Apertus - C/C++ Challenge

My solution to the C/C++ Challenge from Apertus for GSoC.

The Challenge:

The goal is to build a small application which decodes a buffer with raw image data from the AXIOM Beta and converts it using the LodePNG library to create a viewable PNG image.

1. Create a simple C/C++ console application using the development environment of your choice

2. Add lodepng.c/cpp and lodepng.h from the LodePNG website to your project / Makefile / whatever you use

3. Read image data from a RAW12 file (sample file: portrait-gainx2-offset2047-20ms-02.raw12, 4096x3072, 12bit, color sensor with bayer color filter array)

4. Save one of the Bayer color channels (red, green1, green2 or blue) as a grayscale 8-bit PNG (2048x1536 Resolution) using the LodePNG library. This PNG should be view-able/compatible with any image-viewer that can display PNG. Optional:

5. Bonus points if your application runs on the AXIOM Beta firmware in QEMU.

6. Bonus points if you use an existing debayering method to recover a color image.

All the six goals were done.

Instructions for linux-based environments

Make sure you have the required dependencies!

1. Open the folder and run the makefile.

make

2. To run the program, insert the neccessary arguments.

./RAWtoPNG <filename> <width> <height>

3. The output images are stored in the same folder with the following names.

layerRED.png
layerGREEN0.png
layerGREEN1.png
layerBLUE.png
layerCOLOR.png