exr2uhdr

exr2uhdr is a tool for converting EXR files to gainmap.js Ultra HDR files.

Unlike the free online encoder, this tool operates from the command line without requiring a browser.

Installation

These instructions are for a UNIX system.

1. Make sure Git, CMake, Python 3 and PIP are installed on your system.
2. Install libultrahdr:

• Clone the repository:

  git clone --depth 1 --branch [tag] https://github.com/google/libultrahdr libultrahdr-[tag]
  

• Configure the project:

  cd libultrahdr-[tag]
  mkdir build
  cd build
  cmake .. -DUHDR_WRITE_XMP=1
  cd ..
  

• Build the project:

  cmake --build build
  

• Install the library:

  sudo cmake --build build --target install
  export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib/
  

3. Install Python dependencies:

   pip install -r tools/requirements.txt

4. Run the tool:

   python exr2uhdr.py -h