This repository is C++ OpenCV implementation of Stereo Visual Odometry, using OpenCV calcOpticalFlowPyrLK for feature tracking.

Reference Paper: https://lamor.fer.hr/images/50020776/Cvisic2017.pdf

Demo vedio: https://www.youtube.com/watch?v=Z3S5J_BHQVw&t=17s

OpenCV 3.0
If you are not using CUDA:

sudo apt update
sudo apt install libopencv-dev 

If you use CUDA, compile and install CUDA enabled OPENCV. check InstallOPENCV.md

Tested on KITTI odometry dataset

git clone https://github.com/ZhenghaoFei/visual_odom.git

The system use Camera Parameters in calibration/xx.yaml, put your own camera parameters in the same format and pass the path when you run.

mkdir build
cd build
cmake ..
make -j4
./run /PathToKITTI/sequences/00/ ../calibration/kitti00.yaml

Thanks to temburuyk, the most time consumtion function circularMatching() can be accelerated using CUDA and greately improve the performance. 60~80 FPS on a decent NVIDIA Card. To enable GPU acceleration

1. Make sure you have CUDA compatible GPU.
2. Install CUDA, compile and install CUDA supported OpenCV
3. When compiling, use

cmake .. -DUSE_CUDA=on

4. Compile & Run

1. Monocular visual odometry algorithm

2. Matlab implementation of SOFT