55 Pull requests merged by 22 people

• Feat #25150: Pose Graph MST initialization

  #27423 merged Aug 12, 2025

• Bool masks support in imgproc module.

  #27644 merged Aug 11, 2025

• hal/riscv-rvv: implement FAST keypoint detection

  #27391 merged Aug 11, 2025

• test: gif: to test GIF codec at write_gif_flags

  #27649 merged Aug 11, 2025

• cuda 13.0 compatibility

  #27636 merged Aug 11, 2025

• Added Clip layer to new DNN engine

  #27624 merged Aug 8, 2025

• optimize some drawing with stack allocation

  #27599 merged Aug 7, 2025

• java: Set Automatic-Module-Name manifest attribute in the built JAR file

  #27577 merged Aug 7, 2025

• Update grammatical error in py_intro.markdown

  #27606 merged Aug 7, 2025

• Performance tests for writing and reading animations

  #27605 merged Aug 7, 2025

• Convert grayscale frames into color in interactive calibration preview

  #27628 merged Aug 7, 2025

• 5.x merge 4.x

  #27634 merged Aug 7, 2025

• Added options to initialize Orbbec cameras with custom fps and resolution

  #27629 merged Aug 6, 2025

• Added timestamps support for Orbbec SDK backend in VideoIO.

  #27610 merged Aug 4, 2025

• doc: Enable GIF support by default on documentation

  #27622 merged Aug 4, 2025

• imgcodecs: png: adjust value range for IMWRITE_PNG_ZLIBBUFFER_SIZE

  #27615 merged Aug 1, 2025

• fix: mark distCoeffs/R/D as optional Python type stubs for calib3d functions

  #27564 merged Aug 1, 2025

• Clean up ONNX parser denylist and patch failing test cases

  #27611 merged Aug 1, 2025

• Added OpenCV.AI copyright.

  #27617 merged Aug 1, 2025

• KleidiCV support on Apple devices

  #27607 merged Jul 31, 2025

• 5.x merge 4.x

  #27604 merged Jul 31, 2025

• Jpeg Metadata (iccp and xmp)

  #27583 merged Jul 30, 2025

• Fixed build with libpng older than 1.5.x and reduced test memory consumption

  #27598 merged Jul 29, 2025

• Take into account overflow for connected components

  #27582 merged Jul 29, 2025

• core: support parsing back slash \ in parseKey in FileStorage (JSON)

  #27587 merged Jul 29, 2025

• imgcodecs: fix Imgcodecs_Png.write_big test for spng

  #27589 merged Jul 29, 2025

• CV_Bool support for masks in 3d module.

  #27573 merged Jul 28, 2025

• Added TopK layer with dynamic K support for new DNN engine

  #27547 merged Jul 28, 2025

• 5.x merge 4.x

  #27584 merged Jul 28, 2025

• core: add ARM64 NEON support for cvRound in fast_math.hpp

  #27575 merged Jul 28, 2025

• core: support parsing null in json parser in FileStorage

  #27579 merged Jul 28, 2025

• Reworked pre-computed intrinsiscs support in multi-view calibration script

  #27576 merged Jul 25, 2025

• Use calibration board imperfectness correction only for the cases where it's applicable

  #27571 merged Jul 25, 2025

• More intrinsic calibration flags in integractive calibration tool

  #27574 merged Jul 25, 2025

• 5.x merge 4.x

  #27566 merged Jul 24, 2025

• Fixed build issue with some old GCC versions

  #27569 merged Jul 24, 2025

• [GSOC 2025] PNG&WebP Metadata Reading Writing Improvements

  #27503 merged Jul 23, 2025

• G-API: Implement cfgEnsureNamedTensors option to OpenVINO Params

  #27549 merged Jul 22, 2025

• Add enum IMWRITE_PNG_ZLIBBUFFER_SIZE

  #27551 merged Jul 18, 2025

• fix compilation problems with MSVC+Cuda 12.9

  #27522 merged Jul 18, 2025

• Add Raspberry Pi 4 and 5 V4L2 Stateless HEVC Hardware Acceleration with FFmpeg

  #27453 merged Jul 18, 2025

• Trilu layer

  #27527 merged Jul 17, 2025

• Onnx multifile import

  #27449 merged Jul 16, 2025

• Added command line option to select VideoCapture backend

  #27546 merged Jul 16, 2025

• Update FastCV lib hash for Linux and Android

  #27525 merged Jul 16, 2025

• IfLayer add to new DNN engine

  #27508 merged Jul 16, 2025

• fix: mark Feature2D.detectAndCompute mask as optional in Python type stubs

  #27544 merged Jul 15, 2025

• Replace deprecated proto2::FieldDescriptor::is_optional

  #27545 merged Jul 15, 2025

• eigen: fix to get version from eigen after v3.4.0

  #27536 merged Jul 14, 2025

• imgcodecs: OpenEXR multispectral read/write support

  #27485 merged Jul 14, 2025

• FIX: CvCapture_FFMPEG::setProperty(CAP_PROP_POS_*) followed by getProperty

  #27523 merged Jul 14, 2025

• Fix XMP write and discarded return value.

