我正在开发一个可以识别基本形状和颜色的应用程序。识别形状部分已完成现在我想识别该形状的颜色。我正在使用EmguCV库。有人帮我吗？
答案 0 :(得分：0)
Shape Detection and Color Filtering in Emgu CV
这是C＃中编辑过的代码（根据前面提到的visual basic视频）
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Emgu.CV;
using Emgu.CV.CvEnum;
using Emgu.CV.Structure;
using Emgu.CV.UI;
namespace EmguCVShapeDetector
{
public partial class Form1 : Form
{
//---Variables--//
bool blnFirstTimeInResizeEvent = true;
int OriginalFormWidth;
int OriginalFormHeight;
int OriginalTableLayoutPanelWidth;
int OriginalTableLayoutPanelHeight;
Capture capwebcam;
bool webCamCapturingInProcess = false;
Image<Bgr, Byte> imgOriginal;
Image<Bgr, Byte> imgSmoothed;
Image<Gray, Byte> imgGrayColorFiltered;
Image<Gray, Byte> imgCanny;
Image<Bgr, Byte> imgCircles;
Image<Bgr, Byte> imgLines;
Image<Bgr, Byte> imgTrisRectsPolys;
Double dbMinBlue = 0.0;
double dbMinGreen = 0.0;
double dbMinRed = 0.0;
double dbMaxBlue = 0.0;
double dbMaxGreen = 0.0;
double dbMaxRed = 0.0;
public Form1()
{
InitializeComponent();
OriginalFormWidth = this.Width;
OriginalFormHeight = this.Height;
OriginalTableLayoutPanelWidth = tlpLebelsAndImageBoxes.Width;
OriginalTableLayoutPanelHeight = tlpLebelsAndImageBoxes.Height;
}
private void Form1_Load(object sender, EventArgs e)
{
for (int i = 0; i <= 255; i++)
{
cmbMinBlue.Items.Add(i);
cmbMinGreen.Items.Add(i);
cmbMinRed.Items.Add(i);
cmbMaxBlue.Items.Add(i+1);
cmbMaxGreen.Items.Add(i+1);
cmbMaxRed.Items.Add(i+1);
}
cmbMinBlue.Text = "0";
cmbMinGreen.Text = "0";
cmbMinRed.Text = "0";
cmbMaxBlue.Text = "1";
cmbMaxGreen.Text = "1";
cmbMaxRed.Text = "1";
}
private void Form1_Resize(object sender, EventArgs e)
{
if(blnFirstTimeInResizeEvent == true)
{
blnFirstTimeInResizeEvent = false;
}
else
{
tlpLebelsAndImageBoxes.Width = this.Width - (OriginalTableLayoutPanelWidth);
tlpLebelsAndImageBoxes.Height = this.Height - (OriginalTableLayoutPanelHeight);
}
}
private void radImageFile_CheckedChanged(object sender, EventArgs e)
{
if(radImageFile.Checked == true)
{
if(webCamCapturingInProcess == true)
{
Application.Idle -= ProcessImageAndUpdateGUI;
webCamCapturingInProcess = false;
}
ibOriginal.Image = null;
ibGrayColorFilter.Image = null;
ibCanny.Image = null;
ibCircles.Image = null;
ibLines.Image = null;
ibTrianglesAndPolys.Image = null;
lblFile.Visible = true;
txtFile.Visible = true;
btnFile.Visible = true;
}
}
private void radWebCam_CheckedChanged(object sender, EventArgs e)
{
if(radWebCam.Checked == true)
{
try
{
capwebcam = new Capture();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString());
}
Application.Idle += ProcessImageAndUpdateGUI;
webCamCapturingInProcess = true;
lblFile.Visible = false;
txtFile.Visible = false;
btnFile.Visible = false;
}
}
private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
if(capwebcam != null)
{
capwebcam.Dispose();
}
}
private void btnFile_Click(object sender, EventArgs e)
{
if (ofdFile.ShowDialog() == DialogResult.OK)
{
Image inputImage = Image.FromFile(ofdFile.FileName);
txtFile.Text = ofdFile.FileName.ToString();
}
}
private void chbDrawCirclesOnOriginalImage_CheckedChanged(object sender, EventArgs e)
{
if(webCamCapturingInProcess == false)
{
ProcessImageAndUpdateGUI(new object(), new EventArgs());
}
}
private void chbDrawLinesOnOriginalImage_CheckedChanged(object sender, EventArgs e)
