PixelsToSVG

PixelsToSVG/README.md

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+Pixels to SVG
+=============
+
+Convert an image into an SVG file where every pixel is a rectangle object. Good idea? Who knows.
+
+Usage:
+
+    > pixelstosvg.py <filename> [<output name>]
+
+    > pixelstosvg.py image.png
+    Produces image.png.svg
+
+    > pixelstosvg.py image.png special.svg
+    Produces special.svg

PixelsToSVG/pixelstosvg.py

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+import argparse
+import os
+import PIL.Image
+import random
+import sys
+
+SVG_TEMPLATE = '''
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
+    xmlns:cc="http://creativecommons.org/ns#"
+    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+    xmlns:svg="http://www.w3.org/2000/svg"
+    xmlns="http://www.w3.org/2000/svg"
+    id="svg5633"
+    version="1.1"
+    viewBox="0 0 {width} {height}"
+    height="{height}mm"
+    width="{width}mm">
+    <defs
+        id="defs5627" />
+    <metadata
+        id="metadata5630">
+    <rdf:RDF>
+        <cc:Work
+            rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+            rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+        </cc:Work>
+    </rdf:RDF>
+</metadata>
+<g
+    id="layer1">
+    {rectangles}
+</g>
+</svg>
+'''.strip()
+
+RECTANGLE_TEMPLATE = '''
+<rect
+y="{y}"
+x="{x}"
+height="{height}"
+width="{width}"
+id="{id}"
+style=
+    "opacity:{opacity};
+    fill:{fill};
+    fill-opacity:{opacity};
+    fill-rule:nonzero;
+    stroke:none;
+    stroke-width:0;
+    stroke-linecap:round;
+    stroke-linejoin:miter;
+    stroke-miterlimit:4;
+    stroke-dasharray:none;
+    stroke-dashoffset:0;
+    stroke-opacity:1"
+/>
+'''.strip()
+
+def normalize_rgb(rgb, mode):
+    if mode == '1':
+        v = rgb * 255
+        return (v, v, v, 255)
+    if mode == 'L':
+        return (rgb, rgb, rgb, 255)
+    if mode == 'RGB':
+        return rgb + (255, )
+    if mode == 'RGBA':
+        return rgb
+
+def int_to_hex(i):
+    return hex(i)[2:].rjust(2, '0')
+
+def rgb_to_hex(rgb):
+    return '#' + ''.join(int_to_hex(x) for x in rgb)
+
+def make_svg(image):
+    rectangles = []
+    (width, height) = image.size
+    for y in range(height):
+        for x in range(width):
+            pixel = image.getpixel((x, y))
+            pixel = normalize_rgb(pixel, image.mode)
+            (rgb, opacity) = (pixel[:-1], pixel[-1])
+            fill = rgb_to_hex(rgb)
+            #print(fill)
+            opacity = opacity / 255
+            rectangle = RECTANGLE_TEMPLATE.format(
+                x=x,
+                y=y,
+                width=1,
+                height=1,
+                id=str(random.random()),
+                fill=fill,
+                opacity=opacity,
+            )
+            rectangles.append(rectangle)
+            #print(rectangle)
+    rectangles = '\n'.join(rectangles)
+    svg = SVG_TEMPLATE.format(width=width, height=height, rectangles=rectangles)
+    return svg
+
+def image_to_svg(image_filename, svg_filename=None):
+    svg_filename = svg_filename or ''
+    if not svg_filename:
+        svg_filename = image_filename + '.svg'
+
+    image = PIL.Image.open(image_filename)
+    svg = make_svg(image)
+    with open(svg_filename, 'w') as handle:
+        handle.write(svg)
+
+def image_to_svg_argparse(args):
+    return image_to_svg(
+        image_filename=args.image_filename,
+        svg_filename=args.svg_filename
+    )
+
+def main(argv):
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument('image_filename')
+    parser.add_argument('svg_filename', nargs='?', default=None)
+    parser.set_defaults(func=image_to_svg_argparse)
+
+    args = parser.parse_args(argv)
+    args.func(args)
+
+if __name__ == '__main__':
+    main(sys.argv[1:])