ffmpeg | branch: master | Timo Rothenpieler <t...@rothenpieler.org> | Sat Sep 3 20:02:03 2022 +0200| [6512dd6cb528a261369284f2634c0856fdaffaf9] | committer: Timo Rothenpieler
avfilter/vf_bilateral_cuda: refactor use of pow to simple multiplication > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6512dd6cb528a261369284f2634c0856fdaffaf9 --- libavfilter/vf_bilateral_cuda.cu | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/libavfilter/vf_bilateral_cuda.cu b/libavfilter/vf_bilateral_cuda.cu index bbcfc81db5..7d6cc14c0a 100644 --- a/libavfilter/vf_bilateral_cuda.cu +++ b/libavfilter/vf_bilateral_cuda.cu @@ -33,11 +33,10 @@ extern "C" */ __device__ static inline float norm_squared(float4 first_yuv, float4 second_yuv) { - float ans = 0; - ans += __powf(first_yuv.x - second_yuv.x, 2); - ans += __powf(first_yuv.y - second_yuv.y, 2); - ans += __powf(first_yuv.z - second_yuv.z, 2); - return ans; + float x = first_yuv.x - second_yuv.x; + float y = first_yuv.y - second_yuv.y; + float z = first_yuv.z - second_yuv.z; + return (x*x) + (y*y) + (z*z); } /** @@ -52,7 +51,7 @@ __device__ static inline float calculate_w(int x, int y, int r, int c, float sigma_space, float sigma_color) { float first_term, second_term; - first_term = (__powf(x - r, 2) + __powf(y - c, 2)) / (2 * sigma_space * sigma_space); + first_term = (((x - r) * (x - r)) + ((y - c) * (y - c))) / (2 * sigma_space * sigma_space); second_term = norm_squared(pixel_value, neighbor_value) / (2 * sigma_color * sigma_color); return __expf(-first_term - second_term); } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
