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2013-01-17 12:16:16 -0600 asked a question ORB how-to.

I need to program my bot so that it is able to find an object that is it asked to pickup and bring it to the commanded position. I have tried simple img processing techniques like filtering, contour finding. that doesn't seems to work well. I want to use ORB feature extractor. here are a sample images. object of interest is the ball. In short how do I train my bot to pickup balls or other objects any sample program will be helpful. how to use ORB. provide an example if possible. is there a way to use it in C-api thanx in advance

ball 01 ball 02

Edit: what will be the best or better choice for detecting objects like this. I am able to process the image into more of this form[look at here… but the final output of the process changes with ball color(I updated the hue values for red color) illumination and environment for example [ ]. is there a unified pipeline to detect the ball and other simple objects without much texture in it??

2013-01-15 06:31:46 -0600 asked a question locate the circle in the image..

hoe to locate the circle in the image.. this is the picture captured.image to be processed after some series of preprocessing this is the resultafter some preprocessing operations

how to detect which one of the following is the circle i.e ball ???

2013-01-12 08:08:51 -0600 asked a question extraction of intensity maxima minima from hue plane

i hav extracted the hue information from a rgb image and stored it into a separate image file. now I need to find min and max values present in this image. how do i do that. here is my code do that. what is wrong with it. it throws seg fault. the image I supply to this code is the hue image extracted from the rgb image

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2012-12-22 12:31:56 -0600 commented answer Which one is preferred to use? C or C++

how soon can we expect for C interface to disappear. coz I love C for its simplicity, which C++ ultimately lacks

2012-12-22 12:30:51 -0600 commented answer Which one is preferred to use? C or C++

what does it has to do with C++ performance? is the C++ codes are getting optimized, and C portions are left to die?

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2012-12-22 04:00:52 -0600 asked a question Which one is preferred to use? C or C++

I'm a C programmer. I prefer C over C++ most of the time but I have seen benchmarks of OpenCV performing well when C++ is used. Why should I choose C++ and why is it faster than C? When I say C++ is faster than C, the scope is confined to OpenCV. Do the C portions of OpenCV become deprecated??