/// <summary>
/// Gets the largest blob
/// </summary>
/// <param name="imgSrc"></param>
/// <param name="imgRender"></param>
private void FilterByMaximumBlob(IplImage imgSrc, IplImage imgDst)
{
CvBlobs blobs = new CvBlobs();
imgDst.Zero();
blobs.Label(imgSrc);
CvBlob max = blobs.GreaterBlob();
if (max == null)
{
return;
}
blobs.FilterByArea(max.Area, max.Area);
blobs.FilterLabels(imgDst);
}
private static void FilterByMaximalBlob(IplImage imgSrc, IplImage imgDst)
{
using (CvBlobs blobs = new CvBlobs())
using (IplImage imgLabelData = new IplImage(imgSrc.Size, CvBlobLib.DepthLabel, 1))
{
imgDst.Zero();
blobs.Label(imgSrc, imgLabelData);
CvBlob max = blobs[blobs.GreaterBlob()];
if (max == null)
{
return;
}
blobs.FilterByArea(max.Area, max.Area);
blobs.FilterLabels(imgLabelData, imgDst);
}
}
public static IplImage test(IplImage target)
{
CvBlobs blobs = new CvBlobs();
IplImage lableImg = new IplImage(target.Size, CvBlobLib.DepthLabel, 1);
IplImage retImg = new IplImage(target.Size, BitDepth.U8, 1);
blobs.Label(target);
CvBlob max = blobs.GreaterBlob();
if (max == null)
{
return(target);
}
blobs.FilterByArea(max.Area, max.Area);
blobs.FilterLabels(retImg);
return(retImg);
}
/// <summary>
/// ラベリングにより最大の面積の領域を残す
/// </summary>
/// <param name="imgSrc"></param>
/// <param name="imgRender"></param>
private void FilterByMaximalBlob(IplImage imgSrc, IplImage imgDst)
{
CvBlobs blobs = new CvBlobs();
imgDst.Zero();
blobs.Label(imgSrc);
CvBlob max = blobs.GreaterBlob();
if (max == null)
return;
blobs.FilterByArea(max.Area, max.Area);
blobs.FilterLabels(imgDst);
}
/// <summary>
/// Draw a binary image with the blobs that have been given. (cvFilterLabels)
/// </summary>
/// <param name="blobs">List of blobs to be drawn.</param>
/// <param name="imgOut">Output binary image (depth=IPL_DEPTH_8U and nchannels=1).</param>
public static void FilterLabels(CvBlobs blobs, Mat imgOut)
{
if (blobs == null)
throw new ArgumentNullException(nameof(blobs));
blobs.FilterLabels(imgOut);
}
/// <summary>
/// Draw a binary image with the blobs that have been given. (cvFilterLabels)
/// </summary>
/// <param name="blobs">List of blobs to be drawn.</param>
/// <param name="imgOut">Output binary image (depth=IPL_DEPTH_8U and nchannels=1).</param>
public static void FilterLabels(CvBlobs blobs, IplImage imgOut)
{
if (blobs == null)
throw new ArgumentNullException("blobs");
blobs.FilterLabels(imgOut);
}
