Difference between revisions of "Objects recognition and position calculation (webcam)"
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===Utilization of a new OpenCV library in ROS Electric=== | ===Utilization of a new OpenCV library in ROS Electric=== | ||
| − | The previous ''package'' needs the [http://opencv.org/ OpenCV] version 2.4.3 or higher, but [http://wiki.ros.org/ ROS] Electric has | + | The previous ''package'' needs in order to compile the [http://opencv.org/ OpenCV] version 2.4.3 or higher, but [http://wiki.ros.org/ ROS] Electric has the [http://opencv.org/ OpenCV] version 2.3.1. We will |
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Revision as of 16:30, 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 in order to compile the OpenCV version 2.4.3 or higher, but ROS Electric has the OpenCV version 2.3.1. We will
