private void removeBlankPlaces()
{
Shrink shrinkFilter = new Shrink(Color.FromArgb(255, 255, 255));
ResizeNearestNeighbor resizeFilter = new ResizeNearestNeighbor(0, 0);
Bitmap tempImage = shrinkFilter.Apply(_processedImage.Bitmap);
// image dimenstoin
int width = _processedImage.Width;
int height = _processedImage.Height;
// shrinked image dimension
int tw = tempImage.Width;
int th = tempImage.Height;
// resize factors
float fx = (float)width / (float)tw;
float fy = (float)height / (float)th;
if (fx > fy)
{
fx = fy;
}
// set new size of shrinked image
int nw = (int)Math.Round(fx * tw);
int nh = (int)Math.Round(fy * th);
resizeFilter.NewWidth = nw;
resizeFilter.NewHeight = nh;
// resize image
Bitmap tempImage2 = resizeFilter.Apply(tempImage);
Image <Bgr, Byte> imageCV = new Image <Bgr, byte>(tempImage2);
_processedImage = imageCV.Mat;
}
public static Bitmap Shrink(Bitmap Imagem)
{
Shrink filter = new Shrink();
Imagem = Imagem.Clone(new Rectangle(0, 0, Imagem.Width, Imagem.Height), System.Drawing.Imaging.PixelFormat.Format24bppRgb);
Imagem = filter.Apply(Imagem);
return(Imagem);
}
/// <summary>
/// Crop the image's borders
/// </summary>
/// <param name="image">Reference to a Bitmap</param>
private void Crop(ref System.Drawing.Bitmap image)
{
Shrink filter = new Shrink(Color.White);
try
{
image = filter.Apply(image);
}
catch (Exception) { }
}
public Bitmap GetImage(bool invalidate)
{
if (image == null)
{
ClearImage();
}
// scale image
if (scaleImage)
{
// shrink image
Bitmap tempImage = shrinkFilter.Apply(image);
// image dimenstoin
int width = image.Width;
int height = image.Height;
// shrinked image dimension
int tw = tempImage.Width;
int th = tempImage.Height;
// resize factors
float fx = (float)width / (float)tw;
float fy = (float)height / (float)th;
if (fx > fy)
{
fx = fy;
}
// set new size of shrinked image
int nw = (int)Math.Round(fx * tw);
int nh = (int)Math.Round(fy * th);
resizeFilter.NewWidth = nw;
resizeFilter.NewHeight = nh;
// resize image
Bitmap tempImage2 = resizeFilter.Apply(tempImage);
//
Brush whiteBrush = new SolidBrush(Color.White);
// create graphics
Graphics g = Graphics.FromImage(image);
// fill rectangle
g.FillRectangle(whiteBrush, 0, 0, width, height);
int x = 0;
int y = 0;
if (nw > nh)
{
y = (height - nh) / 2;
}
else
{
x = (width - nw) / 2;
}
g.DrawImage(tempImage2, x, y, nw, nh);
g.Dispose();
whiteBrush.Dispose();
// release temp images
tempImage.Dispose();
tempImage2.Dispose();
}
// should we repaint the control
if (invalidate)
{
Invalidate();
}
return(image);
}