python jpg2svg

就是把png中的每一个像素转换成一个小矩形，图片小的话效果还行。

def jpg_to_svg(path):
    image_raw = tf.io.gfile.GFile(path, 'rb').read()
    img = tf.image.decode_jpeg(image_raw, channels=1)
    w, h, c = img.shape
    res = ['<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 ',
           str(w), ' ', str(h), '">']

    for y in range(len(img)):
        line = img[y]
        for x in range(len(line)):
            pixel = line[x]
            color = pixel[0]
            s = str(hex(color))[2:]
            add = ['<rect x="', str(x), '" y="', str(y),
                   '" width="1" height="1" fill="#', s, s, s, '"/>']
            res.append(''.join(add))
    res.append('</svg>')
    with open(path+'.svg', mode='w') as file_handle:
        file_handle.write(''.join(res))