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optimalbyteeandoptimalbytee c7dbb37b3c Speed up wide Motion Blur with adaptive FFT convolution (#1471)
Keep the merged upstream row kernel for shorter streaks and unsupported inputs.
Use bounded overlap-save convolution of its merged bilinear coefficients when
channel pairs, parallelism and memory estimates favor FFT. Preserve alpha cutoff
behavior, cancellation, selections and depth/model-neutral filtering.

Validate 303 algorithm tests in debug and release, plus native checks and full
image comparisons. Repeated current-upstream comparisons show 2.31x at 24 MP
and 4.15x at 1.5 MP for angle 30 / distance 1000 on the measured host.

Co-authored-by: optimalbytee <optimalbytee@users.noreply.github.com>
2026-10-09 09:02:00 +07:00
..
2026-10-08 16:38:28 -04:00