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# Welcome to opencv documentation!

- OpenCV API Reference
  - Introduction
  - core. The Core Functionality
  - imgproc. Image Processing
  - highgui. High-level GUI and Media I/O
  - video. Video Analysis
  - calib3d. Camera Calibration and 3D Reconstruction
  - features2d. 2D Features Framework
  - objdetect. Object Detection
  - ml. Machine Learning
  - flann. Clustering and Search in Multi-Dimensional Spaces
  - gpu. GPU-accelerated Computer Vision
  - photo. Computational Photography
  - stitching. Images stitching
  - nonfree. Non-free functionality
  - contrib. Contributed/Experimental Stuff
  - legacy. Deprecated stuff
  - ocl. OpenCL-accelerated Computer Vision
  - superres. Super Resolution
  - viz. 3D Visualizer
- OpenCV4Android Reference
  - Android OpenCV Manager
  - Java API
- OpenCV User Guide
  - Operations with images
  - Features2d
  - Kinect and OpenNI
  - Cascade Classifier Training
  - Senz3D and Intel Perceptual Computing SDK
- OpenCV Tutorials

# Indices and tables

- Index
- Search Page

## Help and Feedback

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