Intro

This a a JPEG visualizer in just 280 250 lines in easy to read python code.

Features

• No external libraries were used
• Friendly code can be easily ported to any other languages and embedded devices
• It works with JPG's that are made of 8x8 blocks and 3 channels (Y, Cr, Cb).
• Other formats are easy to add though.
• Its slow, due to the IDTC, which is done by brute force

I'm sharing the code hoping this may help others.

Feel free to drop me a mail if you find this useful :-)

Funny Facts

• I used notepad and debugged it using print's
• I used python because it was the handiest thing I had
• I wrote it just learn something hard
• It took me 3 evenings to finish it up
• the most difficult part was handling the run length encoding that I had to reverse engineer myself.
• What an amazing feeling to see such a simple piece of code displaying a pic!

Credits

by Raul Aguaviva

This project wouldn't have been possible without the hard work of these folks:

• Calvin Hass for his excellent web page http://www.impulseadventure.com/
• The editors of the wikipedia JPEG article.