86 lines
2.5 KiB
Python
86 lines
2.5 KiB
Python
from random import random, choice
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from PIL import Image, ImageFilter
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from functools import reduce
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import argparse
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import os
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def color_ramp(white=(255, 255, 255), black=(0, 0, 0)):
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wr, wg, wb = white
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br, bg, bb = black
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colors = [[br + (wr - br) * i / 255, bg + (wg - bg) * i / 255, bb + (wb - bb) * i / 255] for i in range(255)]
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return list(map(int, reduce(list.__add__, colors)))
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sepia = color_ramp((255 - int(random()*25), 230 + int(random()*25), 179+int(random()*25)))
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decals = [os.path.join("decals", f) for f in os.listdir("decals") if os.path.isfile(os.path.join("decals", f))]
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def clamp(x, value, y):
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return max(x, min(value, y))
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def add_decal(image, decal):
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decal = Image.open(decal)
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w, h = image.size
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scale = .5 + random()
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scale = scale * min(w/decal.size[0], 1)
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decal = decal.rotate(random() * 360, expand=True)
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decal = decal.resize(map(int, (scale * decal.size[0], scale * decal.size[1])), Image.ANTIALIAS)
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dw, dh = decal.size
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pos = tuple(map(int, (random() * w - .5 * dw, random() * h - .5 * dh)))
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image.paste(decal, pos, decal)
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def add_noise(image, level):
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data = image.getdata()
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def noise(t):
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w = int(random() * 255 * level)
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r, g, b, a = t
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return clamp(0, r - w, 255), clamp(0, g - w, 255), clamp(0, b - w, 255), a
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data = list(map(noise, data))
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image.putdata(data)
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(description="Damages image")
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parser.add_argument('input', help='Image to damage', type=str)
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parser.add_argument('output', help='Output image name', type=str, nargs='?')
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parser.add_argument('damaged', help='Output damaged image name', type=str, nargs='?')
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parser.add_argument('-d', help='Decals count', type=int, default=8, dest="decals")
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parser.add_argument('-n', help='Noise level', type=float, default=.4, dest="noise")
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args = parser.parse_args()
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if args.output is None:
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dir, name = os.path.split(args.input)
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args.output = os.path.join(dir, "ok_" + name)
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if args.damaged is None:
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dir, name = os.path.split(args.input)
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args.damaged = os.path.join(dir, "damaged_" + name)
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im = Image.open(args.input)
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im = im.convert("L")
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im.putpalette(sepia)
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im = im.convert("RGBA")
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im.convert("RGB").save(args.output)
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add_noise(im, args.noise)
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for _ in range(args.decals):
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add_decal(im, choice(decals))
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im = im.filter(ImageFilter.GaussianBlur(1.5))
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im.convert("RGB").save(args.damaged)
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