hello there,
I am using ROS to develop a system in my research. So, I am retrieving video images from the robot and I want to draw a circle on the screen to the object that the robot recognizes. I have the code for the object recognition and the position of the object with respect to the video , I was thinking of using OpenCV, but I don't know if they are compatible with pyqt and python?
any help
thank you
Yes, you can do it with opencv's drawing functions. Use cvbridge to create cv::Mat from sensor_msg::image without copying.
If you use pyqt anyway, why not use the drawing functions of qt? You can convert the images to QImage (e.g. as it is done here (c++) from an opencv image) and use a QPainter, constructed with the image as parameter to use drawEllipse.
Hi Shamma,
If your problem is just drawing circles, you could do it with opencv. Take a look at the face detection example, you will see how to draw circles.
Hope this helps,
Guido
Look here:
http://www.dasskript.com/wiki/augmented_reality_mit_opencv_pyqt_und_opengl
It written in German, but I think you can get the point.
Asked: May 25 '11
Seen: 273 times
Last updated: Sep 02 '11
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