Difference between revisions of "Objects recognition and position calculation (webcam)"
From robotica.unileon.es
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In the screenshot that is shown above, we can see how the recognized object is within a boundary box which coincide with the corners of the object image. | In the screenshot that is shown above, we can see how the recognized object is within a boundary box which coincide with the corners of the object image. | ||
| − | + | The program provides several data of each found object in the scene. We will use the next data: | |
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| + | * Width of the object image (number of pixels). | ||
| + | * Height of the object image (number of pixels). | ||
| + | * Position of the corners of the object image in the scene. | ||
| + | ===Utilization of new OpenCV library in ROS Elecric=== | ||
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| − | + | <!-- | |
Para poder compilar el anterior ''package'' necesitamos utilizar la versión 2.4.3, o posterior, de la librería [http://opencv.org/ OpenCV], pero en la versión "[http://wiki.ros.org/electric/Installation electric]" de [http://wiki.ros.org/ ROS] la versión que viene integrada de esta librería es la 2.3.1. Por esto vamos a instalar la versión 2.4.3 de [http://opencv.org/ OpenCV], configurar el ''package'' [http://wiki.ros.org/cv_bridge?distro=electric cv_bridge] y modificar el ''package'' [http://code.google.com/p/find-object/ find_object_2d] para que utilice esta nueva versión de la librería. | Para poder compilar el anterior ''package'' necesitamos utilizar la versión 2.4.3, o posterior, de la librería [http://opencv.org/ OpenCV], pero en la versión "[http://wiki.ros.org/electric/Installation electric]" de [http://wiki.ros.org/ ROS] la versión que viene integrada de esta librería es la 2.3.1. Por esto vamos a instalar la versión 2.4.3 de [http://opencv.org/ OpenCV], configurar el ''package'' [http://wiki.ros.org/cv_bridge?distro=electric cv_bridge] y modificar el ''package'' [http://code.google.com/p/find-object/ find_object_2d] para que utilice esta nueva versión de la librería. | ||
Revision as of 16:19, 30 December 2013
Objects recognition
We have used the package find_object_2d which has been develop by Mathieu Labbé (Université de Sherbrooke). The program can recognizes objects in the scene using an image of the object. The program has a graphical user interface which allow to capture an image of the scene and save it.
Screenshot find_object_2d
In the screenshot that is shown above, we can see how the recognized object is within a boundary box which coincide with the corners of the object image.
The program provides several data of each found object in the scene. We will use the next data:
- Width of the object image (number of pixels).
- Height of the object image (number of pixels).
- Position of the corners of the object image in the scene.
