Introduction
OpenCV Tutorials
OpenCV-Python Tutorials
OpenCV.js Tutorials
Tutorials for contrib modules
Frequently Asked Questions
Bibliography
Main modules:
- core. Core functionality
- imgproc. Image Processing
- imgcodecs. Image file reading and writing
- videoio. Video I/O
- highgui. High-level GUI
- video. Video Analysis
- calib3d. Camera Calibration and 3D Reconstruction
- features2d. 2D Features Framework
- objdetect. Object Detection
- dnn. Deep Neural Network module
- ml. Machine Learning
- flann. Clustering and Search in Multi-Dimensional Spaces
- photo. Computational Photography
- stitching. Images stitching
- gapi. Graph API
Extra modules:
- alphamat. Alpha Matting
- aruco. Aruco markers, module functionality was moved to objdetect module
- bgsegm. Improved Background-Foreground Segmentation Methods
- bioinspired. Biologically inspired vision models and derivated tools
- ccalib. Custom Calibration Pattern for 3D reconstruction
- cudaarithm. Operations on Matrices
- cudabgsegm. Background Segmentation
- cudacodec. Video Encoding/Decoding
- cudafeatures2d. Feature Detection and Description
- cudafilters. Image Filtering
- cudaimgproc. Image Processing
- cudalegacy. Legacy support
- cudaobjdetect. Object Detection
- cudaoptflow. Optical Flow
- cudastereo. Stereo Correspondence
- cudawarping. Image Warping
- cudev. Device layer
- cvv. GUI for Interactive Visual Debugging of Computer Vision Programs
- datasets. Framework for working with different datasets
- dnn_objdetect. DNN used for object detection
- dnn_superres. DNN used for super resolution
- dpm. Deformable Part-based Models
- face. Face Analysis
- freetype. Drawing UTF-8 strings with freetype/harfbuzz
- fuzzy. Image processing based on fuzzy mathematics
- hdf. Hierarchical Data Format I/O routines
- hfs. Hierarchical Feature Selection for Efficient Image Segmentation
- img_hash. The module brings implementations of different image hashing algorithms.
- intensity_transform. The module brings implementations of intensity transformation algorithms to adjust image contrast.
- julia. Julia bindings for OpenCV
- line_descriptor. Binary descriptors for lines extracted from an image
- mcc. Macbeth Chart module
- optflow. Optical Flow Algorithms
- ovis. OGRE 3D Visualiser
- phase_unwrapping. Phase Unwrapping API
- plot. Plot function for Mat data
- quality. Image Quality Analysis (IQA) API
- rapid. silhouette based 3D object tracking
- reg. Image Registration
- rgbd. RGB-Depth Processing
- saliency. Saliency API
- sfm. Structure From Motion
- shape. Shape Distance and Matching
- stereo. Stereo Correspondance Algorithms
- structured_light. Structured Light API
- superres. Super Resolution
- surface_matching. Surface Matching
- text. Scene Text Detection and Recognition
- tracking. Tracking API
- v4d. V4D
- videostab. Video Stabilization
- viz. 3D Visualizer
- wechat_qrcode. WeChat QR code detector for detecting and parsing QR code.
- xfeatures2d. Extra 2D Features Framework
- ximgproc. Extended Image Processing
- xobjdetect. Extended object detection
- xphoto. Additional photo processing algorithms