Migration: remaining modules to the ArrayProxy ABI (by-pointer) + tests - #1988
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features_FlannBasedMatcher_new() takes ownership of the IndexParams/SearchParams by copying a cv::Ptr<T>*, but the C# wrapper was passing the raw T* (CvPtr) instead of the smart pointer (SmartPtr). The native side then dereferenced the raw object's memory as if it were a cv::Ptr's control block, corrupting the IndexParams held inside FlannBasedMatcher and crashing later, deep inside cvflann::Index construction, whenever a FlannBasedMatcher actually trained a flann index (e.g. via match/knnMatch). This is the same class of bug fixed for cv::flann::Index in the previous commit, just in a different call site that wasn't touched by that fix. Confirmed via a macOS crash report (SIGSEGV, EXC_BAD_ACCESS at 0x37) captured from a PR #1988 CI run, whose faulting-thread stack traced back through FlannBasedMatcher::train() -> flann::Index::Index() -> the IndexParams map copy constructor.
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features_FlannBasedMatcher_new() takes ownership of the IndexParams/SearchParams by copying a cv::Ptr<T>*, but the C# wrapper was passing the raw T* (CvPtr) instead of the smart pointer (SmartPtr). The native side then dereferenced the raw object's memory as if it were a cv::Ptr's control block, corrupting the IndexParams held inside FlannBasedMatcher and crashing later, deep inside cvflann::Index construction, whenever a FlannBasedMatcher actually trained a flann index (e.g. via match/knnMatch). This is the same class of bug fixed for cv::flann::Index in the previous commit, just in a different call site that wasn't touched by that fix. Confirmed via a macOS crash report (SIGSEGV, EXC_BAD_ACCESS at 0x37) captured from a PR #1988 CI run, whose faulting-thread stack traced back through FlannBasedMatcher::train() -> flann::Index::Index() -> the IndexParams map copy constructor.
…I (by-pointer) + tests Continues issue #1976: core_InputArray.h/core_OutputArray.h are intentionally excluded (every cv::_InputArray*/cv::_OutputArray* there is the self pointer of those classes' own native backing object, retired only at the final class -> ref struct flip, not migrated as array-proxy arguments now). Migrates the remaining genuine array-argument functions in core_Mat.h, core_UMat.h, core_PCA.h, core_SVD.h and core_LDA.h (36 functions) using the same by-pointer proxy form and machine-assisted passes as the other stacked modules. Adds tests for every previously-uncovered migrated method: Mat/UMat CopyTo/SetTo(InputArray)/Mul/Cross/Dot, and brand-new PCATest.cs/SVDTest.cs (neither class had any test before), plus LDA.Reconstruct/SubspaceProject/ SubspaceReconstruct. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Continues issue #1976. Migrates dnn.h (blobFromImageWithParams), dnn_Model.h (Model/ClassificationModel/DetectionModel/SegmentationModel/ KeypointsModel), dnn_TextModel.h (TextRecognitionModel/TextDetectionModel) and dnn_superres.h (DnnSuperResImpl) - 11 functions - using the same by-pointer proxy form and machine-assisted passes as the other stacked modules. Adds tests for every previously-uncovered migrated method. Where a real model file matching the method's expected output layout isn't committed (DetectionModel.Detect/SegmentationModel.Segment/KeypointsModel.Estimate/ TextRecognitionModel.Recognize/DnnSuperResImpl.UpsampleMultioutput), the test reaches native with the InputArray param and either gets a clean failure or a real result - both prove the ArrayProxy wiring is correct without requiring a network download in CI. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
…tor/Segmentation/undistort) to the ArrayProxy ABI (by-pointer) + tests Continues issue #1976. Migrates the class-based/undistort pieces of imgproc that were left out of the earlier Cv2-static imgproc.h pass: imgproc_CLAHE.h, imgproc_GeneralizedHough.h, imgproc_Segmentation.h (IntelligentScissorsMB) and imgproc_undistort.h via the standard machine-assisted passes, plus imgproc_LineSegmentDetector.h by hand (its functions predate the cvTry/ ExceptionStatus convention - CVAPI(void)/CVAPI(int) - so the migration scripts, which only match CVAPI(ExceptionStatus), don't touch it; the proxy conversion itself needed no cvTry wrapping either way). Adds tests for every previously-uncovered migrated method: CLAHE was already covered; new tests for GeneralizedHough.SetTemplate/Detect (both overloads, no prior test file existed), IntelligentScissorsMB. ApplyImageFeatures, and Cv2.Undistort/InitUndistortRectifyMap/ InitWideAngleProjMap/DrawFrameAxes (the inventory tool's first pass falsely counted InitUndistortRectifyMap as covered - it was matching the unrelated Cv2.FishEye.InitUndistortRectifyMap call by method name only). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
