Library of programming functions mainly aimed at real-time vision

OpenCV

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OpenCV 4.2.0

  -  206 MB  -  Open Source
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Security Status

  • Latest Version

    OpenCV 4.10.0

  • Operating System

    Windows XP / Vista / Windows 7 / Windows 8 / Windows 10

  • User Rating

    Click to vote

  • Author / Product

    OpenCV Team / External Link

  • Filename

    opencv-4.2.0-vc14_vc15.exe

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of OpenCV 4.2.0.


For those interested in downloading the most recent release of OpenCV or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


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Download OpenCV 4.2.0

  • OpenCV 4.2.0 Screenshots

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    OpenCV 4.2.0 Screenshot 1
  • OpenCV 4.2.0 Screenshot 2
  • OpenCV 4.2.0 Screenshot 3
  • OpenCV 4.2.0 Screenshot 4

What's new in this version:

DNN module:
- Integrated GSoC project with CUDA backend
- Intel® Inference Engine backend ( OpenVINO™ ): support for nGraph OpenVINO API (preview / experimental)

Performance improvements:
- SIMD intrinsics: StereoBM/StereoSGBM algorithms, resize, integral, flip, accumulate with mask, HOG, demosaic, moments
- Muti-threading: pyrDown


And many other great patches from OpenCV community:
- VideoCapture: video stream extraction (demuxing) through FFmpeg backend
- VideoCapture: waitAny() API for camera input multiplexing (Video4Linux through poll() calls)
- (opencv_contrib) new algorithm Rapid Frequency Selective Reconstruction (FSR): #2296 + tutorial
- (opencv_contrib) RIC method for sparse match interpolation
- (opencv_contrib) LOGOS features matching strategy

Breaking changes:
- Disabled constructors for legacy C API structures
- Implementation of Thread Local Storage (TLS) has been improved to release data from terminated threads. API has been changed
- Don't define unsafe CV_XADD implementation by default
- Python conversion rules of passed arguments will be updated in next releases

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