Commit Graph

24915 Commits

Author SHA1 Message Date
Maksim Shabunin
7d12392a7d imgproc: remove C-API leftovers 2024-07-29 13:23:30 +03:00
Alexander Smorkalov
672a662dff Merge branch 4.x 2024-07-26 09:10:36 +03:00
Alexander Smorkalov
eab21b6106
Merge pull request #25814 from sturkmen72:numFrames
add getFrameCount() member function to BaseImageDecoder
2024-07-24 17:13:15 +03:00
Alexander Smorkalov
c5de090964
Merge pull request #25944 from vrabaud:depth_check
Avoid future integer overflow in _OutputArray::create
2024-07-24 16:38:42 +03:00
Alexander Smorkalov
459a9c60ed
Merge pull request #25902 from asmorkalov:as/core_mask_cvbool
Mask support with CV_Bool in ts and core #25902

Partially cover https://github.com/opencv/opencv/issues/25895

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake
2024-07-24 16:32:25 +03:00
武士风度的牛
160879c100
Merge pull request #25807 from spdfghi:4.x
Search in two directions when try to add new quad in addOuterQuad #25807

In ChessBoardDetector::addOuterQuad, previous code try to connect new quad with inner quad, if possible, but only search for one direction. I have made  three test images, one is normal(a.jpg), one lossed an outer quad(b.jpg), and then i flipped it vertically(c.jpg). Only last one fails. I fixed it by check two directions and row/col.

Here is the test code and images:
```
Mat img;
vector<Point2f> corners;
auto size = cv::Size(6, 6);
img = imread("D:/tmp/a.jpg", 0);
std::cout<<cv::findChessboardCorners(img, size, corners)<<"\n";
std::cout << corners.size() << "\n";
img = imread("D:/tmp/b.jpg", 0);
std::cout<<cv::findChessboardCorners(img, size, corners)<<"\n";
std::cout << corners.size() << "\n";
img = imread("D:/tmp/c.jpg", 0);
std::cout<<cv::findChessboardCorners(img, size, corners)<<"\n";
std::cout << corners.size() << "\n";
```
![a](https://github.com/opencv/opencv/assets/92856207/0dc7f5bf-7637-4333-9a9f-ec4ede790027)
a
![b](https://github.com/opencv/opencv/assets/92856207/39793485-ca0c-44c0-b44d-a593d36c1888)
b
![c](https://github.com/opencv/opencv/assets/92856207/2e7789c8-cfa5-438c-9530-2862a8a3741f)
c
2024-07-24 15:29:13 +03:00
Vincent Rabaud
c16927605d
Merge pull request #25938 from vrabaud:charuco
Properly check markers when none are provided. #25938

CharucoDetectorImpl::detectBoard finds temporary markers when none are provided but those are discarded when
charucoDetectorImpl::checkBoard is called.

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [x] The feature is well documented and sample code can be built with the project CMake
2024-07-24 09:27:07 +03:00
Vincent Rabaud
e1b57057bf Avoid future integer overflow in _OutputArray::create
This fix is useless in 4.x and fixes harmless overflows in 5.x
This belongs to 4.x as it is closer to the intended meaning.
2024-07-23 16:22:55 +02:00
Alexander Smorkalov
38cfea981f Report used HAL to test log and xml 2024-07-23 12:03:39 +03:00
Rostislav Vasilikhin
44c814e334
Merge pull request #25936 from savuor:rv/hal_dot
HAL for dot product added #25936

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [ ] There is a reference to the original bug report and related work
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      Patch to opencv_extra has the same branch name.
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2024-07-23 08:06:15 +03:00
cudawarped
c9b57819b1
Merge pull request #25874 from cudawarped:videoio_ffmpeg_fix_encapsulate_ts
videoio: fix cv::VideoWriter with FFmpeg encapsulation timestamps #25874

Fix https://github.com/opencv/opencv/issues/25873 by modifying `cv::VideoWriter` to use provided presentation indices (pts).

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [x] The feature is well documented and sample code can be built with the project CMake
2024-07-22 17:41:39 +03:00
Yuantao Feng
23b244d3a3
Merge pull request #25881 from fengyuentau:dnn/cpu/optimize_activations_with_v_exp
dnn: optimize activations with v_exp #25881

Merge with https://github.com/opencv/opencv_extra/pull/1191.

