Change Details

Please complete this task as part of your GSoC 2018 application. This challenge is mandatory if you apply for T720, T763 or T722. For FPGA-related tasks, please complete the [FPGA challenge](https://lab.apertus.org/T871) instead. 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](http://lodev.org/lodepng/) to create a viewable PNG image. # Create a simple C/C++ console application using the development environment of your choice # Add lodepng.c/cpp and lodepng.h from the [LodePNG website](http://lodev.org/lodepng/) to your project / Makefile / whatever you use # Read image data from a RAW12 file (sample file: [portrait-gainx2-offset2047-20ms-02.raw12](http://files.apertus.org/AXIOM-Beta/snapshots/portraits/portrait-gainx2-offset2047-20ms-02.raw12), 4096x3072, 12bit, color sensor with bayer color filter array) # Save one of the Bayer channels (any of them) as a grayscale 8-bit PNG using the LodePNG library # Bonus points if your application runs on the [AXIOM Beta firmware in QEMU](https://github.com/apertus-open-source-cinema/axiom-beta-qemu). (this is optional) **Collected information:** - RAW12: https://wiki.apertus.org/index.php/RAW12 - Bayer Pattern: https://en.wikipedia.org/wiki/Bayer_filter - 12bit conversion: https://stackoverflow.com/questions/33768206/convert-2-bytes-into-12-bit-number - 12bit conversion (SIMD not required): https://stackoverflow.com/questions/15443868/fastest-way-to-convert-12bit-image-to-16bit-image - [Processing RAW images in MATLAB](https://rcsumner.net/raw_guide/RAWguide.pdf) (useful as overview; we are not asking for color-correct output)

Please complete this task as part of your GSoC 2018 application when applying for matching ideas. This challenge is mandatory if you apply for T720, T763 or T722. For FPGA-related tasks, please complete T871 instead. --- 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](http://lodev.org/lodepng/) to create a viewable PNG image. # Create a simple C/C++ console application using the development environment of your choice # Add lodepng.c/cpp and lodepng.h from the [LodePNG website](http://lodev.org/lodepng/) to your project / Makefile / whatever you use # Read image data from a RAW12 file (sample file: [portrait-gainx2-offset2047-20ms-02.raw12](http://files.apertus.org/AXIOM-Beta/snapshots/portraits/portrait-gainx2-offset2047-20ms-02.raw12), 4096x3072, 12bit, color sensor with bayer color filter array) # Save one of the Bayer channels (any of them) as a grayscale 8-bit PNG using the LodePNG library # Bonus points if your application runs on the [AXIOM Beta firmware in QEMU](https://github.com/apertus-open-source-cinema/axiom-beta-qemu). (this is optional) **Collected information:** - RAW12: https://wiki.apertus.org/index.php/RAW12 - Bayer Pattern: https://en.wikipedia.org/wiki/Bayer_filter - 12bit conversion: https://stackoverflow.com/questions/33768206/convert-2-bytes-into-12-bit-number - 12bit conversion (SIMD not required): https://stackoverflow.com/questions/15443868/fastest-way-to-convert-12bit-image-to-16bit-image - [Processing RAW images in MATLAB](https://rcsumner.net/raw_guide/RAWguide.pdf) (useful as overview; we are not asking for color-correct output)

Please complete this task as part of your GSoC 2018 application when applying for matching ideas. This challenge is mandatory if you apply for T720, T763 or T722. For FPGA-related tasks, please complete the [FPGA challenge](https://lab.apertus.org/T871) instead. --- 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](http://lodev.org/lodepng/) to create a viewable PNG image. # Create a simple C/C++ console application using the development environment of your choice # Add lodepng.c/cpp and lodepng.h from the [LodePNG website](http://lodev.org/lodepng/) to your project / Makefile / whatever you use # Read image data from a RAW12 file (sample file: [portrait-gainx2-offset2047-20ms-02.raw12](http://files.apertus.org/AXIOM-Beta/snapshots/portraits/portrait-gainx2-offset2047-20ms-02.raw12), 4096x3072, 12bit, color sensor with bayer color filter array) # Save one of the Bayer channels (any of them) as a grayscale 8-bit PNG using the LodePNG library # Bonus points if your application runs on the [AXIOM Beta firmware in QEMU](https://github.com/apertus-open-source-cinema/axiom-beta-qemu). (this is optional) **Collected information:** - RAW12: https://wiki.apertus.org/index.php/RAW12 - Bayer Pattern: https://en.wikipedia.org/wiki/Bayer_filter - 12bit conversion: https://stackoverflow.com/questions/33768206/convert-2-bytes-into-12-bit-number - 12bit conversion (SIMD not required): https://stackoverflow.com/questions/15443868/fastest-way-to-convert-12bit-image-to-16bit-image - [Processing RAW images in MATLAB](https://rcsumner.net/raw_guide/RAWguide.pdf) (useful as overview; we are not asking for color-correct output)