Closing operator from Mathematical Morphology.
Closing morphology operator equals to
Applied to binary image, the filter may be used connect or fill objects. Since dilatation is used first, it may connect/fill object areas. Then erosion restores objects. But since dilatation may connect something before, erosion may not remove after that because of the formed connection.
See documentation to Erosion and Dilatation classes for more information and list of supported pixel formats.
Sample usage:
// create filter Closing filter = new Closing( ); // apply the filter filter.Apply( image ); Initial image:
Result image:
private string reconhecerCaptcha(Image img)
{
Bitmap imagem = new Bitmap(img);
imagem = imagem.Clone(new Rectangle(0, 0, img.Width, img.Height), System.Drawing.Imaging.PixelFormat.Format24bppRgb);
Erosion erosion = new Erosion();
Dilatation dilatation = new Dilatation();
Invert inverter = new Invert();
ColorFiltering cor = new ColorFiltering();
cor.Blue = new AForge.IntRange(200, 255);
cor.Red = new AForge.IntRange(200, 255);
cor.Green = new AForge.IntRange(200, 255);
Opening open = new Opening();
BlobsFiltering bc = new BlobsFiltering();
Closing close = new Closing();
GaussianSharpen gs = new GaussianSharpen();
ContrastCorrection cc = new ContrastCorrection();
bc.MinHeight = 10;
FiltersSequence seq = new FiltersSequence(gs, inverter, open, inverter, bc, inverter, open, cc, cor, bc, inverter);
pictureBox.Image = seq.Apply(imagem);
string reconhecido = OCR((Bitmap)pictureBox.Image);
return reconhecido;
}
private void cBFilters_SelectedIndexChanged(object sender, EventArgs e)
{
Bitmap pictureTransform = (Bitmap)pbChoose.Image;
if ((string)cBFilters.SelectedItem == "HSL_Filter")
{
AForge.Imaging.Filters.SaturationCorrection filter = new SaturationCorrection(0.1);
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
if ((string)cBFilters.SelectedItem == "Mediana")
{
AForge.Imaging.Filters.Median filter = new Median();
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
/*if ((string)cBFilters.SelectedItem == "Fourier_Transformation")
{
Complex[] dst = new Complex[n];
AForge.Math.FourierTransform filter = AForge.Math.FourierTransform.DFT();// .FromBitmap(pictureTransform);
Bitmap newImage = filter.Apply();
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}*/
if ((string)cBFilters.SelectedItem == "Binarization")
{
pictureTransform = Grayscale.CommonAlgorithms.BT709.Apply(pictureTransform);
Threshold threshold = new Threshold(127);
threshold.ApplyInPlace(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = pictureTransform;
}
if ((string)cBFilters.SelectedItem == "Grayscale")
{
AForge.Imaging.Filters.Grayscale filter = new AForge.Imaging.Filters.Grayscale(0.2125, 0.7154, 0.0721);
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
if ((string)cBFilters.SelectedItem == "FillHoles")
{
pictureTransform = Grayscale.CommonAlgorithms.BT709.Apply(pictureTransform);
Threshold threshold = new Threshold(127);
threshold.ApplyInPlace(pictureTransform);
AForge.Imaging.Filters.FillHoles filter = new AForge.Imaging.Filters.FillHoles();
filter.MaxHoleHeight = 5;
filter.MaxHoleWidth = 15;
filter.CoupledSizeFiltering = false;
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
if ((string)cBFilters.SelectedItem == "Opening")
{
AForge.Imaging.Filters.Opening filter = new AForge.Imaging.Filters.Opening();
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
if ((string)cBFilters.SelectedItem == "Closing")
{
AForge.Imaging.Filters.Closing filter = new AForge.Imaging.Filters.Closing();
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
if ((string)cBFilters.SelectedItem == "Erosion")
{
AForge.Imaging.Filters.Erosion filter = new AForge.Imaging.Filters.Erosion();
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
if ((string)cBFilters.SelectedItem == "Dilatation")
{
AForge.Imaging.Filters.Dilatation filter = new AForge.Imaging.Filters.Dilatation();
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
if ((string)cBFilters.SelectedItem == "Edges")
{
AForge.Imaging.Filters.Edges filter = new AForge.Imaging.Filters.Edges();
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
}
private Bitmap processImage(Bitmap img)
{
//Generate closing structural element
short[,] structEl = new short[13, 13];
for (int i = 0; i < 13; i++)
for (int j = 0; j < 13; j++)
if ((i - 6) * (i - 6) + (j - 6) * (j - 6) < 64)
structEl[i, j] = 1;
else
structEl[i, j] = -1;
//Initialize filters
HSLFiltering borderFind = new HSLFiltering();
Closing borderClose = new Closing(structEl);
Invert invert = new Invert();
Grayscale grayFilter = new Grayscale(0, 0, 1.0);
Threshold bwFilter = new Threshold(1);
PointedColorFloodFill blackout = new PointedColorFloodFill();
blackout.Tolerance = Color.FromArgb(0, 0, 0);
blackout.FillColor = Color.FromArgb(0, 0, 0);
ExtractBiggestBlob getgame = new ExtractBiggestBlob();
getgame.OriginalImage = new Bitmap(img);
GrayscaleToRGB colorFilter = new GrayscaleToRGB();
//Color determined with ColorProbe.
