Taming Lookup Tables for Efficient Image Retouching

Paper

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TODO

• Add training code and config files
• Add LUT and inference code

Requirements and Dependencies

• python==3.7
• cuda==11.1
• numpy==1.21.5
• torch==1.8.0
• torchvision==0.9.0
• opencv-python==4.5.5.62
• matplotlib==3.5.1
• scipy==1.7.3
• GPU: NVIDIA GeForce RTX 3090
• CPU: Intel(R) Xeon(R) Platinum

How to run the codes

1. Install the tilinear interpolation package

1.1 For GPU User

• Check your cuda version

    $ls /usr/local/

• Change the cuda path in your setting

    $cd trilinear_cpp
    $vim setup.sh

    export CUDA_HOME=/usr/local/your_cuda_version && python setup.py install

• Install the package

    $sh setup.sh

1.2 For CPU User

• Install the package

    $cd trilinear_cpp
    $python setup.py

ATTENTION: If you follow the CPU install instruction with the GPU in your device, the default programme will still install the GPU version. If you want to only install the CPU version, please follow this step:

• Check the setup.py codes

    $vim setup.py

• Substitute the codes

    # line 5
    if torch.cuda.is_available():

    # substitute line 5 with :
    # if False

2. Inference the demo images

    $python inference_demo.py

3. Optional: Check the retouched results

The retouched images will be saved in the default dir: ./test_image_output

4. Optional: Check the total LUT size

cd ./ICELUT
du -sh *.npy

% output
52K     Basis_lut.npy
204K    classifier_int8.npy
164K    Model_lsb_fp32.npy
164K    Model_msb_fp32.npy

Note that we use 10 Basis in codes rather than 20 in the paper. So the storage could be smaller (588KB v.s. 780KB).

Acknowledgement

This project is based on CLUT. Thanks for these awesome codes!