NPRC24 / PolyuColor /README.md
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Team: play1play

for 'Night Photography Rendering Challenge'

This repo contains the source code of Night Photography Rendering Challenge 2024.

How to run

Run without Docker

  • Install python >= 3.9
  • Install the required packages: pip install -r requirements.txt
  • Put the test images in the data folder or specify the input image path with -p option.
  • Run the script:
python run.py -p <input_image_path> -o <output_image_path>
  • The output images will be saved in the output folder or specifiy the output path with -o option.

Run with Docker

  • Build the docker image from beginning (optional):
docker build -t play1play .
  • Run the docker container with gpu on linux:
docker run -it --rm --gpus=all -v $(pwd)/data:/data play1play ./run.sh

Do not forget to to --gpus flag, our model requires GPU to run.

Update

2024.3.21:

Final version v3.0 is released for 3rd validation!

Key features:

  • Utilize the patch-based and calibration-based white-balance algorithm to improve the image quality.
  • Modify the resizing strategy to improve the image quality.

2024.3.16:

Release v2.0 for 3rd validation!

Key features:

  • Increase the overall saturation and brightness of the image.
  • Add more contrast to the image.
  • Add more dynamic range to the image.

Algorithm changes:

  • Add luma shading correction (LSC) module
  • Add auto-contrast module (dynamic gamma)
  • LSC, LTM, auto-contrast module can dynamiclly adjust the parameters based on the camera gain from the metadata.
  • Add another white-balance process at the end of the pipeline to further improve the image quality.

Key algorithm parameter explanation:

  • k_th: defines the threshold for the noise level, higher means tolerant to noise, lower means more sensitive to noise. For this sensor, default is 2.5e-3. Note that this paramerts are shared by all the modules, and hence defined as the member varibale in RawProcessingPipelineDemo class.
  • s of local_tone_mapping: defines how to apply the gain map to different image channels. Higher means more saturated, lower means less saturated. Default is 0.7. Currently, s is automatically adjusted based on the camera gain from the metadata.

2024.3.7:

release v1.0 for 3rd validation!


Version-1

  • TMO-ratio50

Version-2

  • TMO: ratio50

  • Gamma: 1.5

  • Contrast:[low=2,high=0.2]

  • Post-AWB: GI