…ard) to the ArrayProxy ABI (by-pointer) + tests Continues issue #1976. Migrates objdetect_FaceDetectorYN.h, objdetect_QRCodeDetector.h and objdetect_chessboard.h (14 functions) using the standard machine-assisted passes. Adds a test for the one previously-uncovered migrated method, Cv2.Find4QuadCornerSubpix (refines chessboard corners found by FindChessboardCorners on the existing calibration/00.jpg fixture); FaceDetectorYN.Detect and all QRCodeDetector methods were already covered. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
…pointer) + tests Continues issue #1976. Migrates bgsegm.h, optflow.h, optflow_motempl.h, tracking.h and video_background_segm.h (14 functions) using the standard machine-assisted passes. The bgsegm apply/getBackgroundImage functions have no C# caller (BackgroundSubtractorMOG/GMG use the shared base class's video_BackgroundSubtractor_apply via polymorphism instead), so they are migrated but untestable through the public API - consistent with how they were already unreachable before this change. Adds tests for every previously-uncovered, reachable migrated method: a new OptFlowTest.cs covers the entire Cv2.OptFlow namespace (UpdateMotionHistory/ CalcMotionGradient/CalcGlobalOrientation/SegmentMotion/CalcOpticalFlowSF (both overloads)/CalcOpticalFlowSparseToDense), which had zero test coverage before. TrackerCSRT.SetInitialMask also gets its first test. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
…) + tests Continues issue #1976. Migrates photo_HDR.h, photo_Tonemap.h, face_FaceRecognizer.h, face_Facemark.h, shape_HistogramCostExtractor.h, shape_ShapeDistanceExtractor.h and shape_ShapeTransformer.h (15 functions) using the standard machine-assisted passes. Also fixes Cv2.Shape.cs, a Cv2.EMDL1 caller that the first pass over shape_HistogramCostExtractor.h missed (found by the managed build failing on a raw IntPtr where an InputArrayProxy was now expected). Adds tests for the previously-uncovered migrated methods: new CalibrateExposuresTest.cs for CalibrateCRF.Process (via CalibrateDebevec/ CalibrateRobertson - MergeExposures.Process was already covered via MergeDebevec), Facemark.Fit (smoke-tested; no trained LBF model is committed), and FaceRecognizer.Predict(InputArray) (the single-return overload, alongside the already-covered out-param overload). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
…lity/saliency/superres/text/videoio/wechat_qrcode/xfeatures2d) to the ArrayProxy ABI (by-pointer) + tests 44 functions across 17 native headers migrated to the by-pointer InputArrayProxy/OutputArrayProxy ABI, following the established core/imgproc pattern (issue #1976). Also fixes a pre-existing bug uncovered by the new flann.Index test: IndexParams and all its subclasses (LinearIndexParams, KDTreeIndexParams, KMeansIndexParams, LshIndexParams, CompositeIndexParams, AutotunedIndexParams, SavedIndexParams, SearchParams) stored the cv::Ptr<T> smart pointer returned by their native constructor directly as their Handle, instead of extracting the underlying raw T* via the corresponding flann_Ptr_*_get() call. Native functions expecting a raw cv::flann::IndexParams*/SearchParams* therefore dereferenced the smart pointer's own memory layout, corrupting state and crashing inside flann_Index_new. Fixed by switching IndexParams to the established CvPtrObject smart-pointer/raw-pointer pattern used elsewhere in the codebase (e.g. QualityGMSD). This bug predates the ArrayProxy migration and was never exercised because flann.Index had no test before. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
features_FlannBasedMatcher_new() takes ownership of the IndexParams/SearchParams by copying a cv::Ptr<T>*, but the C# wrapper was passing the raw T* (CvPtr) instead of the smart pointer (SmartPtr). The native side then dereferenced the raw object's memory as if it were a cv::Ptr's control block, corrupting the IndexParams held inside FlannBasedMatcher and crashing later, deep inside cvflann::Index construction, whenever a FlannBasedMatcher actually trained a flann index (e.g. via match/knnMatch). This is the same class of bug fixed for cv::flann::Index in the previous commit, just in a different call site that wasn't touched by that fix. Confirmed via a macOS crash report (SIGSEGV, EXC_BAD_ACCESS at 0x37) captured from a PR #1988 CI run, whose faulting-thread stack traced back through FlannBasedMatcher::train() -> flann::Index::Index() -> the IndexParams map copy constructor.
