Difference between revisions of "Objects recognition and position calculation (webcam)"
From robotica.unileon.es
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* Position of the corners of the object image in the scene. | * Position of the corners of the object image in the scene. | ||
| − | ===Utilization of new OpenCV library in ROS | + | ===Utilization of a new OpenCV library in ROS Electric=== |
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| + | The previous ''package'' needs the [http://opencv.org/ OpenCV] version 2.4.3 or higher, but [http://wiki.ros.org/ ROS] Electric has integrated the [http://opencv.org/ OpenCV] version 2.3.1. | ||
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Revision as of 16:27, 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.
Utilization of a new OpenCV library in ROS Electric
The previous package needs the OpenCV version 2.4.3 or higher, but ROS Electric has integrated the OpenCV version 2.3.1.
