private void button2_Click(object sender, EventArgs e)
{
if (imgInput == null)
{
return;
}
try
{
var temp = imgInput.Convert <Gray, byte>().ThresholdBinary(new Gray(100), new Gray(255))
.Dilate(1).Erode(1);
Mat imgLabel = new Mat();
Mat stats = new Mat();
Mat centroids = new Mat();
var nLabels = CvInvoke.ConnectedComponentsWithStats(temp, imgLabel, stats, centroids);
imgCC = imgLabel.ToImage <Gray, byte>();
centroidPoints = new MCvPoint2D64f[nLabels];
centroids.CopyTo(centroidPoints);
statsop = new CCStatsOp[nLabels];
stats.CopyTo(statsop);
pictureBox2.Image = temp.Bitmap;
}
catch (Exception ee)
{
MessageBox.Show(ee.Message);
}
}
private int find_components(Mat edges, Mat Stats_Array, int max_components = 10, bool imshow = false)
{
int count, n, Components = 0;
//IOutputArray dilated_image = null, CCWS_Centroids_image = null, CCWS_lables_image = null; `
Mat dilated_image = new Mat();
Mat CCWS_lables_image = new Mat();
Mat CCWS_Centroids_image = new Mat();
//Mat CCWS_Output_Stats = new Mat();
Mat Kernel = CvInvoke.GetStructuringElement(Emgu.CV.CvEnum.ElementShape.Rectangle, new Size(3, 3), new Point(-1, -1));
// Dilate the image until there are just a few connected components.
count = max_components + 1;
n = 1;
//components = None;
Image <Gray, Byte> edges_temp = edges.ToImage <Gray, Byte>();
while (count > max_components)
{
n += 1;
//Dont divide into 255
CvInvoke.Dilate(edges_temp, dilated_image, Kernel, new Point(-1, -1), n, BorderType.Default, new MCvScalar(1.0));
Components = CvInvoke.ConnectedComponentsWithStats(dilated_image, CCWS_lables_image, Stats_Array, CCWS_Centroids_image, LineType.EightConnected);
count = Components;
}
CvInvoke.Imwrite("Edge_temp.jpg", edges_temp);
CvInvoke.Imwrite("Dilate.jpg", dilated_image);
Image <Gray, Byte> dilated_image_2 = dilated_image.ToImage <Gray, Byte>();
Console.WriteLine("{0} {1} ", dilated_image_2.Height, dilated_image_2.Width);
return(Components);
}
private void processToolStripMenuItem_Click(object sender, EventArgs e)
{
if (imgInput == null)
{
return;
}
try
{
var tempImg = imgInput.Convert <Gray, byte>().ThresholdBinary(new Gray(65), new Gray(255)).Dilate(1).Erode(1);
Mat mLabel = new Mat();
Mat stats = new Mat();
Mat centr = new Mat();
int nLabels = CvInvoke.ConnectedComponentsWithStats(tempImg, mLabel, stats, centr);
cc = mLabel.ToImage <Gray, byte>();
centrPoints = new MCvPoint2D64f[nLabels];
centr.CopyTo(centrPoints);
statsOP = new CCStatsOP[nLabels];
stats.CopyTo(statsOP);
pictureBox2.Image = tempImg.ToBitmap();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private double[][] GetvisibleData(Mat thresholdImg, Mat depthFrame)
{
//int minArea = Properties.UserSettings.Default.DataIndicatorMinimumArea;
// Get Connected component in the frame
using (Mat labels = new Mat(),
stats = new Mat(),
centroids = new Mat())
{
int n;
n = CvInvoke.ConnectedComponentsWithStats(thresholdImg, labels, stats, centroids, LineType.EightConnected, DepthType.Cv16U);
// Copy centroid points to point array
this.numbOfPoints = n - 2;
