h4cc

Howto

Install these programms

sudo apt-get install gnome-raw-thumbnailer ufraw-batch

Try now if everything works, and your thumbnails show up. If not, try the following part.

dlech

#!/usr/bin/env python

# Python port of the HiTechnic HTWay for ev3dev
# Copyright (c) 2014-2015 G33kDude, David Lechner
# HiTechnic HTWay is Copyright (c) 2010 HiTechnic


import itertools
import os
import struct