I took the "improved dense trajectories" code and made small modifications to make it compatible with OpenCV 4.0. To see the readme of the original code, see the original-README file.
The code requires OpenCV (with OpenCV-contrib) and ffmpeg to be installed. First, install ffmpeg.
To install OpenCV, you could refer to the official website's instructions, however, the following instructions should work, too:
apt-get install build-essential
apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-devdownload OpenCV download OpenCV-contrib
cd <path to OpenCV>
mkdir build
cd build
cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/usr/local -DOPENCV_EXTRA_MODULES_PATH=<path to OpenCV-contrib>/modules
-OPENCV_ENABLE_NONFREE .. && make -j4If the above make fails, the following may help:
If the file /etc/ld.so.conf.d/opencv.conf and its parent folder don't exist, create them:
mkdir /etc/ld.so.conf.d
touch /etc/ld.so.conf.d/opencv.confthen:
echo /usr/local/lib >> /etc/ld.so.conf.d/opencv.conf
make clean && make -j4Improved dense trajectories for OpenCV 4.0, based on the "improved dense trajectories" code. Copyright (C) 2020 Mehrin Saremi
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/.