here is the my v360 filter setting v360=input=fisheye:output=flat:ih_fov=180:iv_fov=180:h_fov=95:v_fov=90:w=%d:h=%d:roll=%d:pitch=%d:rorder=rpy . I ran some debug and found that both s->in_transform and s->out_transform were FISHEYE. Is it possible to bring the current algorithm to GPU. May I ask for documentation/article on how the algorithm works?
Vào Th 6, 29 thg 1, 2021 vào lúc 18:47 Paul B Mahol <[email protected]> đã viết: > > > On Thu, Jan 28, 2021 at 12:16 PM thông trần minh <[email protected]> > wrote: > >> Hi everyone, >> >> I'm trying to change v360 filter params such as roll, pitch at >> real-time speed. I'm using avfilter_graph_send_command() to make thing >> happen. The problem came when the image became larger (4096 × 2160 or >> larger), it took more time to init a new filter graph. I found that most >> of the time it spent on running this callback v360_slice() . Firstly, I >> thought I could vectorize two for loops inside v360_slice() but I was >> unable to understand the algorithm in it. I tried to increase the number of >> threads processing the slices but it did not work. >> I'm appreciated any advice to help me deal with it. >> > > Also you have not provided info what input/output projection you use. > > >> >> >> https://github.com/FFmpeg/FFmpeg/search?q=static+av_always_inline+int+v360_slice >> >> Regards, >> >> thongtm2 >> >> Vào Th 5, 28 thg 1, 2021 vào lúc 17:59 thông trần minh < >> [email protected]> đã viết: >> >>> Hi everyone, >>> >>> I'm trying to change v360 filter params such as roll, pitch at >>> real-time speed. I'm using avfilter_graph_send_command() to make thing >>> happen. The problem came when the image became larger, it took more time to >>> init a new filter graph. I found that most of the time it spent on running >>> this callback v360_slice() >>> >>> --------------------------------------- >>> *Full Name*: Trần Minh Thông >>> *Phone*: (+84) 38 731 0304 >>> -------------------------------------- >>> >>> _______________________________________________ >> Libav-user mailing list >> [email protected] >> https://ffmpeg.org/mailman/listinfo/libav-user >> >> To unsubscribe, visit link above, or email >> [email protected] with subject "unsubscribe". > > _______________________________________________ > Libav-user mailing list > [email protected] > https://ffmpeg.org/mailman/listinfo/libav-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe".
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