This PR optimizes the following activations:

- [x] Swish
- [x] Mish
- [x] Elu
- [x] Celu
- [x] Selu
- [x] HardSwish

### Performance (Updated on 2024-07-18)

#### AmLogic A311D2 (ARM Cortex A73 + A53)

```
Geometric mean (ms)

            Name of Test              activations activations.patch activations.patch
                                                                              vs
                                                                         activations
                                                                          (x-factor)
Celu::Layer_Elementwise::OCV/CPU        115.859          27.930              4.15
Elu::Layer_Elementwise::OCV/CPU          27.846          27.003              1.03
Gelu::Layer_Elementwise::OCV/CPU         0.657           0.602               1.09
HardSwish::Layer_Elementwise::OCV/CPU    31.885          6.781               4.70
Mish::Layer_Elementwise::OCV/CPU         35.729          32.089              1.11
Selu::Layer_Elementwise::OCV/CPU         61.955          27.850              2.22
Swish::Layer_Elementwise::OCV/CPU        30.819          26.688              1.15
```

#### Apple M1

```
Geometric mean (ms)

               Name of Test                activations activations.patch activations.patch
                                                                                   vs
                                                                              activations
                                                                               (x-factor)
Celu::Layer_Elementwise::OCV/CPU              16.184          2.118               7.64
Celu::Layer_Elementwise::OCV/CPU_FP16         16.280          2.123               7.67
Elu::Layer_Elementwise::OCV/CPU               9.123           1.878               4.86
Elu::Layer_Elementwise::OCV/CPU_FP16          9.085           1.897               4.79
Gelu::Layer_Elementwise::OCV/CPU              0.089           0.081               1.11
Gelu::Layer_Elementwise::OCV/CPU_FP16         0.086           0.074               1.17
HardSwish::Layer_Elementwise::OCV/CPU         1.560           1.555               1.00
HardSwish::Layer_Elementwise::OCV/CPU_FP16    1.536           1.523               1.01
Mish::Layer_Elementwise::OCV/CPU              6.077           2.476               2.45
Mish::Layer_Elementwise::OCV/CPU_FP16         5.990           2.496               2.40
Selu::Layer_Elementwise::OCV/CPU              11.351          1.976               5.74
Selu::Layer_Elementwise::OCV/CPU_FP16         11.533          1.985               5.81
Swish::Layer_Elementwise::OCV/CPU             4.687           1.890               2.48
Swish::Layer_Elementwise::OCV/CPU_FP16        4.715           1.873               2.52
```

#### Intel i7-12700K

```
Geometric mean (ms)

            Name of Test              activations activations.patch activations.patch
                                                                    vs
                                                               activations
                                                                (x-factor)
Celu::Layer_Elementwise::OCV/CPU        17.106       3.560         4.81
Elu::Layer_Elementwise::OCV/CPU          5.064       3.478         1.46
Gelu::Layer_Elementwise::OCV/CPU         0.036       0.035         1.04
HardSwish::Layer_Elementwise::OCV/CPU    2.914       2.893         1.01
Mish::Layer_Elementwise::OCV/CPU         3.820       3.529         1.08
Selu::Layer_Elementwise::OCV/CPU        10.799       3.593         3.01
Swish::Layer_Elementwise::OCV/CPU        3.651       3.473         1.05
```

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
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2024-07-19 16:03:19 +03:00
Alexander Smorkalov
26714f9a34
Merge pull request #25905 from tintou:tintou/glib-cleanup
highgui: Make GThread mandatory with GTK
2024-07-19 14:42:32 +03:00
Vincent Rabaud
b8f5c08306 Fix "'/*' within block comment " warning 2024-07-19 13:03:48 +02:00
HAN Liutong
b5ea32158a
Merge pull request #25883 from hanliutong:rvv-intrin-upgrade
Upgrade RISC-V Vector intrinsic and cleanup the obsolete RVV backend. #25883

This patch upgrade RISC-V Vector intrinsic from `v0.10` to `v0.12`/`v1.0`:
- Update cmake check and options;
- Upgrade RVV implement for Universal Intrinsic;
- Upgrade RVV optimized DNN kernel.
- Cleanup the obsolete RVV backend (`intrin_rvv.hpp`) and compatable header file.

With this patch, RVV backend require Clang 17+ or GCC 14+ (which means `__riscv_v_intrinsic >= 12000`, see https://godbolt.org/z/es7ncETE3)

This patch is test with Clang 17.0.6 (require extra `-DWITH_PNG=OFF` due to ICE), Clang 18.1.8 and GCC 14.1.0 on QEMU and k230 (with `--gtest_filter="*hal_*"`).

