File list (Check if you may need any files):
hs
..\@hs_optical_flow
..\................\private
..\................\.......\subsample_images.m
..\................\.......\warp_images.m
..\................\.......\resample_flow.m
..\................\.......\compute_image_pyramid.m
..\................\hs_optical_flow.m
..\................\parse_input_parameter.m
..\................\display.m
..\................\subsasgn.m
..\................\subsref.m
..\................\flow_operator.m
..\................\compute_flow.m
..\................\compute_flow_base.m
..\................\evaluate_log_posterior.m
..\................\flow_operator_test.m
..\copyrights.txt
..\readme.txt
..\estimate_flow_demo.m
..\utils
..\.....\flowColorCode
..\.....\.............\README.txt
..\.....\.............\colorTest.m
..\.....\.............\computeColor.m
..\.....\.............\flowToColor.m
..\.....\.............\readFlowFile.m
..\.....\.............\writeFlowFile.m
..\.....\flowAngErr.m
..\.....\interp2_bicubic.m
..\.....\partial_deriv.m
..\.....\make_imfilter_mat.m
..\.....\imfiltermtx.m
..\.....\make_convn_mat.m
..\.....\convmtxn.m
..\.....\plotflow.m
..\.....\partial_deriv_new.m
..\data
..\....\other-data
..\....\..........\RubberWhale
..\....\..........\...........\frame10.png
..\....\..........\...........\frame11.png
..\....\other-data-gray
..\....\...............\RubberWhale
..\....\...............\...........\frame10.png
..\....\...............\...........\frame11.png
..\....\other-gt-flow
..\....\.............\RubberWhale
..\....\.............\...........\flow10.flo
..\estimate_flow_hs.m