return image.convert('L')
def map_pixels_to_ascii_chars(image, range_width=50):
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 convert_image_to_ascii(image, new_width=50):
image = scale_image(image)
image = convert_to_grayscale(image)
pixels_to_chars = map_pixels_to_ascii_chars(image)
len_pixels_to_chars = len(pixels_to_chars)
image_ascii = [pixels_to_chars[index: index + new_width] for index in
xrange(0, len_pixels_to_chars, new_width)]
return "\n".join(image_ascii)
def handle_image_conversion(image_filepath):
image = None
try:
image = Image.open(image_filepath)
except Exception, e:
print "Unable to open image file {image_filepath}.".format(image_filepath=image_filepath)
print e
return
image_ascii = convert_image_to_ascii(image)
print image_ascii
if __name__=='__main__':
import sys
image_file_path = sys.argv[1]
handle_image_conversion(image_file_path)

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