  #27506 merged Jul 14, 2025

• Move IPP Remap to HAL

  #27519 merged Jul 14, 2025

• Fix potential crashes found by fuzzer.

  #27529 merged Jul 14, 2025

• Fixed memory leak in ipp_warp function

  #27532 merged Jul 14, 2025

33 Pull requests opened by 24 people

• Refactor Blackwell

  #27537 opened Jul 13, 2025

• modules/videoio: add libcamera backend for OpenCV VideoCapture

  #27554 opened Jul 17, 2025

• imgcodecs: bmp: support 32bpp BMP with IMREAD_UNCHANGED

  #27559 opened Jul 18, 2025

• Added fully functional convTranspose layer to new DNN engine

  #27560 opened Jul 19, 2025

• Optional Foreground Mask Feature for Background Subtractors

  #27561 opened Jul 20, 2025

• Enable Java wrapper generation for Vec4i

  #27567 opened Jul 21, 2025

• dlpack Python support for cuda_GpuMat and cuda_GpuMatND

  #27581 opened Jul 26, 2025

• Added fully functional resize layer to new DNN engine

  #27586 opened Jul 28, 2025

• Add seemore_superres sample for image super-resolution using seemoredetails (C++ and Python)

  #27592 opened Jul 28, 2025

• Add Alpha matting samples (C++ and Python)

  #27593 opened Jul 29, 2025

• core: ARM64 loop unrolling in kmeans to improve Weighted Filter performance

  #27596 opened Jul 29, 2025

• G-API: Implement cfgClampOutputs option to OpenVINO Params

  #27600 opened Jul 29, 2025

• Integrate Fractal ArUco into OpenCV

  #27601 opened Jul 29, 2025

• Update IPP integration (v2022.2.0)

  #27612 opened Jul 31, 2025

• Support Symbol.dispose for using keyword in OpenCV.js (#26157)

  #27613 opened Jul 31, 2025

• Trilu fix

  #27619 opened Aug 1, 2025

• Fix Python Scalar typing issue #27528

  #27620 opened Aug 1, 2025

• Add strict validation for encoding parameters

  #27621 opened Aug 2, 2025

• add a muti-camera visualisation script

  #27627 opened Aug 4, 2025

• core: fix missing vec_cvfo on IBM POWER9 due to unavailable VSX float64 conversion

  #27633 opened Aug 6, 2025

• fixed ocl.cpp data races without requiring additional locking

  #27638 opened Aug 6, 2025

• Try to fix KleidiCV on Linux and Mac.

  #27640 opened Aug 7, 2025

• Subdiv2d rect2f clean

  #27641 opened Aug 7, 2025

• stitching: enable loop unrolling in fast.cpp to improve ARM64 performance

  #27642 opened Aug 8, 2025

• fix Win32/Win64 garbled "Chinese" window titles in UNICODE builds. Fix #27645

  #27646 opened Aug 8, 2025

• Better reproducibility.

  #27647 opened Aug 8, 2025

• fix empty intrinsics handling and minor calibration improvements

  #27651 opened Aug 9, 2025

• Optimize VideoCapture with cvtColor instead of sws_scale

  #27652 opened Aug 10, 2025

• MGS-8318 Fix error:implicit declaration of function sub_group_reduce_add

  #27653 opened Aug 11, 2025

• Added proper type handling for TRILU layer

  #27655 opened Aug 11, 2025

• Added Size layer to new DNN engine

  #27656 opened Aug 11, 2025

• Added heuristic to allocate buffer for FAST features depending on input image resolution

  #27657 opened Aug 11, 2025

• Added Determinant (Det) layer to new DNN engine

  #27658 opened Aug 11, 2025

32 Issues closed by 13 people

• Implement minimum spanning tree

  #25150 closed Aug 12, 2025

• cv::cuda::warpAffine does not work inplace

  #27429 closed Aug 11, 2025

• gif: Imgcodecs_Gif.write_gif_flags tests compression and decompression PNG image.

