private void AddBlobPanel(int row, Rectangle rectangle)
{
BlobPanel blobPanel = new BlobPanel();
blobPanel.RowIndex = row;
//blobPanel.Location = new Point(rectangle.X - 2, rectangle.Y - 2);
//blobPanel.Size = new Size(rectangle.Width + 4, rectangle.Height + 4);
rectangle.Inflate(3,3);
blobPanel.Location = new Point(rectangle.X, rectangle.Y);
blobPanel.Size = new Size(rectangle.Width, rectangle.Height);
blobPanel.SelectedChanged += blobPanel_SelectedChanged;
blobPanel.DeleteRequest += blobPanel_DeleteRequest;
pictureBox1.Controls.Add(blobPanel);
}
/// <summary>
/// Write the blob image to a text file.
/// </summary>
private void ExportBlob(StreamWriter sw, int key, BlobPanel blob)
{
// Get the blob image.
Bitmap newImage = CropBlob(blob, pictureBox1.Image);
WriteImageToFile(sw, key, newImage);
// Write a rotated version.
newImage = CropBlob(blob, pictureBox1.Image, 10);
WriteImageToFile(sw, key, newImage);
// Write another rotated version (to the other dir).
newImage = CropBlob(blob, pictureBox1.Image, -10);
WriteImageToFile(sw, key, newImage);
}
private Vector GetBlobPixels(BlobPanel blob)
{
// Get the blob image.
Bitmap newImage = CropBlob(blob, pictureBox1.Image);
// Create the vector (Add the bias term).
Vector xs = new DenseVector(newImage.Width * newImage.Height + 1);
xs[0] = 1;
// Loop thru the image pixels and add them to the vector.
for (int i = 0; i < newImage.Height; i++)
{
for (int j = 0; j < newImage.Width; j++)
{
Color pixel = newImage.GetPixel(i, j);
xs[1 + i*newImage.Width + j] = pixel.R;
}
}
return xs;
}
/// <summary>
/// Crop the blob from the image
/// </summary>
private Bitmap CropBlob(BlobPanel blob, System.Drawing.Image source, int rotationAngel = 0)
{
// Create the target image, this is a squared image.
int size = Math.Max(blob.Height, blob.Width);
Bitmap newImage = new Bitmap(size, size, PixelFormat.Format24bppRgb);
// Get the graphics object of the image.
Graphics g = Graphics.FromImage(newImage);
// Create the background color to use (the image we create is larger than the blob (as we squared it)
// so this would be the color of the excess areas.
Color bColor = Color.FromArgb((int)txtExtractedBackColor.Value, (int)txtExtractedBackColor.Value, (int)txtExtractedBackColor.Value);
// Fill back color.
g.FillRectangle(new SolidBrush(bColor), 0, 0, size, size);
// Now we clip the blob from the PictureBox image.
g.DrawImage(source, new Rectangle(0, 0, blob.Width, blob.Height), blob.Left, blob.Top, blob.Width, blob.Height, GraphicsUnit.Pixel);
g.Dispose();
if (rotationAngel != 0)
{
RotateBilinear filter = new RotateBilinear(rotationAngel, true);
filter.FillColor = bColor;
// apply the filter
newImage = filter.Apply(newImage);
}
// Resize the image.
ResizeBilinear resizefilter = new ResizeBilinear((int)txtExportSize.Value, (int)txtExportSize.Value);
newImage = resizefilter.Apply(newImage);
return newImage;
}