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Technical

Title
OpenCV 4.3.0 for Windows
Requirements
  • Windows 10
  • Windows 8
  • Windows 7
  • Windows XP
  • Windows Vista
Language
English
Available languages
English
License
Free
Latest update
Author
OpenCV team
SHA-1
2b64ce1d46c4e0a11e837a0ebd91e40e8f84c460
Filename
opencv-4.1.0.zip

Program available in other languages

What’s new:First of all, 4.0 alpha includes all the latest improvements, optimizations and bug fixes from 3.4 branch. In particular:ONNX parser has been added to OpenCV DNN module. It supports various classification networks, such as AlexNet, Inception v2, Resnet, VGG etc. The tiny YOLO v2 object detection network is also partially supported.A few other notable DNN improvements:Mask RCNN support and the exampleFaster object detection when using Intel Inference Engine (a part of Intel OpenVINO)Several stability improvements in the OpenCL backend.Fast QR code detector (~80FPS @ 640x480 resolution on Core i5 desktop). By 4.0 gold we plan to add the QR code decoder as well, so that we have a complete solution.Constantly expanding set of SSE4-, AVX2- and NEON-optimized kernels via so called “wide universal intrinsics”.Besides, OpenCV 4.0 alpha includes some exclusive features, such as:OpenCV is C++11 library now and it requires C++11 compliant compiler. Therefore, some nice features like parallel_for with lambda functions, convenient iteration over cv::Mat, initialization of cv::Mat by listing its elements etc. are available by default.The standard std::string and std::shared_ptr replaced hand-crafted cv::String and cv::Ptr. Our parallel_for can now use the pool of std::threads as the backend.The legacy C API from OpenCV 1.x (using CvMat, IplImage, etc.) is partially excluded; the cleanup should mostly be finished by OpenCV 4.0 gold.Added basic FP16 support (the new CV_16F type has been added).CPU- and GPU-accelerated KinFu live 3d dense reconstruction algorithm has been included into opencv_contrib.HPX parallel backend (thanks to Jakub Golinowski)The new chessboard detector (thanks to Alexander Duda)Overall, OpenCV 4.0 alpha release includes 85 patches, including 28 massive merge requests from 3.4 branch.Please note that even though the release should be quite stable, quite a few changes in OpenCV API and implementation are yet to be done before 4.0 final.

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