public void GetSuperpixelImages(Image <Gray, Byte> image, string dir, string imageName, int regionSize = 20, float ratio = 10.0f)
{
var pixelator = new Emgu.CV.XImgproc.SupperpixelSLIC(image, Emgu.CV.XImgproc.SupperpixelSLIC.Algorithm.SLICO, regionSize, ratio);
pixelator.Iterate();
var labels = new Mat();
pixelator.GetLabels(labels);
var labelsArray = new int[labels.Rows, labels.Cols];
labelsArray = (int[, ])labels.GetData();
var superpixelColors = new int[pixelator.NumberOfSuperpixels];
var pixelCount = new int[pixelator.NumberOfSuperpixels];
var imageArray = new byte[image.Width, image.Height, 1];
imageArray = image.Data;
for (int i = 0; i < labels.Rows; i++)
{
for (int j = 0; j < labels.Cols; j++)
{
var label = labelsArray[i, j];
superpixelColors[label] += imageArray[i, j, 0];
pixelCount[label] += 1;
}
}
for (int i = 0; i < superpixelColors.Length; i++)
{
if (pixelCount[i] != 0)
{
superpixelColors[i] /= pixelCount[i];
}
}
var maskedImage = new Image <Bgr, Byte>(image.Width, image.Height);
// var boundaries = new Image<Bgr, Byte>(image.Width, image.Height);
//image.CopyTo(maskedImage);
CvInvoke.CvtColor(image, maskedImage, Emgu.CV.CvEnum.ColorConversion.Gray2Bgr);
var mask = new Image <Gray, Byte>(image.Width, image.Height);
var colorMask = new Image <Bgr, Byte>(image.Width, image.Height);
colorMask = colorMask.Add(new Bgr(Color.Red));
pixelator.GetLabelContourMask(mask);
colorMask = colorMask.And(colorMask, mask);
maskedImage = maskedImage.And(maskedImage, mask.Not());
maskedImage = maskedImage.Add(colorMask);
maskedImage.Save(dir + @"\" + imageName + "_borders.png");
var superpixelImage = new Image <Gray, Byte>(image.Width, image.Height);
for (int i = 0; i < image.Width; i++)
{
for (int j = 0; j < image.Height; j++)
{
var pixelNum = labelsArray[i, j];
superpixelImage[i, j] = new Gray(superpixelColors[pixelNum]);
}
}
superpixelImage.Save(dir + @"\" + imageName + "_meanColors.png");
}
public int[] GetSuperpixelFeatures(string imageName, int regionSize = 20, float ratio = 10.0f)
{
var image = new Image <Gray, Byte>(SourceDirectory + @"\" + imageName);
var pixelator = new Emgu.CV.XImgproc.SupperpixelSLIC(image, Emgu.CV.XImgproc.SupperpixelSLIC.Algorithm.SLICO, regionSize, ratio);
pixelator.Iterate();
var labels = new Mat();
pixelator.GetLabels(labels);
var labelsArray = new int[labels.Rows, labels.Cols];
labelsArray = (int[, ])labels.GetData();
var superpixelColors = new int[pixelator.NumberOfSuperpixels];
var pixelCount = new int[pixelator.NumberOfSuperpixels];
var imageArray = new byte[image.Width, image.Height, 1];
imageArray = image.Data;
for (int i = 0; i < labels.Rows; i++)
{
for (int j = 0; j < labels.Cols; j++)
{
var label = labelsArray[i, j];
superpixelColors[label] += imageArray[i, j, 0];
pixelCount[label] += 1;
}
}
for (int i = 0; i < superpixelColors.Length; i++)
{
if (pixelCount[i] != 0)
{
superpixelColors[i] /= pixelCount[i];
}
}
return(superpixelColors);
}
