doc/tutorials/features2d/trackingmotion/generic_corner_detector/generic_corner_detector.markdown

   1 Creating your own corner detector {#tutorial_generic_corner_detector}
   2 =================================
   3
   4 @prev_tutorial{tutorial_good_features_to_track}
   5 @next_tutorial{tutorial_corner_subpixels}
   6
   7
   8 Goal
   9 ----
  10
  11 In this tutorial you will learn how to:
  12
  13 -   Use the OpenCV function @ref cv::cornerEigenValsAndVecs to find the eigenvalues and eigenvectors
  14     to determine if a pixel is a corner.
  15 -   Use the OpenCV function @ref cv::cornerMinEigenVal to find the minimum eigenvalues for corner
  16     detection.
  17 -   Implement our own version of the Harris detector as well as the Shi-Tomasi detector, by using
  18     the two functions above.
  19
  20 Theory
  21 ------
  22
  23 Code
  24 ----
  25
  26 @add_toggle_cpp
  27 This tutorial code's is shown lines below. You can also download it from
  28 [here](https://github.com/opencv/opencv/tree/3.4/samples/cpp/tutorial_code/TrackingMotion/cornerDetector_Demo.cpp)
  29
  30 @include samples/cpp/tutorial_code/TrackingMotion/cornerDetector_Demo.cpp
  31 @end_toggle
  32
  33 @add_toggle_java
  34 This tutorial code's is shown lines below. You can also download it from
  35 [here](https://github.com/opencv/opencv/tree/3.4/samples/java/tutorial_code/TrackingMotion/generic_corner_detector/CornerDetectorDemo.java)
  36
  37 @include samples/java/tutorial_code/TrackingMotion/generic_corner_detector/CornerDetectorDemo.java
  38 @end_toggle
  39
  40 @add_toggle_python
  41 This tutorial code's is shown lines below. You can also download it from
  42 [here](https://github.com/opencv/opencv/tree/3.4/samples/python/tutorial_code/TrackingMotion/generic_corner_detector/cornerDetector_Demo.py)
  43
  44 @include samples/python/tutorial_code/TrackingMotion/generic_corner_detector/cornerDetector_Demo.py
  45 @end_toggle
  46
  47 Explanation
  48 -----------
  49
  50 Result
  51 ------
  52
  53 ![](images/My_Harris_corner_detector_Result.jpg)
  54
  55 ![](images/My_Shi_Tomasi_corner_detector_Result.jpg)