yuukicammy / proraw-converter

ProRaw Converter

This program converts ProRaw files to sRGB for the purpose of understanding the imaging pipeline of Apple ProRaw.

Requirements

• C++ compiler supporting C++17 (gcc or Clang)
• Xtensor
• Xtensor Blas
• Boost
• OpenCV

Installation

$ cd ProRawConversion
$ mkdir build
$ cd build
$ cmake ..
$ make -j

Usage

Running experiment code

$ ./experiments/my_conversion -h
The program 1) converts a ProRaw image in sRGB' color space, 2) [optional] adjusts the brightness and contrasts, 3) applys gamma correction, and then 4) saves the result in PNG format. 
If you do not want to adjust brightness and contrast, do not specify -a option or specify -a 0.
Usage:
  ProRaw Converter [OPTION...] ProRawFilePath

  -r, --raw        Save the raw image
  -d, --debug      Enable debugging. Log file is output to ../logs/.
  -a, --alpha arg  Persentage of histogram stretching in the range [0, 1] 
                   (-a 0.01 recommended). 
                   If this option is not specified, the brightness and 
                   contrast will not be adjusted. -a 0 means no brightness 
                   and contrast adjustment, -a 1 means converting to a 
                   completely black image. (default: 0.)
  -m, --measure    Measure execution speed
  -h, --help       Print usage

$ ./experiments/my_conversion -m -a 0.01 ../data/IMG_0008.DNG
Done conversion from camera native color space to sRGB'. 
 -- Run time (ms): 359.000000
Done adjusting the brightness and contrast.
 -- Run time (ms): 206.000000
Done gamma correction.
 -- Run time (ms): 199.000000
Done all conversion.
 -- Total run time (ms): 764.000000

Results

-a 0.00	-a 0.001	-a 0.005	-a 0.01	-a 0.05

License

MIT