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Visually Imbalanced Stereo Matching

This repository contains code for the paper: Visually Imbalanced Stereo Matching.

If you find the work useful please consider citing our paper

@InProceedings{VISM_Liu_2020,
  title = {Visually Imbalanced Stereo Matching},
  author = {Liu, Yicun and Ren, Jimmy and Zhang, Jiawei and Liu, Jianbo and Lin, Mude},
  booktitle = {IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)},
  month = {June},
year = {2020}}

Installation

The code is built on torch-0.4.0 and torchvision-0.2.0. The code also requires compiling a customized CUDA kernel which is based on cuda-8.0. We encourage you to create a virtual environment with Virtualenv or Anaconda

Once you have cloned the repository, cd to the root directory and 👇

1. Install dependencies.

   pip install -r requirements.txt 
   

2. Compile the customized CUDA kernels. The Dynamic Displacement Filter described in the paper is implemented with our own customized kernel. You'll be needing PyTorch 0.4.0 and cuda-8.0.

   bash install.sh
   

3. Download pre-trained models of view restoration network from [GoogleDrive] and unzip them under the Visually-Imabalanced-Stereo folder. You should expect KPN.pth in the root directory. The models serve as pre-trained models for dynamic filters and pre-trained models to compute the preceptual loss.

4. Optional. Prepare the stereo matching network following instruction at CRL. The output of View Synthesis Network will be used for Stereo Matching

Inferencing a single image

This repository contains a toy KITTI dataset. To run inference for a single pair stereo images. 👇

bash run.sh

You should expect average PSNR and average SSIM as your output, as well as saved output images.

Reproducing KITTI Results

To produce the experiment results in the paper. You'll need to prepare KITTI Stereo 2015 dataset. You'll need to download the prepared dataset from GoogleDrive, or from the official Kitti website. You should perserve your folder sturcture like this:

dataset\
   |--data_scene_flow
         |---test
         |---train

To reproduce the inference of view synthesis network. You'll need to modify --scale_factor from 1 to 5, 10, 20 to see the performance under different imbalance factor.

python train.py 
         --only_test 1 
         --input_nc 3 
         --dataset data_scene_flow 
         --gpu_num 1 
         --loss Smooth-L1 
         --batchSize 1 
         --testBatchSize 1 
         --loading_weights 1 
         --scale_factor 2 \
         --filter_size_horizontal 201 
         --filter_size_vertical 0  
         --image_width 1242 
         --image_height 375 
         --weight_source ours

Trouble Shooting

We acknowledge that the code is slightly old. Error could easily arise from using the compiled CUDA kernel. We provide a troubleshooting to solve the error that you could face in Here