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POHow to get x,y coordinates of extracted objects in javacv?
 

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  1. POHow to get x,y coordinates of extracted objects in javacv?
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    <p>Currently I am developing image processing project and I'm using javacv to develop image processing components. I was able to extract some interesting parts of a image and now I need to read the x and y coordinates of those objects. This is the image that I haveextracted</p> <p><img src="https://i.stack.imgur.com/Q7i84.png" alt="enter image description here"></p> <p>And I need to identify those objects and draw square around those objects. I went through some tutorials and try to identify objects using following code.</p> <pre><code> IplImage img="sourceimage"; CvSize sz = cvSize(img.width(), img.height()); IplImage gry=cvCreateImage(sz, img.depth(), 1); cvCvtColor(img, gry, CV_BGR2GRAY); cvThreshold(gry, gry, 200, 250, CV_THRESH_BINARY); CvMemStorage mem = CvMemStorage.create(); CvSeq contours = new CvSeq(); CvSeq ptr = new CvSeq(); cvFindContours(gry, mem, contours, Loader.sizeof(CvContour.class) , CV_RETR_CCOMP, CV_CHAIN_APPROX_SIMPLE, cvPoint(0,0)); CvRect boundbox; for (ptr = contours; ptr != null; ptr = ptr.h_next()) { boundbox = cvBoundingRect(ptr, 0); if(boundbox.height()&gt;10||boundbox.height()&gt;10){ cvRectangle( gry, cvPoint( boundbox.x(), boundbox.y() ), cvPoint( boundbox.x() + boundbox.width(), boundbox.y() + boundbox.height()),CvScalar.BLUE, 0, 0, 0 ); System.out.println(boundbox.x()+", "+boundbox.y()); } } cvShowImage("contures", gry); cvWaitKey(0); </code></pre> <p>But it doesn't draw as rectangle around the objects. I would like to know whether I can use cvFindContours method to identify those objects ? Please can some one explain how to archive my objective using javacv/opencv?</p>
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    1. COSo when you draw these rectangles how are they relative to the objects you have?
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    2. COWhy do ignore answers to your question??
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    3. CO@MahdeTo I need to know how to draw rectangle around these objects.
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