121 lines
No EOL
2.7 KiB
Python
121 lines
No EOL
2.7 KiB
Python
# Gray = 0.21 R + 0.72 G + 0.07 B
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from PIL import Image
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import json
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import time
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import sys
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asciifile = open('asciitable.json')
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asciitable = json.loads(asciifile.read())
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asciifile.close()
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for key in asciitable:
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asciitable[key] = int(asciitable[key]) + 1
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asciikeys = list(asciitable.keys())
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asciivals = list(asciitable.values())
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asciikeys.sort(key=asciitable.get)
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each = 256 / len(asciivals)
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asciivals = [((x+1) * each) for x in range(len(asciivals))]
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print("Loaded ASCII table.")
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def average(inx):
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r, g, b = 0, 0, 0
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width = inx.size[0]
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height = inx.size[1]
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area = width * height
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transparent = False
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for y in range(height):
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for x in range(width):
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pixel = inx.getpixel((x, y))
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if "RGB" in inx.mode:
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try:
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if pixel[3] == 0:
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transparent = True
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except IndexError:
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pass
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r += pixel[0]
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g += pixel[1]
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b += pixel[2]
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else:
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r += pixel
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g += pixel
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b += pixel
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if not transparent:
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r = int(r/ area)
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g = int(g/ area)
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b = int(b/ area)
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i = int((0.21 * r) + (0.72 * g) + (0.07 * b))
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return [r, g, b, i]
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return [255, 255, 255, 255]
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def boot():
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global asciikeys
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global asciivals
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try:
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FILENAME = input('File: ')
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if '.' not in FILENAME:
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FILENAME += '.png'
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resolution = input('x y (leave blank for standard): ')
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if resolution != "":
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XVALUE = int(resolution.split()[0])
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YVALUE = int(resolution.split()[1])
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else:
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XVALUE = 8
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YVALUE = 12
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CONTRAST = input('Smooth 1-~ (blank for standard): ')
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try:
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CONTRAST = int(CONTRAST)
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if CONTRAST < 1:
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CONTRAST = 1
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except ValueError:
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CONTRAST = 8
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except EOFError:
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FILENAME = "Raspberry.png"
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XVALUE = 8
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YVALUE = 12
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CONTRAST = 8
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#Optimal resolutions include:
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# 9 x 15
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# 3 x 5 (huge!)
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# 8 x 12
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ascii(FILENAME, XVALUE, YVALUE, CONTRAST)
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def ascii(FILENAME, XVALUE, YVALUE, CONTRAST):
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rpi = Image.open(FILENAME)
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width = rpi.size[0]
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height = rpi.size[1]
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charspanx = int(width / XVALUE)
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charspany = int(height / YVALUE)
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print("%d x %d characters" % (charspanx, charspany))
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output = ""
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print("Working...")
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for yline in range(charspany):
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print("\r%0.2f" % (yline/charspany), end='')
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sys.stdout.flush()
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for xline in range(charspanx):
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xcoord = xline*XVALUE
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ycoord = yline*YVALUE
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region = (xcoord, ycoord, xcoord+XVALUE, ycoord+YVALUE)
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region = rpi.crop(region)
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av = average(region)
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i = av[3]
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c = 0
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for value in asciivals:
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if i == 255:
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output += ' '
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break
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if i <= value:
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output += asciikeys[c]
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break
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c += 1
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output += "\n"
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output += '\n%s\n%dx%d\n%d' % (FILENAME, XVALUE, YVALUE, CONTRAST)
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outfile = FILENAME.split('.')[0] + '.txt'
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outfile = open(outfile, 'w')
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print(output, file=outfile)
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outfile.close()
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print("\r1.00")
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if __name__ == "__main__":
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boot() |