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|
| """Assembles images into a grid.""" |
|
|
| import argparse |
| import math |
| import sys |
|
|
| from PIL import Image |
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|
|
| def main(): |
| p = argparse.ArgumentParser(description=__doc__) |
| p.add_argument('images', type=str, nargs='+', metavar='image', |
| help='the input images') |
| p.add_argument('--output', '-o', type=str, default='out.png', |
| help='the output image') |
| p.add_argument('--nrow', type=int, |
| help='the number of images per row') |
| args = p.parse_args() |
|
|
| images = [Image.open(image) for image in args.images] |
| mode = images[0].mode |
| size = images[0].size |
| for image, name in zip(images, args.images): |
| if image.mode != mode: |
| print(f'Error: Image {name} had mode {image.mode}, expected {mode}', file=sys.stderr) |
| sys.exit(1) |
| if image.size != size: |
| print(f'Error: Image {name} had size {image.size}, expected {size}', file=sys.stderr) |
| sys.exit(1) |
|
|
| n = len(images) |
| x = args.nrow if args.nrow else math.ceil(n**0.5) |
| y = math.ceil(n / x) |
|
|
| output = Image.new(mode, (size[0] * x, size[1] * y)) |
| for i, image in enumerate(images): |
| cur_x, cur_y = i % x, i // x |
| output.paste(image, (size[0] * cur_x, size[1] * cur_y)) |
|
|
| output.save(args.output) |
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|
|
| if __name__ == '__main__': |
| main() |
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|
