opencv/doc/tutorials/imgproc/shapedescriptors/hull/hull.markdown

Convex Hull {#tutorial_hull}
===========

@tableofcontents

@prev_tutorial{tutorial_find_contours}
@next_tutorial{tutorial_bounding_rects_circles}

|    |    |
| -: | :- |
| Original author | Ana Huamán |
| Compatibility | OpenCV >= 3.0 |

Goal
----

In this tutorial you will learn how to:

-   Use the OpenCV function @ref cv::convexHull

Theory
------

Code
----

@add_toggle_cpp
This tutorial code's is shown lines below. You can also download it from
[here](https://github.com/opencv/opencv/tree/5.x/samples/cpp/tutorial_code/ShapeDescriptors/hull_demo.cpp)
@include samples/cpp/tutorial_code/ShapeDescriptors/hull_demo.cpp
@end_toggle

@add_toggle_java
This tutorial code's is shown lines below. You can also download it from
[here](https://github.com/opencv/opencv/tree/5.x/samples/java/tutorial_code/ShapeDescriptors/hull/HullDemo.java)
@include samples/java/tutorial_code/ShapeDescriptors/hull/HullDemo.java
@end_toggle

@add_toggle_python
This tutorial code's is shown lines below. You can also download it from
[here](https://github.com/opencv/opencv/tree/5.x/samples/python/tutorial_code/ShapeDescriptors/hull/hull_demo.py)
@include samples/python/tutorial_code/ShapeDescriptors/hull/hull_demo.py
@end_toggle

Explanation
-----------

Result
------

Here it is:

![Original](images/Hull_Original_Image.jpg)
![Result](images/Hull_Result.jpg)
Doxygen tutorials: basic structure 2014-11-27 20:39:05 +08:00			`Convex Hull {#tutorial_hull}`
			`===========`

Added TOC to most of tutorials 2020-12-08 00:13:54 +08:00			`@tableofcontents`

Update documentation and samples 2018-08-03 02:22:58 +08:00			`@prev_tutorial{tutorial_find_contours}`
			`@next_tutorial{tutorial_bounding_rects_circles}`

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 OpenCV function @ref cv::convexHull`

			`Theory`
			`------`

			`Code`
			`----`

Add Java and Python code for the following imgproc tutorials: Finding contours in your image, Convex Hull, Creating Bounding boxes and circles for contours, Creating Bounding rotated boxes and ellipses for contours, Image Moments, Point Polygon Test. 2018-06-11 05:57:11 +08:00			`@add_toggle_cpp`
Doxygen tutorials: basic structure 2014-11-27 20:39:05 +08:00			`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/ShapeDescriptors/hull_demo.cpp)`
Doxygen: replaced @includelineno by @include to enable copy-pasting 2015-04-29 15:31:53 +08:00			`@include samples/cpp/tutorial_code/ShapeDescriptors/hull_demo.cpp`
Add Java and Python code for the following imgproc tutorials: Finding contours in your image, Convex Hull, Creating Bounding boxes and circles for contours, Creating Bounding rotated boxes and ellipses for contours, Image Moments, Point Polygon Test. 2018-06-11 05:57:11 +08:00			`@end_toggle`

			`@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/ShapeDescriptors/hull/HullDemo.java)`
Add Java and Python code for the following imgproc tutorials: Finding contours in your image, Convex Hull, Creating Bounding boxes and circles for contours, Creating Bounding rotated boxes and ellipses for contours, Image Moments, Point Polygon Test. 2018-06-11 05:57:11 +08:00			`@include samples/java/tutorial_code/ShapeDescriptors/hull/HullDemo.java`
			`@end_toggle`

			`@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/ShapeDescriptors/hull/hull_demo.py)`
Add Java and Python code for the following imgproc tutorials: Finding contours in your image, Convex Hull, Creating Bounding boxes and circles for contours, Creating Bounding rotated boxes and ellipses for contours, Image Moments, Point Polygon Test. 2018-06-11 05:57:11 +08:00			`@include samples/python/tutorial_code/ShapeDescriptors/hull/hull_demo.py`
			`@end_toggle`
Doxygen tutorials: basic structure 2014-11-27 20:39:05 +08:00
			`Explanation`
			`-----------`

			`Result`
			`------`

Doxygen tutorials: warnings cleared 2014-11-28 00:54:13 +08:00			`Here it is:`
Doxygen tutorials: basic structure 2014-11-27 20:39:05 +08:00
Doxygen tutorials: warnings cleared 2014-11-28 00:54:13 +08:00			`![Original](images/Hull_Original_Image.jpg)`
			`![Result](images/Hull_Result.jpg)`