if (this.maxPoints < numbOfPoints)
{
return(null);
}
MCvPoint2D64f[] centroidPointsEmgu;
centroidPointsEmgu = new MCvPoint2D64f[n];
centroids.CopyTo(centroidPointsEmgu);
// Convert centoid points to jagged array
double[][] centroidPoints = GetCentroidPoints(centroidPointsEmgu, n);
// add z-coordinates to the tracked points
AssignZCoordinatesSurroundingBox(centroidPoints, stats, depthFrame);
cameraData.ScreenToWorldCoordinates(centroidPoints);
return(centroidPoints);
}
}
static bool CheckConnectedComponents(Mat grayImage)
{
// Threshold using Otsu bi-modal (black&white) assumption
Mat binaryImage = grayImage.Clone();
double otsuThreshold = CvInvoke.Threshold(grayImage, binaryImage, 0.0, 255.0, Emgu.CV.CvEnum.ThresholdType.Otsu | Emgu.CV.CvEnum.ThresholdType.Binary);
// dilate to connect two squares
Mat kernel = new Mat();
CvInvoke.Dilate(binaryImage, binaryImage, kernel, new Point(-1, -1), 1, Emgu.CV.CvEnum.BorderType.Constant, CvInvoke.MorphologyDefaultBorderValue);
CvInvoke.Imwrite("C:\\Temp\\Dilate.png", binaryImage, new KeyValuePair <Emgu.CV.CvEnum.ImwriteFlags, int>(Emgu.CV.CvEnum.ImwriteFlags.PngCompression, 3));
// compute number of labels (should be 2: 0 for background, 1 for white)
Mat labelRegion = new Mat(new System.Drawing.Size(binaryImage.Width, binaryImage.Height), Emgu.CV.CvEnum.DepthType.Cv32S, 1);
Mat statistics = new Mat();
Mat centroids = new Mat();
var numberOfLabels = CvInvoke.ConnectedComponentsWithStats(binaryImage, labelRegion, statistics, centroids, Emgu.CV.CvEnum.LineType.EightConnected, Emgu.CV.CvEnum.DepthType.Cv32S);
Console.WriteLine(" - Number of labels: %d\n", numberOfLabels);
if (numberOfLabels != 2)
{
return(false);
}
// compute centers of background and foreground (should also be close to image center)
Emgu.CV.Util.VectorOfPoint imageCentre = new Emgu.CV.Util.VectorOfPoint(new Point [] { new Point((int)(grayImage.Cols / 2.0f), (int)(grayImage.Rows / 2.0f)) });
Emgu.CV.Util.VectorOfPointF blackCenter = new Emgu.CV.Util.VectorOfPointF(new PointF[] { new PointF((float)centroids.GetDoubleValue(0, 0), (float)centroids.GetDoubleValue(0, 1)) });
Emgu.CV.Util.VectorOfPointF whiteCenter = new Emgu.CV.Util.VectorOfPointF(new PointF[] { new PointF((float)centroids.GetDoubleValue(1, 0), (float)centroids.GetDoubleValue(1, 1)) });
var blackCentroidDistance = CvInvoke.Norm(blackCenter, imageCentre, Emgu.CV.CvEnum.NormType.L2);
var whiteCentroidDistance = CvInvoke.Norm(whiteCenter, imageCentre, Emgu.CV.CvEnum.NormType.L2);
for (var label = 0; label < numberOfLabels; label++)
{
Console.WriteLine(" - [%d] centroid at (%.1lf,%.1lf)\n", label, (float)centroids.GetDoubleValue(label, 0), (float)centroids.GetDoubleValue(label, 1));
}
return(numberOfLabels == 2 && blackCentroidDistance < 10.0 && whiteCentroidDistance < 10.0);
}
private void test_connectedComponentsWithStats()
{
Mat frame = new Mat();
Mat Output_Label = new Mat();
Mat Output_Stats = new Mat();
Mat Output_Centroid = new Mat();
string path = "C:\\Users\\Asus\\Desktop\\Text_recognize\\Text_recognize\\bin\\Debug\\Edged_dilated.jpg";
