Takes a photo and coverts it to a ascii image. Requires numpy and PIL libraries.

ascimg.py

import Image
import numpy as n

#open image and convert to greyscale
img = Image.open('photo.png').convert('LA')
#get dimensions and scale them
w,h = img.size
# change to 4 and 7, respectivly to make smaller image
w /=2
h /=4
#resize to smaller dimensions
img = img.resize([w,h])
#get a list of pixel data
data = list(img.getdata())

#basic ascii ramp, need to reverse it
chars = [' ','.',':','-','=','+','*','#','%','@']
charsrev = chars[::-1]

#create a file
f = open('ascimg.txt', 'w')

for y in range(h):
	for x in range(w):
	    	#get the current pixel from the list, scale its value and write to file
		pixel = data[(y)*w+(x)]
		ave = n.floor(pixel[0]/24)
		f.write(charsrev[int(ave)])
	f.write('\n')	
f.close()