{
if (webCamCapturingInProcess == false)
{
ProcessImageAndUpdateGUI(new object(), new EventArgs());
}
}
private void chbDrawTrianglesAndPolygansOnOriginalImage_CheckedChanged(object sender, EventArgs e)
{
if (webCamCapturingInProcess == false)
{
ProcessImageAndUpdateGUI(new object(), new EventArgs());
}
}
private void chbFillterOnColor_CheckedChanged(object sender, EventArgs e)
{
if(chbFillterOnColor.Checked == true)
{
lblBlue.Visible = true;
lblGreen.Visible = true;
lblRed.Visible = true;
lblMin.Visible = true;
lblMax.Visible = true;
cmbMinBlue.Visible = true;
cmbMinGreen.Visible = true;
cmbMinRed.Visible = true;
cmbMaxBlue.Visible = true;
cmbMaxGreen.Visible = true;
cmbMaxRed.Visible = true;
lblGrayColorFilter.Text = "gray (color filtered):";
ProcessImageAndUpdateGUI(new object(), new EventArgs());
}
else if (chbFillterOnColor.Checked == false)
{
lblBlue.Visible = false;
lblGreen.Visible = false;
lblRed.Visible = false;
lblMin.Visible = false;
lblMax.Visible = false;
cmbMinBlue.Visible = false;
cmbMinGreen.Visible = false;
cmbMinRed.Visible = false;
cmbMaxBlue.Visible = false;
cmbMaxGreen.Visible = false;
cmbMaxRed.Visible = false;
lblGrayColorFilter.Text = "gray:";
ProcessImageAndUpdateGUI(new object(), new EventArgs());
}
}
private void txtFile_TextChanged(object sender, EventArgs e)
{
txtFile.SelectionStart = txtFile.Text.Length;
}
private void cmbMinBlue_SelectedIndexChanged(object sender, EventArgs e)
{
if(chbFillterOnColor.Checked == true && txtFile.Text != "")
{
dbMinBlue = Convert.ToDouble(cmbMinBlue.Text);
ProcessImageAndUpdateGUI(new object(), new EventArgs());
}
}
private void cmbMinGreen_SelectedIndexChanged(object sender, EventArgs e)
{
if (chbFillterOnColor.Checked == true && txtFile.Text != "")
{
dbMinGreen = Convert.ToDouble(cmbMinGreen.Text);
ProcessImageAndUpdateGUI(new object(), new EventArgs());
}
}
private void cmbMinRed_SelectedIndexChanged(object sender, EventArgs e)
{
if (chbFillterOnColor.Checked == true && txtFile.Text != "")
{
dbMinRed = Convert.ToDouble(cmbMinRed.Text);
ProcessImageAndUpdateGUI(new object(), new EventArgs());
}
}
private void cmbMaxBlue_SelectedIndexChanged(object sender, EventArgs e)
{
if (chbFillterOnColor.Checked == true && txtFile.Text != "")
{
dbMaxBlue = Convert.ToDouble(cmbMaxBlue.Text);
ProcessImageAndUpdateGUI(new object(), new EventArgs());
}
}
private void cmbMaxGreen_SelectedIndexChanged(object sender, EventArgs e)
{
if (chbFillterOnColor.Checked == true && txtFile.Text != "")
{
dbMaxGreen = Convert.ToDouble(cmbMaxGreen.Text);
ProcessImageAndUpdateGUI(new object(), new EventArgs());
}
}
private void cmbMaxRed_SelectedIndexChanged(object sender, EventArgs e)
{
if (chbFillterOnColor.Checked == true && txtFile.Text != "")
{
dbMaxRed = Convert.ToDouble(cmbMaxRed.Text);
ProcessImageAndUpdateGUI(new object(), new EventArgs());
}
}
private void cmbMinBlue_Leave(object sender, EventArgs e)
{
if (Convert.ToInt32(cmbMinBlue.Text) < 0 || Convert.ToInt32(cmbMinBlue.Text) > 255)
{
cmbMinBlue.Text = "0";
}
cmbMinBlue_SelectedIndexChanged(new object(), new EventArgs());
}
private void cmbMinGreen_Leave(object sender, EventArgs e)
{
if (Convert.ToInt32(cmbMinGreen.Text) < 0 || Convert.ToInt32(cmbMinGreen.Text) > 255)