frame = CvInvoke.Imread(path, ImreadModes.AnyColor);
CvInvoke.ConnectedComponentsWithStats(frame, Output_Label, Output_Stats, Output_Centroid, LineType.EightConnected);
Console.WriteLine(Output_Stats.Height);
Console.WriteLine(Output_Stats.Width);
Image <Gray, Byte> Output_Stats_im = Output_Stats.ToImage <Gray, Byte>();
Console.ReadLine();
}
public EdgeAlogorithm(string ImageFilePath)
{
Mat src = CvInvoke.Imread(ImageFilePath, ImreadModes.Color);
Mat dst = CvInvoke.Imread(ImageFilePath, ImreadModes.Color);
Mat OtsuImage = CvInvoke.Imread(ImageFilePath, ImreadModes.Color);
CvInvoke.GaussianBlur(src, src, new System.Drawing.Size(3, 3), 0, 0); // 平滑濾波
CvInvoke.BilateralFilter(src, dst, 9, 30, 30); // 雙邊濾波
Mat dst1 = CvInvoke.Imread(ImageFilePath, ImreadModes.Color);
Mat dst2 = CvInvoke.Imread(ImageFilePath, ImreadModes.Color);
CvInvoke.Canny(dst, dst1, 10, 100, 3); // Canny Edge Decteion
CvInvoke.Threshold(dst1, dst2, 128, 255, ThresholdType.BinaryInv); //反轉影像，讓邊緣呈現黑線
Mat GraylevelImage = CvInvoke.Imread(ImageFilePath, ImreadModes.Color);
CvInvoke.CvtColor(src, GraylevelImage, ColorConversion.Rgb2Gray);
CvInvoke.Threshold(GraylevelImage, OtsuImage, 0, 255, ThresholdType.Otsu);
Mat labels = CvInvoke.Imread(ImageFilePath, ImreadModes.Color), stats = CvInvoke.Imread(ImageFilePath, ImreadModes.Color), centroids = CvInvoke.Imread(ImageFilePath, ImreadModes.Color);
int nccomps = CvInvoke.ConnectedComponentsWithStats(OtsuImage, labels, stats, centroids);
List <uint[]> colors;
colors = new List <uint[]>();
colors.Add(new uint[] { 0, 0, 0 });
for (int loopnum = 1; loopnum < nccomps; loopnum++)
{
Random r = new Random();
if (stats.GetData(loopnum, 4)[0] < 200)
{
colors.Add(new uint[3] {
0, 0, 0
});
}
else
{
colors.Add(new uint[3] {
(uint)r.Next(0, 256), (uint)r.Next(0, 256), (uint)r.Next(0, 256)
});
}
}
//var mat = new Mat(200, 200, DepthType.Cv64F, 3);
for (int row = 0; row < src.Rows; row++)
{
for (int col = 0; col < src.Cols; col++)
{
src.SetValue(row, col, (byte)col);
var value = src.GetValue(row, col);
//Console.WriteLine("Value = " + value);
/*if (value != 255 && Test < 50)
* {
* OtsuImage.SetValue(row, col, (byte)255);
* Test++;
* //System.Console.ReadKey();
* }*/
}
}
ImageContour imagecontour = new ImageContour();
Mat ImageContourImage = imagecontour.ImageContourMethod(OtsuImage);
Step1 = dst;
Step2 = dst2;
Step3 = OtsuImage;
ContourImage = ImageContourImage;
/*
* String win1 = "Canny_1"; //The name of the window
* CvInvoke.NamedWindow(win1); //Create the window using the specific name
*
* String win2 = "Canny_2"; //The name of the window
* CvInvoke.NamedWindow(win2); //Create the window using the specific name
*
* String win3 = "OtsuImage"; //The name of the window
* CvInvoke.NamedWindow(win3); //Create the window using the specific name
*
* String win4 = "OtsuImage_ImageContourMethod"; //The name of the window
* CvInvoke.NamedWindow(win4); //Create the window using the specific name
*
* CvInvoke.Imshow(win1, dst); //Show the image