  #27648 closed Aug 11, 2025

• Link errors “undefined reference to cublasLtSetEnvironmentMode” & “cublasLtGetEnvironmentMode” when building OpenCV 4.13.0 with CUDA 12.9 on Ubuntu 24.04

  #27639 closed Aug 11, 2025

• Requesting support for Tensorflow 2 models

  #23427 closed Aug 7, 2025

• Crash in Faster-RCNN Object Detection

  #14839 closed Aug 7, 2025

• Typo in "contrast_weight", spelled "contrast_weiht"

  #27474 closed Aug 1, 2025

• imgcodecs: png: adjust value range for IMWRITE_PNG_ZLIBBUFFER_SIZE

  #27614 closed Aug 1, 2025

• calib3d functions missing `| None` on `distCoeffs` in Python type stubs

  #27563 closed Aug 1, 2025

• Aruco generation produces too many bits in the dictionary

  #27609 closed Jul 31, 2025

• Does opencv uses libjpeg-turbo's tjDecompress for image decoding?

  #27594 closed Jul 31, 2025

• opencv 4.8.0 crash on open VideoCapture

  #27602 closed Jul 31, 2025

• The two functions, aruco.detectMarkers and aruco.interpolateCornersCharuco, are sensitive to image size

  #27595 closed Jul 30, 2025

• Imgcodecs_Png.write_big test consumes more memory in 4.x in comparison to 4.12.0

  #27597 closed Jul 29, 2025

• Opencv-python's connectedComponentsWithStats method segfaults

  #27568 closed Jul 29, 2025

• Support back slash in `parseKey` in FileStorage (JSON)

  #27585 closed Jul 29, 2025

• Imgcodecs_Png.write_big test is failed with WITH_SPNG=ON

  #27588 closed Jul 29, 2025

• Support parsing null objects in json parser in FileStorage

  #27578 closed Jul 28, 2025

• private.cuda.hpp:59:12: fatal error: cuda.h: No such file or directory

  #27565 closed Jul 21, 2025

• net.forward() crashes with RTX 5060

  #27552 closed Jul 18, 2025

• Compilation failure with CUDA 12.9

  #27521 closed Jul 18, 2025

• OpenCV does not support protobuf 3.x

  #23791 closed Jul 18, 2025

• compiling error on QNX plarform

  #17518 closed Jul 16, 2025

• Filesystem support on OpenBSD

  #20089 closed Jul 16, 2025

• OpenGL support does not turn on on linux for tegra(nvidia jetson OS)

  #21592 closed Jul 16, 2025

• OpenCV4.7.0 and CUDA12.0 compiled with VS2022 reported error C1041

  #23280 closed Jul 16, 2025

• Python bindings cv2 recursion issue

  #25876 closed Jul 16, 2025

• Sequence of pyrUp( ) causes Seg Fault or Program Crash due to Memory Overflow from Unbounded Image Expansion

  #27535 closed Jul 15, 2025

• `Feature2D.detectAndCompute` `mask` argument is missing `| None` in type stubs

  #27543 closed Jul 15, 2025

• Cannot build opencv with Eigen master branch

  #27530 closed Jul 14, 2025

• CvCapture_FFMPEG::setProperty(CAP_PROP_POS_*) sets `picture_pts` inconsistently

  #23088 closed Jul 14, 2025

• Build OpenCV Windows MSVC 2022 ARM64 failed during usage of Github CI Worker

  #27401 closed Jul 14, 2025

23 Issues opened by 22 people

• Current TRILU layer implementation lacks proper type handling

  #27654 opened Aug 11, 2025

• multiview_calibration.py fails when --intrinsics contains empty entries (cv2.FileStorage("") error)

  #27650 opened Aug 9, 2025

• Win32/Win64 imshow() always shows window with garbled "Chinese" titles (UNICODE build)

  #27645 opened Aug 8, 2025

• OpenCV to MSMF

  #27643 opened Aug 8, 2025

• Data races in ocl.cpp

  #27637 opened Aug 6, 2025

• Missing vec_cvfo symbol on POWER9 when building downstream project with OpenCV 4.x/3.x

  #27635 opened Aug 6, 2025

• dml_ep.obj : error LNK2019: unresolved external symbol

  #27632 opened Aug 6, 2025

• Unable to build `opencv_highgui` with Qt 6.9.1

  #27630 opened Aug 5, 2025

• OpenCV upgrade 4.11.0 -> 4.12.0: Release and Debug version overwrite each other upon installation

  #27626 opened Aug 4, 2025

• hand_eye_calibration: different methods have the same result

  #27625 opened Aug 4, 2025

• Why Subdiv2D takes ROI rect as cv::Rect and not cv::Rect2f? (possible bug)

