mirror/opencv
1
0
Fork 0
mirror of https://github.com/opencv/opencv.git synced 2024-12-15 09:49:13 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity
eab8eb8f3b
opencv/doc/tutorials/features2d/feature_detection/feature_detection.markdown

64 lines
2.0 KiB
Markdown
Raw Normal View History

Doxygen tutorials: basic structure
2014-11-27 20:39:05 +08:00
Feature Detection {#tutorial_feature_detection}
=================
Added TOC to most of tutorials
2020-12-08 00:13:54 +08:00
@tableofcontents
Add next and previous navigation links to all tutorials
2020-05-20 06:59:28 +08:00
@prev_tutorial{tutorial_corner_subpixels}
@next_tutorial{tutorial_feature_description}
doc: tutorial refactor
2020-12-05 06:46:00 +08:00
| | |
| -: | :- |
| Original author | Ana Huamán |
| Compatibility | OpenCV >= 3.0 |
Doxygen tutorials: basic structure
2014-11-27 20:39:05 +08:00
Goal
----
In this tutorial you will learn how to:
- Use the @ref cv::FeatureDetector interface in order to find interest points. Specifically:
Doxygen tutorials: support contrib, some minor changes
2014-12-02 00:22:04 +08:00
- Use the cv::xfeatures2d::SURF and its function cv::xfeatures2d::SURF::detect to perform the
Doxygen tutorials: basic structure
2014-11-27 20:39:05 +08:00
detection process
- Use the function @ref cv::drawKeypoints to draw the detected keypoints
Add Java and Python code for the following features2d tutorials: Harris corner detector, Shi-Tomasi corner detector, Creating your own corner detector, Detecting corners location in subpixels, Feature Detection, Feature Description, Feature Matching with FLANN, Features2D + Homography to find a known object. Use Lowe's ratio test to filter the matches.
2018-05-28 07:33:56 +08:00
\warning You need the <a href="https://github.com/opencv/opencv_contrib">OpenCV contrib modules</a> to be able to use the SURF features
(alternatives are ORB, KAZE, ... features).
Doxygen tutorials: basic structure
2014-11-27 20:39:05 +08:00
Theory
------
Code
----
Add Java and Python code for the following features2d tutorials: Harris corner detector, Shi-Tomasi corner detector, Creating your own corner detector, Detecting corners location in subpixels, Feature Detection, Feature Description, Feature Matching with FLANN, Features2D + Homography to find a known object. Use Lowe's ratio test to filter the matches.
2018-05-28 07:33:56 +08:00
@add_toggle_cpp
This tutorial code's is shown lines below. You can also download it from
Merge branch 4.x
2021-12-31 00:23:27 +08:00
[here](https://github.com/opencv/opencv/tree/5.x/samples/cpp/tutorial_code/features2D/feature_detection/SURF_detection_Demo.cpp)
Add Java and Python code for the following features2d tutorials: Harris corner detector, Shi-Tomasi corner detector, Creating your own corner detector, Detecting corners location in subpixels, Feature Detection, Feature Description, Feature Matching with FLANN, Features2D + Homography to find a known object. Use Lowe's ratio test to filter the matches.
2018-05-28 07:33:56 +08:00
@include samples/cpp/tutorial_code/features2D/feature_detection/SURF_detection_Demo.cpp
@end_toggle
Doxygen tutorials: basic structure
2014-11-27 20:39:05 +08:00
Add Java and Python code for the following features2d tutorials: Harris corner detector, Shi-Tomasi corner detector, Creating your own corner detector, Detecting corners location in subpixels, Feature Detection, Feature Description, Feature Matching with FLANN, Features2D + Homography to find a known object. Use Lowe's ratio test to filter the matches.
2018-05-28 07:33:56 +08:00
@add_toggle_java
This tutorial code's is shown lines below. You can also download it from
Merge branch 4.x
2021-12-31 00:23:27 +08:00
[here](https://github.com/opencv/opencv/tree/5.x/samples/java/tutorial_code/features2D/feature_detection/SURFDetectionDemo.java)
Add Java and Python code for the following features2d tutorials: Harris corner detector, Shi-Tomasi corner detector, Creating your own corner detector, Detecting corners location in subpixels, Feature Detection, Feature Description, Feature Matching with FLANN, Features2D + Homography to find a known object. Use Lowe's ratio test to filter the matches.
2018-05-28 07:33:56 +08:00
@include samples/java/tutorial_code/features2D/feature_detection/SURFDetectionDemo.java
@end_toggle
Doxygen tutorials: basic structure
2014-11-27 20:39:05 +08:00
Add Java and Python code for the following features2d tutorials: Harris corner detector, Shi-Tomasi corner detector, Creating your own corner detector, Detecting corners location in subpixels, Feature Detection, Feature Description, Feature Matching with FLANN, Features2D + Homography to find a known object. Use Lowe's ratio test to filter the matches.
2018-05-28 07:33:56 +08:00
@add_toggle_python
This tutorial code's is shown lines below. You can also download it from
Merge branch 4.x
2021-12-31 00:23:27 +08:00
[here](https://github.com/opencv/opencv/tree/5.x/samples/python/tutorial_code/features2D/feature_detection/SURF_detection_Demo.py)
Add Java and Python code for the following features2d tutorials: Harris corner detector, Shi-Tomasi corner detector, Creating your own corner detector, Detecting corners location in subpixels, Feature Detection, Feature Description, Feature Matching with FLANN, Features2D + Homography to find a known object. Use Lowe's ratio test to filter the matches.
2018-05-28 07:33:56 +08:00
@include samples/python/tutorial_code/features2D/feature_detection/SURF_detection_Demo.py
@end_toggle
Doxygen tutorials: warnings cleared
2014-11-28 00:54:13 +08:00
Doxygen tutorials: basic structure
2014-11-27 20:39:05 +08:00
Explanation
-----------
Result
------
Add Java and Python code for the following features2d tutorials: Harris corner detector, Shi-Tomasi corner detector, Creating your own corner detector, Detecting corners location in subpixels, Feature Detection, Feature Description, Feature Matching with FLANN, Features2D + Homography to find a known object. Use Lowe's ratio test to filter the matches.
2018-05-28 07:33:56 +08:00
-# Here is the result of the feature detection applied to the `box.png` image:
Doxygen tutorials: basic structure
2014-11-27 20:39:05 +08:00
Doxygen tutorials: cpp done
2014-11-28 21:21:28 +08:00
![](images/Feature_Detection_Result_a.jpg)
Doxygen tutorials: basic structure
2014-11-27 20:39:05 +08:00
Add Java and Python code for the following features2d tutorials: Harris corner detector, Shi-Tomasi corner detector, Creating your own corner detector, Detecting corners location in subpixels, Feature Detection, Feature Description, Feature Matching with FLANN, Features2D + Homography to find a known object. Use Lowe's ratio test to filter the matches.
2018-05-28 07:33:56 +08:00
-# And here is the result for the `box_in_scene.png` image:
Doxygen tutorials: basic structure
2014-11-27 20:39:05 +08:00
Doxygen tutorials: cpp done
2014-11-28 21:21:28 +08:00
![](images/Feature_Detection_Result_b.jpg)
Reference in New Issue Copy Permalink