Maksim Shabunin f37924796f Merge pull request #25364 from mshabunin:fix-unaligned-filter ...

imgproc: fix unaligned memory access in filters and Gaussian blur #25364

* filter/SIMD: removed parts which casted 8u pointers to int causing unaligned memory access on RISC-V platform.
* GaussianBlur/fixed_point: replaced casts from s16 to u32 with union operations

Performance comparison:
- [x] check performance on x86_64 - (4 threads, `-DCPU_BASELINE=AVX2`, GCC 11.4, Ubuntu 22) - [report_imgproc_x86_64.ods](https://github.com/opencv/opencv/files/14904702/report_x86_64.ods)
- [x] check performance on AArch64 - (4 cores of RK3588, GCC 11.4 aarch64, Raspbian) - [report_imgproc_aarch64.ods](https://github.com/opencv/opencv/files/14908437/report_aarch64.ods)

Note: for some reason my performance results are quite unstable, unaffected functions show speedups and slowdowns in many cases. Filter2D and GaussianBlur seem to be OK.

Slightly related PR: https://github.com/opencv/ci-gha-workflow/pull/165

2024-04-09 17:44:36 +03:00

..

doc

Merge pull request #25042 from mshabunin:doc-upgrade

2024-03-05 16:19:45 +03:00

include/opencv2

Merge pull request #25146 from mshabunin:cpp-contours

2024-04-09 09:37:49 +03:00

misc

Merge pull request #24234 from dkurt:distanceTransform_max_dist

2023-10-03 17:23:32 +03:00

perf

Merge pull request #24621 from chacha21:remap_relative

2024-02-28 17:20:33 +03:00

src

Merge pull request #25364 from mshabunin:fix-unaligned-filter

2024-04-09 17:44:36 +03:00

test

Merge pull request #25371 from alexlyulkov:al/adaptive-threshold-tests

2024-04-09 11:51:00 +03:00

CMakeLists.txt

Merge pull request #24179 from Kumataro:fix24145

2023-08-23 22:53:11 +03:00