{"id":16110066,"url":"https://github.com/madduci/opencv_demo","last_synced_at":"2026-05-09T00:08:10.275Z","repository":{"id":26453021,"uuid":"29904178","full_name":"madduci/opencv_demo","owner":"madduci","description":"A collection of examples using OpenCV 2.4 and 3.0 APIs","archived":false,"fork":false,"pushed_at":"2020-06-24T03:49:42.000Z","size":6318,"stargazers_count":1,"open_issues_count":1,"forks_count":2,"subscribers_count":1,"default_branch":"master","last_synced_at":"2026-01-14T17:22:37.460Z","etag":null,"topics":["cmake","computer-vision","cpp","opencv"],"latest_commit_sha":null,"homepage":"","language":"JavaScript","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"agpl-3.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/madduci.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2015-01-27T08:16:32.000Z","updated_at":"2020-06-24T03:50:59.000Z","dependencies_parsed_at":"2022-08-29T15:51:40.734Z","dependency_job_id":null,"html_url":"https://github.com/madduci/opencv_demo","commit_stats":null,"previous_names":["blackibiza/opencv_demo"],"tags_count":1,"template":false,"template_full_name":null,"purl":"pkg:github/madduci/opencv_demo","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/madduci%2Fopencv_demo","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/madduci%2Fopencv_demo/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/madduci%2Fopencv_demo/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/madduci%2Fopencv_demo/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/madduci","download_url":"https://codeload.github.com/madduci/opencv_demo/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/madduci%2Fopencv_demo/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":32802552,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-05-08T08:22:46.396Z","status":"ssl_error","status_checked_at":"2026-05-08T08:22:45.650Z","response_time":54,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.6:443 state=error: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["cmake","computer-vision","cpp","opencv"],"created_at":"2024-10-09T19:35:23.478Z","updated_at":"2026-05-09T00:08:10.261Z","avatar_url":"https://github.com/madduci.png","language":"JavaScript","funding_links":[],"categories":[],"sub_categories":[],"readme":"# OpenCV Examples - 1.0.0 \n\n[ ![Codeship Status for blackibiza/opencv_demo](https://codeship.com/projects/f8ed6680-8f47-0132-366b-2e671bfc968e/status?branch=master)](https://codeship.com/projects/61178)\n\n### Authors / Contributors\n\n**Michele Adduci**, Research Associate @ \nHumboldt Universität zu Berlin - Computer Vision Dept.\n\nAny additional contribution with demos, examples or optimizations is warmly welcome.\n\n----------\n\n### What is this repository for?\n\nThis repository contains examples related to Image Processing, as part of Computer Vision lectures of Winter Semester 2014/15,\ndirected by Prof. Dr. rer. nat. **R. Reulke**\n\n----------\n\n### What are the examples contained in this repository?\n\n- **Basic Operations**\n\t- binarization - shows the thresholding functions applied to an image (Binary, Binary Inverted, Truncate, To Zero, To Zero Inverted)\n\t- conversions - shows some color conversions available in OpenCV (Grayscale, HSV, HLS, Lab, YUV)\n\t- dilation    - demonstrates the dilation operator\n\t- erosion     - demonstrates the erosion operator\n\t- smoothing   - shows the smoothing filters applied to an image (Median, Gaussian, Bilateral, Homogeneous)\n\n----------\n\n- **Feature Extraction**\n\t- BRISK\n\t- ORB\n\t- SIFT (in OpenCV 2.4.x not available, in OpenCV 3.x the **contrib** module is required)\n\t- SURF (in OpenCV 2.4.x not available, in OpenCV 3.x the **contrib** module is required)\n\n----------\n\n- **Image Processing**\n\t- canny_edge - shows the Canny Edge detector\n\t- gradients  - shows the available image gradients operations available in OpenCV (Sobel, Laplacian, Scharr)\n\t- histograms - shows the histograms of an image, changing brightness and contrast\n\t- watershed  - shows the watershed segmentation algorithm applied to an image\n\n----------\n\n- **Object Detection**\n\t- face_detection    - shows the Face Detection algorithm using Haar Cascade Feature Histograms\t\n\t- template_matching - demonstrates the Template Matching using Histograms\n\n----------\n\t\n### What do I need to compile the examples? \n\nTools/Dependencies needed:\n\n* C++11 compiler - **Linux**: g++ (4.8+) / **MS Windows**: Visual Studio (2012+)\n* CMake 2.8.11+\n* OpenCV:\n\t- 2.4.x branch\n\t- 3.x branch with **contrib** module\n\n----------\n\n### How do I compile and run the examples? \n\n#### Linux\n\n##### Compile:\n    mkdir ~/opencv_examples \u0026\u0026 cd ~/opencv_examples\n    cmake -DCMAKE_BUILD_TYPE=Release /path/to/this/downloaded/repository\n    make -j4 \u0026\u0026 make install\n\n##### Run:\n    cd ~/opencv_examples/install/bin/\n\tcv_binarization test_data/btor.jpg    \n\n#### Windows\n\n##### Compile:\nUsing CMake Gui, set source and build directories\n\nSet the variable CMAKE_BUILD_TYPE to Release\n\nOpen **OpenCV Examples.sln** with MS Visual Studio and then press F7.\n\nSelect subproject *INSTALL* -\u003e right click -\u003e *Project Only* -\u003e *Build Only INSTALL*\n\n##### Run:\nFrom command prompt (**Win+R** and then type **cmd.exe**)\n\n    cd path\\to\\build\\folder\n\tcd install\\bin\n\tcv_binarization.exe test_data\\btor.jpg","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmadduci%2Fopencv_demo","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fmadduci%2Fopencv_demo","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmadduci%2Fopencv_demo/lists"}