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [ ] The PR is proposed to the proper branch
- [ ] There is a reference to the original bug report and related work
- [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
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2024-07-19 11:41:42 +03:00
_Ayaka
4dd54bbec9
Merge pull request #25898 from Octopus136:issue-25853
Add a check for src == dst in ocl warpTransform #25898

As mentioned in #25853, when doing WarpAffine with Mat and UMat respectively, if you force the use of the in-place operation (so that src and dst are passed the same variables), Mat produces the correct results, but UMat produces unexpected results.

Obviously in-place operations are not possible with this transformation. When Mat performs the operation, if dst and src are the same variable, the function inherently makes a copy of src without telling the user. 

74b50c7af0/modules/imgproc/src/imgwarp.cpp (L2831-L2834)

So I did the same check in UMat, but I'm not sure if it's appropriate, should we just do a copy operation without telling the user (even if the user thinks he's doing an in-place operation), or should we throw an exception to indicate that we shouldn't pass in two same variables here?

The possible reason for this problem is that there is a create function here, so it gives the developer the false impression that this create function has allocated new memory for dst, however it does not.

74b50c7af0/modules/imgproc/src/imgwarp.cpp (L2607-L2609)

Because by the time the check is done here, the function has returned back.

74b50c7af0/modules/core/src/umatrix.cpp (L668-L675)

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [x] The feature is well documented and sample code can be built with the project CMake
2024-07-19 09:08:19 +03:00
zihaomu
1125755345
Merge pull request #25931 from zihaomu:clean_code
code clean #25931

Align code and remove redundant CMake code

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [ ] There is a reference to the original bug report and related work
- [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake
2024-07-18 17:18:37 +03:00
Abduragim Shtanchaev
88f05e49be
Merge pull request #25868 from Abdurrahheem:ash/add-gpt2-sample
Add sample for GPT2 inference #25868

### Pull Request Readiness Checklist

This PR adds sample for inferencing GPT-2 model. More specificly implementation of GPT-2 from [this repository](https://github.com/karpathy/build-nanogpt). Currently inference in OpenCV is only possible to do with fixed window size due to not supported dynamic shapes. 

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [ ] There is a reference to the original bug report and related work
- [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [x] The feature is well documented and sample code can be built with the project CMake
2024-07-18 16:47:12 +03:00
Alexander Smorkalov
0020831414
Merge pull request #25927 from yeatse:fix-swift-name
Resolve Swift method name conflicts by adding missing namespace
2024-07-18 11:17:49 +03:00
Alexander Smorkalov
0c2da1dc9b
Merge pull request #25914 from r-barnes:4.x
throw() -> noexcept
2024-07-17 19:21:16 +03:00
Yang Chao
bcce38c05a
fix: resolve Swift method name conflicts by adding missing namespace 2024-07-18 00:20:17 +08:00
Abduragim Shtanchaev
060c24bec9
Merge pull request #25101 from Abdurrahheem:ash/1D-reduce-test
1D test for Reduce layer #25101

This PR introduces test for `Reduce` layer to test its functionality for 1D arrays

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
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2024-07-17 19:19:18 +03:00
Abduragim Shtanchaev
d05047ae41
Merge pull request #25917 from Abdurrahheem:ash/reduce-parser-fix
Fix Reduce layer for cosnt inputs #25917

### Pull Request Readiness Checklist

This PR adds support for const inputs for reducing the layer. Particularly, it fixes the following case. The test model and data are located in [1194](https://github.com/opencv/opencv_extra/pull/1194)

<img width="190" alt="image" src="https://github.com/user-attachments/assets/45a90f0a-b798-4529-bece-24c7bfc9e7ba">


See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
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2024-07-17 19:17:44 +03:00
Alexander Smorkalov
fc9208cff5 Merge branch 4.x 2024-07-17 10:08:16 +03:00
Richard Barnes
d1505693dd throw() -> noexcept 2024-07-16 06:36:52 -07:00
Alexander Smorkalov
53a5b85d9f
Merge pull request #25913 from asmorkalov:as/chessboard_debug_logs
Use CV_LOG_DEBUG for debug logging in chessboard detector.
2024-07-16 08:28:28 +03:00
Alexander Smorkalov
7b176d898b
Merge pull request #25912 from asmorkalov:as/round_pair_f64_restore
Restored removed test_round_pair_f64 test after PR 24941
2024-07-15 20:30:49 +03:00
Alexander Smorkalov
9ebf387850
Merge pull request #25911 from asmorkalov:as/HAL_fast_GaussianBlur
Post-merge fixes for algorithm hint API
2024-07-15 20:30:24 +03:00
Corentin Noël
da078c4b75 highgui: Make GThread mandatory with GTK
The GThread API is available since more than 11 years with GLib, it is now safe
to assume that it is always available.
2024-07-15 16:30:39 +02:00
Yoshiki Obinata
4842043c6a
Merge pull request #25822 from mqcmd196:gtk3-gl-support
Support OpenGL GTK3 New API #25822

