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POFilling holes inside a binary object
 

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    <p>I have a problem with filling white holes inside a black coins so that I can have only 0-255 binary image with filled black coins.. I have used Median filter to accomplish it but in that case connection bridge between coins grows and it goes impossible to recognize them after several times of erosion... So I need a simple floodFill like method in opencv</p> <p>Here is my image with holes:</p> <p><img src="https://i.stack.imgur.com/d1tAc.png" alt="enter image description here"></p> <p><strong>EDIT:</strong> floodfill like function must fill holes in big components without prompting X,Y coordinates as a seed...</p> <p>EDIT: I tried to use cvDrawContours function but I doesn't fill contours inside bigger ones.</p> <p>Here is my code:</p> <pre><code> CvMemStorage mem = cvCreateMemStorage(0); CvSeq contours = new CvSeq(); CvSeq ptr = new CvSeq(); int sizeofCvContour = Loader.sizeof(CvContour.class); cvThreshold(gray, gray, 150, 255, CV_THRESH_BINARY_INV); int numOfContours = cvFindContours(gray, mem, contours, sizeofCvContour, CV_RETR_CCOMP, CV_CHAIN_APPROX_SIMPLE); System.out.println("The num of contours: "+numOfContours); //prints 87, ok Random rand = new Random(); for (ptr = contours; ptr != null; ptr = ptr.h_next()) { Color randomColor = new Color(rand.nextFloat(), rand.nextFloat(), rand.nextFloat()); CvScalar color = CV_RGB( randomColor.getRed(), randomColor.getGreen(), randomColor.getBlue()); cvDrawContours(gray, ptr, color, color, -1, CV_FILLED, 8); } CanvasFrame canvas6 = new CanvasFrame("drawContours"); canvas6.showImage(gray); </code></pre> <p>Result: (you can see black holes inside each coin)</p> <p><img src="https://i.stack.imgur.com/baiy5.png" alt="enter image description here"></p>
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