2D Features framework (feature2d module)

Learn about how to use the feature points detectors, descriptors and matching framework found inside OpenCV.

• Harris corner detector

  Languages: C++, Java, Python

  Compatibility: > OpenCV 2.0

  Author: Ana Huamán

  Why is it a good idea to track corners? We learn how to use the Harris method to detect corners.

• Shi-Tomasi corner detector

  Languages: C++, Java, Python

  Compatibility: > OpenCV 2.0

  Author: Ana Huamán

  Where we use an improved method to detect corners more accurately.

• Creating your own corner detector

  Languages: C++, Java, Python

  Compatibility: > OpenCV 2.0

  Author: Ana Huamán

  Here you will learn how to use OpenCV functions to make your personalized corner detector!

  Languages: C++, Java, Python

• Detecting corners location in subpixels

  Languages: C++, Java, Python

  Compatibility: > OpenCV 2.0

  Author: Ana Huamán

  Is pixel resolution enough? Here we learn a simple method to improve our corner location accuracy.

• Feature Detection

  Languages: C++, Java, Python

  Compatibility: > OpenCV 2.0

  Author: Ana Huamán

  In this tutorial, you will use features2d to detect interest points.

• Feature Description

  Languages: C++, Java, Python

  Compatibility: > OpenCV 2.0

  Author: Ana Huamán

  In this tutorial, you will use features2d to calculate feature vectors.

• Feature Matching with FLANN

  Languages: C++, Java, Python

  Compatibility: > OpenCV 2.0

  Author: Ana Huamán

  In this tutorial, you will use the FLANN library to make a fast matching.

• Features2D + Homography to find a known object

  Languages: C++, Java, Python

  Compatibility: > OpenCV 2.0

  Author: Ana Huamán

  In this tutorial, you will use features2d and calib3d to detect an object in a scene.

• Detection of planar objects

  Languages: C++

  Compatibility: > OpenCV 2.0

  Author: Victor Eruhimov

  You will use features2d and calib3d modules for detecting known planar objects in scenes.

• AKAZE local features matching

  Languages: C++, Java, Python

  Compatibility: > OpenCV 3.0

  Author: Fedor Morozov

  Using AKAZE local features to find correspondence between two images.

• AKAZE and ORB planar tracking

  Languages: C++

  Compatibility: > OpenCV 3.0

  Author: Fedor Morozov

  Using AKAZE and ORB for planar object tracking.

• Basic concepts of the homography explained with code

  Languages: C++, Java, Python

  Compatibility: > OpenCV 3.0

  This tutorial will explain the basic concepts of the homography with some demonstration codes.