Fixes #20001

GSoC2024 Project

### Pull Request Readiness Checklist

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- [x] I agree to contribute to the project under Apache 2 License.
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- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
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      Patch to opencv_extra has the same branch name.
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2024-07-15 17:06:30 +03:00
Alexander Smorkalov
c53c2f6844 Use CV_LOG_DEBUG for debug logging in chessboard detector. 2024-07-15 16:11:27 +03:00
j3knk
e90935e81c
Merge pull request #25824 from j3knk:calib3d/fix_projectpoints
calib3d: fix Rodrigues CV_32F and CV_64F type mismatch in projectPoints #25824

Fixes #25318

### Pull Request Readiness Checklist

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2024-07-15 15:10:08 +03:00
Alexander Smorkalov
a6b8ea892b Post-merge fixes for algorithm hint API. 2024-07-15 14:44:03 +03:00
Alexander Smorkalov
04f9e3cd4f Restored removed test_round_pair_f64 test afetr PR 24941. 2024-07-15 12:59:12 +03:00
Yuantao Feng
420663498f
Merge pull request #25900 from fengyuentau:dnn/nary_elementwise_multi_thread
dnn: merge #25630 to 5.x #25900

Sync changes from https://github.com/opencv/opencv/pull/25630 to 5.x.

### Pull Request Readiness Checklist

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- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
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      Patch to opencv_extra has the same branch name.
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2024-07-15 08:57:50 +03:00
Kumataro
e906f0f3b3 core: hal: disable _tzcnt_u32 for ARM64EC 2024-07-13 11:16:45 +09:00
Alexander Smorkalov
15783d6598
Merge pull request #25792 from asmorkalov:as/HAL_fast_GaussianBlur
Added flag to GaussianBlur for faster but not bit-exact implementation #25792

Rationale:
Current implementation of GaussianBlur is almost always bit-exact. It helps to get predictable results according platforms, but prohibits most of approximations and optimization tricks.

The patch converts `borderType` parameter to more generic `flags` and introduces `GAUSS_ALLOW_APPROXIMATIONS` flag to allow not bit-exact implementation. With the flag IPP and generic HAL implementation are called first. The flag naming and location is a subject for discussion.

Replaces https://github.com/opencv/opencv/pull/22073
Possibly related issue: https://github.com/opencv/opencv/issues/24135

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [ ] There is a reference to the original bug report and related work
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      Patch to opencv_extra has the same branch name.
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2024-07-12 15:03:33 +03:00
Vincent Rabaud
3ff97c5580
Merge pull request #25899 from vrabaud:move_no_except
Mark cv::Mat(Mat&&) as noexcept #25899

This fixes https://github.com/opencv/opencv/issues/25065

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
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2024-07-12 14:41:17 +03:00
lamiayous
78195bc3df
Merge pull request #25817 from lamiayous:ly/extend_onnxrt_gapi_backend_handle_i32_i64_type
Handling I32/I64 data types in G-API ONNX back-end #25817

### Pull Request Readiness Checklist

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- [ ] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [ ] The PR is proposed to the proper branch
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- [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake
2024-07-12 11:38:43 +03:00
Gursimar Singh
9aa5f3f1db
Merge pull request #25252 from gursimarsingh:cpp_samples_cleanup
Move API focused C++ samples to snippets #25252

Clean Samples #25006
This PR removes 39 outdated C++ samples from the project, as part of an effort to keep the codebase clean and focused on current best practices.
2024-07-11 15:07:21 +03:00
Alexander Smorkalov
c6ace77e21
Merge pull request #25893 from fengyuentau:core/fix_v_erf
core: fix compilation problem with v_erf
2024-07-11 12:57:18 +03:00
Suleyman TURKMEN
63b9cbc2d0 Update imgcodecs.hpp 2024-07-10 15:24:37 +03:00
Alexander Smorkalov
7dcc305301
Merge pull request #25894 from mshabunin:fix-test-templ-match
imgproc: reduce template sizes in templMatch test
2024-07-10 12:40:48 +03:00
Aliaksei Urbanski
35ca2f78d6
Merge pull request #25880 from Jamim:fix/cuda-no-fp16
Fix CUDA for old GPUs without FP16 support #25880

Fixes #21461

~This is a build-time solution that reflects https://github.com/opencv/opencv/blob/4.10.0/modules/dnn/src/cuda4dnn/init.hpp#L68-L82.~
~We shouldn't add an invalid target while building with `CUDA_ARCH_BIN` < 53.~
_(please see [this discussion](https://github.com/opencv/opencv/pull/25880#discussion_r1668074505))_

This is a run-time solution that basically reverts [these lines](d0fe6ad109 (diff-757c5ab6ddf2f99cdd09f851e3cf17abff203aff4107d908c7ad3d0466f39604L245-R245)).