  #27623 opened Aug 4, 2025

• 4.12.0 crash with android targetSdk 35 16KB page size

  #27618 opened Aug 1, 2025

• OpenCV DNN backend fails on inference with ViTs model

  #27603 opened Jul 30, 2025

• Latest FastCV update breaks Calib3d_CornerOrdering.issue_26830 test in 5.x

  #27591 opened Jul 28, 2025

• Latest FastCV update breaks Calib3d_ChessboardDetector2.accuracy test in 5.x

  #27590 opened Jul 28, 2025

• YOLOv4 not stateless on 32bit Windows with newer OpenCV versions

  #27580 opened Jul 25, 2025

• 最新版本4.12.x中，clone似乎成了浅拷贝，我不得不使用copyTo

  #27572 opened Jul 24, 2025

• std::stringview usage on imread/write

  #27562 opened Jul 20, 2025

• Proposal: Add strict validation for encoding parameters in OpenCV 5

  #27557 opened Jul 18, 2025

• Incorrect floating point edge case handling in cv::Mat::convertTo() and cv::saturate_cast() due to cvRound()

  #27556 opened Jul 18, 2025

• imread with IMREAD_UNCHANGED : 32Bit Bmp will not read alpha channel, 3 channel image returned

  #27555 opened Jul 17, 2025

• opencv 4.12.0 error (Android Library)

  #27553 opened Jul 17, 2025

• [CMake] allow building opencv via add_subdirectory(opencv) ?

  #27548 opened Jul 16, 2025

58 Unresolved conversations

Sometimes conversations happen on old items that aren’t yet closed. Here is a list of all the Issues and Pull Requests with unresolved conversations.

• G-API: Add support to set workload type dynamically in both OpenVINO and ONNX OVEP

  #27460 commented on Aug 11, 2025 • 68 new comments

• [WIP] GSoC 2025: Add Tokenizer Support to DNN Module

  #27534 commented on Aug 8, 2025 • 23 new comments

• WIP: Chromatic aberration correction

  #27491 commented on Jul 30, 2025 • 14 new comments

• [GSOC] ImageCollection Class improvements

  #27496 commented on Aug 3, 2025 • 12 new comments

• Fix issues in Convex Hull algorithm

  #27020 commented on Aug 7, 2025 • 5 new comments

• WIP: Lateral chromatic aberration calibration

  #27490 commented on Jul 30, 2025 • 3 new comments

• Use input rotation and translation in camera calibration

  #20219 commented on Jul 24, 2025 • 1 new comment

• adding codeql.yml

  #27533 commented on Jul 15, 2025 • 1 new comment

• LLM integration prototype

  #27176 commented on Aug 10, 2025 • 0 new comments

• opencv_perf_video meet implicit declaration of function 'sub_group_reduce_add' is invalid in OpenCL error

  #27507 commented on Aug 11, 2025 • 0 new comments

• Add support for libcamera

  #21653 commented on Aug 9, 2025 • 0 new comments

• After setting the decoder to hevc_cuvid, VideoCapture reads video more slowly

  #21969 commented on Aug 11, 2025 • 0 new comments

• OpenCV4.8.0 DNN inference speed reduced by 50%.

  #23911 commented on Aug 12, 2025 • 0 new comments

• Link OpenCV with Cmake FetchContent

  #20548 commented on Aug 9, 2025 • 0 new comments

• Call .create() during copyTo for an empty matrix.

  #21059 commented on Jul 25, 2025 • 0 new comments

• make cuda::GpuMatND compatible with InputArray/OutputArray

  #23913 commented on Aug 1, 2025 • 0 new comments

• Add new WeChat QR code detector

  #26499 commented on Jul 25, 2025 • 0 new comments

• [WIP] modules/videoio: add libcamera backend for OpenCV Video I/O

  #27155 commented on Aug 9, 2025 • 0 new comments

• [WIP] [GSOC] GGUF Importer

  #27177 commented on Jul 15, 2025 • 0 new comments

• [WIP] [GSOC] KV Caching for LLM inference

  #27205 commented on Jul 15, 2025 • 0 new comments

• Remove dead code corresponding to SOLVEPNP_DLS and SOLVEPNP_UPNP flags in OpenCV 5

  #27358 commented on Jul 25, 2025 • 0 new comments

• imgproc: add minEnclosingConvexPolygon

  #27369 commented on Jul 24, 2025 • 0 new comments

• Add canny, scharr and sobel for riscv-rvv hal.

