opencv_contrib

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https://github.com/google/glog?tab=readme-ov-file#google-logging-library -> https://github.com/ng-log/ng-log glog is no longer maintained and was renamed to ng-log by the original developers. opencv_contrib currently fails to build with ng-log.

lazka

modules/img_hash/src/marr_hildreth_hash.cpp: error in kernel computation ?

3

In modules/img_hash/src/marr_hildreth_hash.cpp:getMHKernel(), the line reads `kPtr[col] = (2-a)*std::exp(a/2);` While it seems it should be `kPtr[col] = (2-a)*std::exp(-a/2);` At least that's what the original code does: https://github.com/aetilius/pHash/blob/master/src/pHash.cpp#L610 ``` CImg *GetMHKernel(float alpha,...

orzel

When I scan a QR code, the app crashes java_vm_ext.cc:591] JNI DETECTED ERROR IN APPLICATION: input is not valid Modified UTF-8: illegal continuation byte 0xd0 java_vm_ext.cc:591] string: '???ı??룺TC-D00007282???ʼDZ??????/ƻ??/MacBook Pro(16.2??/M1 Max)???豸???ƣ?MacBook...

combohehe

### Environment - Hardware: Raspberry Pi 5 - Operating System: Raspberry Pi OS (Bookworm) - OpenCV Version: 4.6.0 - Python Version: 3.11 - Camera: PiCamera2 with libcamera v0.5.0, libpisp version...

jbneto1

I suggest adding support for Datacolor SpyderCheckr 24 and 48 color checkers. The official specs are available [here](https://www.datacolor.com/spyder/downloads/SpyderCheckr_Color_Data_V2.pdf). I'm assuming the 24 patch version consists of only the right half....

peterfajdiga

Color shift on cv::cudacodec::VideoReader when using multiple threads reading videos from different color spaces in parallel

1

Following latest updates to fix YUV Conversion #3828, I started to notice an issue with some video colors that is flickering. The issue only happens when launching multiple video readers...

laurentchicoine

**Description** The test Tracking/DistanceAndOverlap.MedianFlow/1 fails Windows on ARM64 when running OpenCV test suite using the run.py script. I added debug statements in modules\video\test\test_trackers.impl.hpp.  Upon running test script in x64...

pratham-mcw

Add fast grayscale morphology using sparse table data structure

1

### 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,...

kyaco

### 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,...

shyama7004

EMD L1 interpreting every input matrix as 1-dimensional data

2

I've switched over from using the CV EMD method (https://github.com/opencv/opencv/blob/4.x/modules/imgproc/src/emd.cpp) to using the EMDL1 implementation because of the massive speed benefit the paper it was based on was promising. And...

Dugnom