On Sun, May 12, 2019 at 10:47 PM Paul B Mahol <one...@gmail.com> wrote:
> On 5/8/19, Song, Ruiling <ruiling.s...@intel.com> wrote: > > > > > >> -----Original Message----- > >> From: ffmpeg-devel [mailto:ffmpeg-devel-boun...@ffmpeg.org] On Behalf > >> Of Dylan Fernando > >> Sent: Tuesday, May 7, 2019 8:27 AM > >> To: ffmpeg-devel@ffmpeg.org > >> Subject: Re: [FFmpeg-devel] [PATCHv2] lavfi: add gblur_opencl filter > >> > >> Anyone have any comments/feedback? > > I think unsharp_opencl with a negative amount should do similar thing as > > this one. > > Not really. > > > What's the difference? Better quality? or better speed? > > This one can blur image with larger radius. > > But why step parameter was removed? > _______________________________________________ > 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". This one doesn't use a Gaussian approximation, it uses a Gaussian kernel calculated with: matrix_horiz[i] = (1 / sqrt(2 * 3.14159*pow(s->sigma, 2)))*exp(-(pow(x, 2) / (2 * pow(s->sigma, 2)))) with kernel size 6 * sigma. Should there be a parameter for adjusting the kernel size? _______________________________________________ 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".