  #27378 commented on Jul 15, 2025 • 0 new comments

• imgproc: Bilateral filter performance improvement

  #27433 commented on Aug 5, 2025 • 0 new comments

• feat: G-API: Custom stream sources in Python (#27276)

  #27443 commented on Jul 22, 2025 • 0 new comments

• imgproc: supports CV_SIMD_SCALABLE in pointSetBoundingRect

  #27479 commented on Jul 14, 2025 • 0 new comments

• [GSOC 2025] Imgcodecs Metadata Support

  #27488 commented on Aug 7, 2025 • 0 new comments

• core: vectorize cv::reduce

  #27510 commented on Jul 16, 2025 • 0 new comments

• Extend findTransformECC and computeECC to support multichannel input (1 or 3 channels)

  #27524 commented on Jul 21, 2025 • 0 new comments

• Make proper layers implementations to support the new dnn engine in 5.x

  #26112 commented on Jul 14, 2025 • 0 new comments

• Python: Scalar typing change complicates usage

  #27528 commented on Jul 15, 2025 • 0 new comments

• cmake Could not find OpenBLAS

  #23883 commented on Jul 16, 2025 • 0 new comments

• CV_ADD Clang compilation error

  #22575 commented on Jul 16, 2025 • 0 new comments

• Documentation improvement plan

  #9520 commented on Jul 16, 2025 • 0 new comments

• ONNX ViT model fails with DNN_BACKEND_INFERENCE_ENGINE in OpenCV, but works in all other cases

  #27451 commented on Jul 17, 2025 • 0 new comments

• Building WSAM modules for imgcodecs and other modules that isn't default

  #27531 commented on Jul 17, 2025 • 0 new comments

• Memory leak in cv::subtract (4.11.0)

  #27171 commented on Jul 17, 2025 • 0 new comments

• Support optional foreground input mask to cv::BackgroundSubtractor::apply

  #26476 commented on Jul 21, 2025 • 0 new comments

• Severl Size_MatType_OutMatDepth_integral_sqsum/* cases from imgproc perf fail on SpacemiT K1

  #27407 commented on Jul 21, 2025 • 0 new comments

• videoio and core module test fails on Windows 11 but passes on Windows 10

  #27438 commented on Jul 22, 2025 • 0 new comments

• 4.10.0 - visionOS compile errors with VideoIO

  #26450 commented on Jul 24, 2025 • 0 new comments

• Your platform doesn't suppport hardware accelerated AV1 decoding. Failed to get pixel format.

  #24430 commented on Jul 24, 2025 • 0 new comments

• medianBlur() gives (-215:Assertion failed) when ksize > 256

  #26407 commented on Jul 24, 2025 • 0 new comments

• OpenCV does not find_dependency(Eigen3) for transitive link dependency

  #18521 commented on Jul 29, 2025 • 0 new comments

• buildOpticalFlowPyramid + calcOpticalFlowPyrLK + cloned pyramids

  #8268 commented on Jul 29, 2025 • 0 new comments

• Add support for editing metadata/headers for OpenEXR

  #27517 commented on Jul 30, 2025 • 0 new comments

• Implement GTK 4.0 support in highgui

  #27135 commented on Jul 31, 2025 • 0 new comments

• Resize Mat with "not-fitting" scale shifts image

  #25852 commented on Jul 31, 2025 • 0 new comments

• JS: Support new `using` javascript keyword for explicit resource management

  #26157 commented on Aug 1, 2025 • 0 new comments

• How to compile WASM OpenCV libs ?

  #27502 commented on Aug 2, 2025 • 0 new comments

• Why does my OpenCV Camera does not show up for the first time when I grant the camera permission

  #27446 commented on Aug 3, 2025 • 0 new comments

• is that possible to change default image from BGR to RGB at 5.0 version?

  #23906 commented on Aug 4, 2025 • 0 new comments

• Bogus C-cast and illegal assumptions of Object-layout causes segfault in convhull.cpp

  #26952 commented on Aug 5, 2025 • 0 new comments

• CAP_PROP_WHITE_BALANCE_BLUE_U incorrectly controls white balance temperature on Windows (DirectShow backend)

  #27372 commented on Aug 6, 2025 • 0 new comments

• cuda::remap() returns different results from cv::remap()

  #24602 commented on Aug 6, 2025 • 0 new comments

• HDR tutorial result is different from the code running.

  #22219 commented on Aug 7, 2025 • 0 new comments

• OpenCV 5: use `expected` for cleaner APIs

  #27272 commented on Aug 7, 2025 • 0 new comments

• Any intention to add interoperability with DLPACK or mpi4py?

  #16295 commented on Aug 7, 2025 • 0 new comments