%pylab inline
from IPython.display import Image

display(Image('pdf_text.png'))

# First, let's get the PDF file contents as a byte stream
data = open('puzzle.pdf', 'rb').read()

import zlib
decompressed = zlib.decompress(data[78:(78+324)])

print(''.join(chr(x) for x in decompressed))

lines = ''.join(chr(x) for x in decompressed).split('\n')
elements = [l.split(' ') for l in lines]
x = []
y = []
for row in elements[:-3]:
    x.append(row[-2])
    y.append(row[-1])

plot(x, y)
axis('equal')

import re
matches = list(re.finditer(b'stream\n((.|\n)*?)\nendstream', data))

for m in matches:
    decompressed = zlib.decompress(m.group(1))
    print('============ MATCH =============')
    print(''.join(chr(x) for x in decompressed[:2000]))

m = matches[1]
decompressed = zlib.decompress(m.group(1))
print(''.join(chr(x) for x in decompressed[:20000]))

lines = ''.join(chr(x) for x in decompressed).split('\n')
print(len(lines), len(lines[0]))

imdata = np.array(bytearray(decompressed), dtype=np.uint8)
print(len(imdata))

for m in range(100,500):
    if mod(len(imdata), m) == 0:
        n = len(imdata) // m
        figure()
        title((m, n))
        imshow(imdata.reshape((m, len(imdata) // m)))

figure(figsize=(10,10))
imshow(np.repeat(imdata.reshape((126,438,1)),3, axis=2))

figure(figsize=(10,10))
imshow(np.repeat(imdata.reshape((126,438,1)),3, axis=2), extent=(0,146,0,126))