On 08/08/2019 14:24, Jarek Samic wrote: > --- > > This filter is the subject of my GSoC project. > > This is a video stabilization / deshake filter (name undetermined, feel free > to discuss) that uses feature > point matching and RANSAC to determine a camera path, smooths the camera path > with a gaussian filter, and > then applies the new path to the video. > > There are a number of debug features that can be turned on (viewing point > matches, viewing transform > details, viewing average kernel execution times). See the bottom of the file. > > Since the last version of the patch, I have: > > * Greatly improved the performance of the match_descriptors kernel > * Also improved the performance of various other kernels / buffer reads > with the same change > * Tested the filter on the Intel OpenCL drivers > * For some reason OpenCL compilation warnings get displayed to the user > on this platform; if anyone knows how to fix that, please let me know > > Performance of the harris_response kernel still leaves something to be > desired, but I am out of ideas currently to improve it. I am fairly certain > it is simply caused by poor memory access patterns, but I haven't been able > to find any functioning OpenCL profiling tools so I don't have any way > of confirming that. In any case, even in its current state, the filter is > faster than the existing deshake filter on both my NVIDIA GPU and my > Intel iGPU with improved output quality. > > At this point the filter is ready to be merged (as the end of GSoC is drawing > near). If anyone has a few minutes to spare, please take the time > to give this filter a try and report any bugs / issues (there is only time > left to fix major, blocking bugs at this point, such as crashes and > malformed output, but other issues are always great for future work). > > configure | 1 + > doc/filters.texi | 69 + > libavfilter/Makefile | 2 + > libavfilter/allfilters.c | 1 + > libavfilter/opencl/deshake.cl | 647 +++++++++ > libavfilter/opencl_source.h | 1 + > libavfilter/vf_deshake_opencl.c | 2202 +++++++++++++++++++++++++++++++ > 7 files changed, 2923 insertions(+) > create mode 100644 libavfilter/opencl/deshake.cl > create mode 100644 libavfilter/vf_deshake_opencl.c
Everything LGTM, and I did a load more testing (Intel and Mali). I fixed two unwanted doubles, added version bump, and applied. Thanks, - Mark _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