borderFind.Hue = new IntRange(190, 200);
borderFind.Saturation = new Range(0.6f, 0.8f);
borderFind.Luminance = new Range(0.6f, 1.0f);
borderFind.ApplyInPlace(img);
borderClose.ApplyInPlace(img);
img = grayFilter.Apply(img);
bwFilter.ApplyInPlace(img);
invert.ApplyInPlace(img);
img = colorFilter.Apply(img);
blackout.StartingPoint = new AForge.IntPoint(0, 0);
blackout.ApplyInPlace(img);
img = getgame.Apply(img);
int tilesx = img.Width / 56;
int tilesy = img.Height / 56;
int offsetx = 56 * (int)(tilesx - img.Width / 56.0);
int offsety = 56 * (int)(tilesy - img.Height / 56.0);
if ((Math.Abs(offsetx) > 11) || (Math.Abs(offsety) > 11))
throw new GameNotFoundException();
List<IntPoint> corners = new List<IntPoint>();
Dictionary<IntPoint, Bitmap> tiles = new Dictionary<IntPoint, Bitmap>();
SimpleQuadrilateralTransformation tileXtract = new SimpleQuadrilateralTransformation();
for (int j = 0; j < tilesy; j++)
for (int i = 0; i < tilesx; i++)
{
corners.Add(new IntPoint(offsetx + i * 56, offsety + j * 56 ));
corners.Add(new IntPoint(offsetx + i * 56, offsety + (j + 1) * 56 - 1));
corners.Add(new IntPoint(offsetx + (i + 1) * 56 - 1, offsety + (j + 1) * 56 - 1));
corners.Add(new IntPoint(offsetx + (i + 1) * 56 - 1, offsety + j * 56 ));
tileXtract.SourceQuadrilateral = corners;
tiles.Add(new IntPoint(i, j), tileXtract.Apply(img));
corners.Clear();
}
img = (Bitmap)Properties.Resources.ResourceManager.GetObject("cb");
/*Graphics g = Graphics.FromImage(img);
Pen bluePen = new Pen(Color.Blue, 2);
for (int i = 0, n = blobs.Length; i < n; i++)
{
List<IntPoint> edgePoints = blobCounter.GetBlobsEdgePoints(blobs[i]);
if (edgePoints.Count > 1)
{
List<IntPoint> corners = PointsCloud.FindQuadrilateralCorners(edgePoints);
g.DrawPolygon(bluePen, ToPointsArray(corners));
}
}
bluePen.Dispose();
g.Dispose();
*/
return img;
}
private void button_threshold_Click(object sender, EventArgs e)
{
if (obraz_w_greyscale != null)
{
if (textBox1.TextLength != 0)
{
int prog = Convert.ToInt32(textBox1.Text);
Threshold binearyzacja = new Threshold(prog);
obraz_po_progowaniu = (Bitmap)binearyzacja.Apply(obraz_w_greyscale);
Invert odwracanie = new Invert();
obraz_po_progowaniu = odwracanie.Apply(obraz_po_progowaniu);
AForge.Imaging.Filters.Closing zamykanie = new AForge.Imaging.Filters.Closing();
obraz_po_progowaniu = zamykanie.Apply(obraz_po_progowaniu);
pictureBox1.Image = obraz_po_progowaniu;
pictureBox1.Update();
}
button_area_Click(null, null);
}
}
public void ClosingMorfology()
{
Grayscale grayScaler = new Grayscale(0.2125, 0.7154, 0.0721);
Closing closingFilter = new Closing();
_digit = closingFilter.Apply(grayScaler.Apply(new Bitmap(_digit)));
}
/// <summary>
/// Initializes a new instance of the <see cref="BottomHat"/> class.
