Issues

5.x: convertTo() drops saturation for CV_64U/CV_64S/CV_32U sources once the array reaches the vector width

#29964

· pranayr710 opened

on Sep 16, 2026

·

5.1

Python cv2.calcBackProject fails for 3D RGB histogram, ignores the 3rd channel(OpenCV 5.0.0)

bug

category: imgproc

#29938

· minhuchen opened

on Sep 13, 2026

[RFC] Plan-V4D — a type-safe dataflow eDSL and graphics runtime as an OpenCV extra module

feature

#29935

· kallaballa opened

on Sep 12, 2026

5.x: cv::multiply / cv::pow on 16U give 0 instead of the saturated 65535 for short arrays and for the tail of in-place calls; #28557 is back and its regression test is DISABLED_

bug

category: core

test

#29893

· SichenLiang opened

on Sep 8, 2026

·

5.1

OpenCV 5.x build is broken with -DOPENCV_FORCE_3RDPARTY_BUILD=ON option on Linux

bug

category: build/install

#29888

· asmorkalov opened

on Sep 7, 2026

dnn: vendored MLAS cannot be built on Windows/x86 — CMakeLists assumes a GCC driver (OpenCV 5.0.0)

bug

category: 3rdparty

category: build/install

platform: win32

#29885

· slajerek opened

on Sep 7, 2026

·

5.1

Minor change to the documentation of cv.add() in Python Tutorial

bug

category: python bindings

#29870

· TBSDrJ opened

on Sep 4, 2026

·

5.1

Feature Request: General λ-connected (lambda-connected) segmentation

feature

#29869

· lchenudc opened

on Sep 4, 2026

connectedComponents / connectedComponentsWithStats segfault on zero-size input instead of raising

category: imgproc

category: python bindings

#29854

· ibellCFS opened

on Sep 2, 2026

·

4.15.0

phaseCorrelateIterative can return `(-N/2, -N/2)` for valid float32 inputs

bug

#29849

· fmatuschke opened

on Sep 2, 2026

Feature Request: General λ-connected (lambda-connected) segmentation (beyond flood())

feature

#29845

· lchenudc opened

on Sep 1, 2026

dnn: build fails with `Error: unsupported instruction 'vpdpbusd'` on GCC 11 + binutils < 2.36 (AVX-VNNI gate ignores assembler)

bug

category: build/install

category: dnn

#29840

· andreyfe1 opened

on Sep 1, 2026

·

5.1

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All issues

5.x: convertTo() drops saturation for CV_64U/CV_64S/CV_32U sources once the array reaches the vector width

Python cv2.calcBackProject fails for 3D RGB histogram, ignores the 3rd channel(OpenCV 5.0.0)

[RFC] Plan-V4D — a type-safe dataflow eDSL and graphics runtime as an OpenCV extra module

5.x: cv::multiply / cv::pow on 16U give 0 instead of the saturated 65535 for short arrays and for the tail of in-place calls; #28557 is back and its regression test is DISABLED_

OpenCV 5.x build is broken with -DOPENCV_FORCE_3RDPARTY_BUILD=ON option on Linux

dnn: vendored MLAS cannot be built on Windows/x86 — CMakeLists assumes a GCC driver (OpenCV 5.0.0)

Minor change to the documentation of cv.add() in Python Tutorial

Feature Request: General λ-connected (lambda-connected) segmentation

connectedComponents / connectedComponentsWithStats segfault on zero-size input instead of raising

phaseCorrelateIterative can return `(-N/2, -N/2)` for valid float32 inputs

Feature Request: General λ-connected (lambda-connected) segmentation (beyond flood())

dnn: build fails with `Error: unsupported instruction 'vpdpbusd'` on GCC 11 + binutils < 2.36 (AVX-VNNI gate ignores assembler)

Uh oh!

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