Extracting dense flow field given a video.

####Depencies:

• LibZip: to install on ubuntu apt-get install libzip-dev on mac brew install libzip

###Install

git clone --recursive http://github.com/yjxiong/dense_flow
mkdir build && cd build
cmake .. && make -j

###Usage

./extract_gpu -f test.avi -x tmp/flow_x -y tmp/flow_y -i tmp/image -b 20 -t 1 -d 0 -s 1 -o dir

• test.avi: input video
• tmp: folder containing RGB images and optical flow images
• dir: output generated images to folder. if set to zip, will write images to zip files instead.