/// </summary>
///
/// <param name="se">Structuring element to pass to <see cref="Closing"/> operator.</param>
///
public BottomHat(short[,] se) : this()
{
closing = new Closing(se);
}
private void cBFilters_SelectedIndexChanged(object sender, EventArgs e)
{
Bitmap pictureTransform = (Bitmap)pbChoose.Image;
if ((string)cBFilters.SelectedItem == "HSL_Filter")
{
AForge.Imaging.Filters.SaturationCorrection filter = new SaturationCorrection(0.1);
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
if ((string)cBFilters.SelectedItem == "Mediana")
{
AForge.Imaging.Filters.Median filter = new Median();
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
/*if ((string)cBFilters.SelectedItem == "Fourier_Transformation")
* {
* Complex[] dst = new Complex[n];
*
* AForge.Math.FourierTransform filter = AForge.Math.FourierTransform.DFT();// .FromBitmap(pictureTransform);
* Bitmap newImage = filter.Apply();
* pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
* pBNew.Image = newImage;
* }*/
if ((string)cBFilters.SelectedItem == "Binarization")
{
pictureTransform = Grayscale.CommonAlgorithms.BT709.Apply(pictureTransform);
Threshold threshold = new Threshold(127);
threshold.ApplyInPlace(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = pictureTransform;
}
if ((string)cBFilters.SelectedItem == "Grayscale")
{
AForge.Imaging.Filters.Grayscale filter = new AForge.Imaging.Filters.Grayscale(0.2125, 0.7154, 0.0721);
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
if ((string)cBFilters.SelectedItem == "FillHoles")
{
pictureTransform = Grayscale.CommonAlgorithms.BT709.Apply(pictureTransform);
Threshold threshold = new Threshold(127);
threshold.ApplyInPlace(pictureTransform);
AForge.Imaging.Filters.FillHoles filter = new AForge.Imaging.Filters.FillHoles();
filter.MaxHoleHeight = 5;
filter.MaxHoleWidth = 15;
filter.CoupledSizeFiltering = false;
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
if ((string)cBFilters.SelectedItem == "Opening")
{
AForge.Imaging.Filters.Opening filter = new AForge.Imaging.Filters.Opening();
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
if ((string)cBFilters.SelectedItem == "Closing")
{
AForge.Imaging.Filters.Closing filter = new AForge.Imaging.Filters.Closing();
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
if ((string)cBFilters.SelectedItem == "Erosion")
{
AForge.Imaging.Filters.Erosion filter = new AForge.Imaging.Filters.Erosion();
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
if ((string)cBFilters.SelectedItem == "Dilatation")
{
AForge.Imaging.Filters.Dilatation filter = new AForge.Imaging.Filters.Dilatation();
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
if ((string)cBFilters.SelectedItem == "Edges")
{
AForge.Imaging.Filters.Edges filter = new AForge.Imaging.Filters.Edges();
Bitmap newImage = filter.Apply(pictureTransform);
pbChoose.SizeMode = PictureBoxSizeMode.CenterImage;
pBNew.Image = newImage;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="BottomHat"/> class.
/// </summary>
///
/// <param name="se">Structuring element to pass to <see cref="Closing"/> operator.</param>
///
public BottomHat( short[,] se ) : this( )
{
closing = new Closing( se );
}
// closing
private void button55_Click(object sender, EventArgs e)
{
///////////// ini 객체 생성 시작 /////////////////////////////////////////////////////
//현재 프로그램이 실행되고 있는정보 가져오기: 디버깅 모드라면 bin/debug/프로그램명.exe
FileInfo exefileinfo = new FileInfo(@"C:\Program Files\PLOCR\PLOCR.exe");
string pathini = exefileinfo.Directory.FullName.ToString(); //프로그램 실행되고 있는데 path 가져오기
string fileName = @"\PLOCRconfig.ini"; // 환경설정 파일명
string filePath = pathini + fileName; //ini 파일 경로
DocumentAnalysis.IniUtil ini = new DocumentAnalysis.IniUtil(filePath); // 만들어 놓았던 iniUtil 객체 생성(생성자 인자로 파일경로 정보 넘겨줌)
//////////// ini 객체 생성 끝 /////////////////////////////////////////////////////////
Bitmap source = Global.source;
Bitmap tmp = source;
// convert to 24 bits per pixel
source = imageProcess.Clone(tmp, PixelFormat.Format24bppRgb);
// delete old image
tmp.Dispose();
// create filter
Closing filter = new Closing();
// apply the filter
filter.Apply(source);
Global.source = source;
pictureBox1.Image = Global.source;
pictureBox1.Refresh();
textBox26.Text = (int.Parse(textBox24.Text) + 1).ToString();
ini.SetIniValue("closing", "closing횟수", textBox26.Text.ToString());
}