* CvInvoke.Imshow(win2, dst2); //Show the image
* CvInvoke.Imshow(win3, OtsuImage); //Show the image
* CvInvoke.Imshow(win4, ImageContourImage); //Show the image
* CvInvoke.WaitKey(0); //Wait for the key pressing event
* CvInvoke.DestroyWindow(win1); //Destroy the window if key is pressed
* CvInvoke.DestroyWindow(win2); //Destroy the window if key is pressed
* CvInvoke.DestroyWindow(win3); //Destroy the window if key is pressed
* CvInvoke.DestroyWindow(win4); //Destroy the window if key is pressed
*/
}
public bool processImages()
{
collectImmages(startDir);
IEdgeFilter filter = new KirschEdgeFilter();
int threshold_value = 150; //0-255
for (int i = 0; i < filePaths.Length; i++)
{
string aimDirThis = aimDir + "/res" + i + ".png";
string aimDirThisPre = aimDir + "/respre" + i + ".png";
Image original = Image.FromFile((filePaths[i]));
Bitmap resized = new Bitmap(original, new Size(aimWidth, aimHeight));
Bitmap greyscale = MakeGrayscale3(resized);
MemoryStream outStream = new MemoryStream();
imageProcessor.Load(greyscale);
imageProcessor.DetectEdges(filter, false);
imageProcessor.Save(aimDir + "/temp" + "/res" + i + ".png");
imageProcessor.Save(outStream);
//Als nächstes eine Binärisierung mit Threshhold auf dem Kanten Bild
//Dann alles im greyscale Bild nur Pixel behalten, die im Binär = 1
Image <Gray, Byte> img = new Image <Gray, Byte>(aimDir + "/temp" + "/res" + i + ".png");
img = img.ThresholdBinary(new Gray(threshold_value), new Gray(255)).Dilate(1).Erode(1);
var labels = new Mat();
var stats = new Mat();
var centroids = new Mat();
var nLabels = CvInvoke.ConnectedComponentsWithStats(img, labels, stats, centroids);
int biggestIndex = 0;
int biggestArea = 0;
int[] statsData = new int[stats.Rows * stats.Cols];
stats.CopyTo(statsData); // Inhalt der 2-D Matrix in 1D Array umwandeln
//Suche größter weißer Bereich
for (int j = 5; j < statsData.Length; j = j + 5) //erste Component ist meistens das Schwarze, kann deswegen ignoriert werden
{
var area = statsData[j + 4];
if (area > biggestArea)
{
biggestArea = area;
biggestIndex = j;
}
}
/*
* var x = statsData[i * stats.Cols + 0];
* var y = statsData[i * stats.Cols + 1];
* var width = statsData[i * stats.Cols + 2];
* var height = statsData[i * stats.Cols + 3];
* var area = statsData[i * stats.Cols + 4];
*/
//Bitmap source = greyscale;
Bitmap edges = new Bitmap(outStream);
int componentX = statsData[biggestIndex + 0];
int componentY = statsData[biggestIndex + 1];
int componentWidth = statsData[biggestIndex + 2];
int componentHeight = statsData[biggestIndex + 3];
Bitmap CroppedColor = cropping(componentX, componentY, componentWidth, componentHeight, resized, true);
Bitmap CroppedImage = cropping(componentX, componentY, componentWidth, componentHeight, greyscale, false);
string color = determineColor(CroppedColor);
CroppedImage.Save(aimDir + "/res" + i + color + ".png", ImageFormat.Png);
//CroppedColor.Save(aimDir + "/resC" + i + color + ".png", ImageFormat.Png);
edges = null;
CroppedImage = null;
img = null;
}
return(true);
}