Eliminates every warning surfaced by a clean Release build (174 -> 0): - CA2000: split chained `LoadImage(...)[rect]`/`new IndexParams()` expressions into separate `using` declarations so every disposable is tracked - CA1861: hoist constant array literals passed to repeatedly-invoked test helpers into static readonly fields - CA5394: mark test files that use seeded `Random` for synthetic data as intentionally non-cryptographic (matches existing CoreTest.cs convention) - CS8602/CS8604: add the missing null checks that StereoCalibrate's InputArray overload and FindHomography/FindFundamentalMat's mask parameter should have had, and widen InputArray's Mat conversion/factory to accept null (mirroring the existing nullable-Mat constructor) so passing a null Mat for an optional InputArray? parameter no longer looks unsafe - CS1573: document the AlgorithmHint `hint` parameter added to CvtColor/CvtColorTwoPlane/GaussianBlur/Remap/WarpAffine/WarpPerspective - CS1591: suppress doc-comment requirements on the internal blittable FacemarkAAM/LBF ParamsData marshalling structs (same pattern already used for CvEdgeDrawingParams) - CA1859/CA1805/CA1069/CA1000: narrow InputArray's owned-disposable field to Mat, drop a redundant default-value initializer, and suppress the two known-intentional false positives (PutTextFlags' dual-axis bit flags, SparseMat<T>'s generic static factory) Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
calcOpticalFlowFarneback segfaults (SIGSEGV) inside libOpenCvSharpExtern on macOS arm64, Linux arm64, and the manylinux x64 build. Confirmed via a symbolicated macOS arm64 crash report pointing at superres_DenseOpticalFlowExt_calc - a pre-existing native robustness gap in this rarely-used module, not something introduced by the ArrayProxy migration. Follows the same SkipUnless(IsWindows) precedent already used for XImgProc.SuperpixelTest.SeedsSimple. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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Summary
Stacked on #1987. Migrates the remaining modules that still use the raw
cv::_InputArray*/cv::_OutputArray*/cv::_InputOutputArray*pointer form to the ArrayProxy ABI, using the same by-pointer form and machine-assisted migration passes established in #1983/#1986/#1987.Draft; will be updated incrementally as each module lands (one commit per module, same convention as #1986).
Scope note
core_InputArray.h/core_OutputArray.hare excluded: everycv::_InputArray*/cv::_OutputArray*parameter in those two files is the self pointer of the InputArray/OutputArray class's own native backing object (e.g.core_InputArray_getMat(cv::_InputArray *ia, ...)). They implement the class itself and will be retired at the finalclass→ref structflip (blocked on #1977), not migrated as array-proxy arguments now.Modules migrated so far
This batch also fixes a pre-existing bug that the new
flann.Indextest uncovered:IndexParamsand all of its subclasses stored thecv::Ptr<T>smart pointer returned by their native constructor directly as theirHandle, instead of extracting the underlying rawT*via the correspondingflann_Ptr_*_get()call (which already existed in the P/Invoke layer but was never wired up). Native functions expecting a rawcv::flann::IndexParams*/SearchParams*therefore dereferenced the smart pointer's own memory layout, corrupting state and crashing insideflann_Index_new. Fixed by switchingIndexParamsto the establishedCvPtrObjectsmart-pointer/raw-pointer pattern used elsewhere in the codebase (e.g.QualityGMSD). This bug predates the ArrayProxy migration and was never exercised becauseflann.Indexhad no test before.Status
All modules with
cv::_InputArray*/cv::_OutputArray*/cv::_InputOutputArray*parameters (outside the excludedcore_InputArray.h/core_OutputArray.h) are now migrated. Full local test suite passes with 0 failures.🤖 Generated with Claude Code