I've debugged these changes, [coupled with other fixes](https://github.com/gentoo/gentoo/pull/37479), on [Gentoo Linux](https://www.gentoo.org/) and [related tests passed](https://github.com/user-attachments/files/16135391/opencv-4.10.0.20240708-224733.log.gz) on my laptop with `GeForce GTX 960M`.

Alternative solution:
  - #21462

_Best regards!_

### Pull Request Readiness Checklist

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [ ] `n/a` There is accuracy test, performance test and test data in opencv_extra repository, if applicable
- [ ] `n/a` The feature is well documented and sample code can be built with the project CMake
2024-07-10 12:39:30 +03:00
Maksim Shabunin
06b9db6a71 imgproc: reduce template sizes in templMatch test 2024-07-10 11:06:25 +03:00
fengyuentau
11fde3bb89 fix 2024-07-10 14:48:45 +08:00
Mironov Arseny
b964943517
Merge pull request #25607 from Fest1veNapkin:imgproc_approx_bounding_poly
Add a new function that approximates the polygon bounding a convex hull with a certain number of sides #25607

merge PR with <https://github.com/opencv/opencv_extra/pull/1179>

This PR is based on the paper [View Frustum Optimization To Maximize Object’s Image Area](https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=1fbd43f3827fffeb76641a9c5ab5b625eb5a75ba).

# Problem
I needed to reduce the number of vertices of the convex hull so that the additional area was minimal, andall vertices of the original contour enter the new contour.

![image](https://github.com/Fest1veNapkin/opencv/assets/98156294/efac35f6-b8f0-46ec-91e4-60800432620c)

![image](https://github.com/Fest1veNapkin/opencv/assets/98156294/2292d9d7-1c10-49c9-8489-23221b4b28f7)

# Description
Initially in the contour of n vertices, at each stage we consider the intersection points of the lines formed by each adjacent edges. Each of these intersection points will form a triangle with vertices through which lines pass. Let's choose a triangle with the minimum area and merge the two vertices at the intersection point. We continue until there are more vertices than the specified number of sides of the approximated polygon.
![image](https://github.com/Fest1veNapkin/opencv/assets/98156294/b87b21c4-112e-450d-a776-2a120048ca30)

# Complexity:
Using a std::priority_queue or std::set  time complexity is **(O(n\*ln(n))**, memory **O(n)**,
n - number of vertices in convex hull.

count of sides - the number of points by which we must reduce.
![image](https://github.com/Fest1veNapkin/opencv/assets/98156294/31ad5562-a67d-4e3c-bdc2-29f8b52caf88)

## Comment
If epsilon_percentage more 0, algorithm can return more values than _side_.
Algorithm returns OutputArray. If OutputArray.type() equals 0, algorithm returns values with InputArray.type().
New test uses image which are not in opencv_extra, needs to be added.

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [ ] I agree to contribute to the project under Apache 2 License.
- [ ] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [ ] The PR is proposed to the proper branch
- [ ] There is a reference to the original bug report and related work
- [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake
2024-07-09 17:11:23 +03:00
Sourav Kumar
e962395565
Update imgcodecs.hpp 2024-07-09 06:53:16 +05:30
Yuantao Feng
e3858cc5a3
Merge pull request #25147 from fengyuentau:dnn/elementwise_layers/speedup
* added v_erf and implemented gelu acceleration via vectorization

* remove anonymous v_erf and use v_erf from intrin_math

* enable perf for ov and cuda backend
2024-07-08 14:24:36 +03:00
Dmitry Yurov
31b308f882
Merge pull request #25808 from DmitryYurov:bug-25806-checkerboard-marker-black-tile
Enable checkerboard detection with a central / corner marker on a black tile #25808

This pull request closes the issue #25806.

The issue doesn't require any documentation - it's quite intuitive that the detection result shouldn't depend on the color of the marker's tile.

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake
2024-07-08 12:36:56 +03:00