{
cmbMinGreen.Text = "0";
}
cmbMinGreen_SelectedIndexChanged(new object(), new EventArgs());
}
private void cmbMinRed_Leave(object sender, EventArgs e)
{
if (Convert.ToInt32(cmbMinRed.Text) < 0 || Convert.ToInt32(cmbMinRed.Text) > 255)
{
cmbMinRed.Text = "0";
}
cmbMinRed_SelectedIndexChanged(new object(), new EventArgs());
}
private void cmbMaxBlue_Leave(object sender, EventArgs e)
{
if (Convert.ToInt32(cmbMaxBlue.Text) < 1 || Convert.ToInt32(cmbMaxBlue.Text) > 256)
{
cmbMaxBlue.Text = "1";
}
cmbMaxBlue_SelectedIndexChanged(new object(), new EventArgs());
}
private void cmbMaxGreen_Leave(object sender, EventArgs e)
{
if (Convert.ToInt32(cmbMaxGreen.Text) < 1 || Convert.ToInt32(cmbMaxGreen.Text) > 256)
{
cmbMaxGreen.Text = "1";
}
cmbMaxGreen_SelectedIndexChanged(new object(), new EventArgs());
}
private void cmbMaxRed_Leave(object sender, EventArgs e)
{
if (Convert.ToInt32(cmbMaxRed.Text) < 1 || Convert.ToInt32(cmbMaxRed.Text) > 256)
{
cmbMaxRed.Text = "1";
}
cmbMaxRed_SelectedIndexChanged(new object(), new EventArgs());
}
private void cmbMinBlue_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode.Equals(Keys.Enter) || e.KeyCode.Equals(Keys.Return))
{
e.SuppressKeyPress = true;
lblOriginal.Focus();
}
}
private void cmbMinGreen_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode.Equals(Keys.Enter) || e.KeyCode.Equals(Keys.Return))
{
e.SuppressKeyPress = true;
lblOriginal.Focus();
}
}
private void cmbMinRed_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode.Equals(Keys.Enter) || e.KeyCode.Equals(Keys.Return))
{
e.SuppressKeyPress = true;
lblOriginal.Focus();
}
}
private void cmbMaxBlue_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode.Equals(Keys.Enter) || e.KeyCode.Equals(Keys.Return))
{
e.SuppressKeyPress = true;
lblOriginal.Focus();
}
}
private void cmbMaxGreen_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode.Equals(Keys.Enter) || e.KeyCode.Equals(Keys.Return))
{
e.SuppressKeyPress = true;
lblOriginal.Focus();
}
}
private void cmbMaxRed_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode.Equals(Keys.Enter) || e.KeyCode.Equals(Keys.Return))
{
e.SuppressKeyPress = true;
lblOriginal.Focus();
}
}
void ProcessImageAndUpdateGUI(object sender, EventArgs e)
{
if(radImageFile.Checked == true)
{
try
{
imgOriginal = new Image<Bgr,Byte>(txtFile.Text);
}
catch (Exception ex)
{
return;
}
}
else if(radWebCam.Checked == true)
{
try
{
imgOriginal = capwebcam.QueryFrame();
}
catch (Exception ex)
{
return;
}
}
if(imgOriginal == null)
{
return;
}
imgSmoothed = imgOriginal.PyrDown().PyrUp();
imgSmoothed._SmoothGaussian(3);
if(chbFillterOnColor.Checked == true)
{
imgGrayColorFiltered = imgSmoothed.InRange(new Bgr(dbMinBlue,dbMinGreen,dbMinRed),new Bgr(dbMaxBlue,dbMaxGreen,dbMaxRed));
imgGrayColorFiltered = imgGrayColorFiltered.PyrDown().PyrUp();
imgGrayColorFiltered._SmoothGaussian(3);
}
else if(chbFillterOnColor.Checked == false)
{
imgGrayColorFiltered = imgSmoothed.Convert<Gray, Byte>();
}
Gray grayCannyThreshold = new Gray(160);
Gray grayCircleAccumThreshold = new Gray(100);
Gray grayThreshLinking = new Gray(80);
imgCanny = imgGrayColorFiltered.Canny(grayCannyThreshold, grayThreshLinking);
imgCircles = imgOriginal.CopyBlank();
imgLines = imgOriginal.CopyBlank();
imgTrisRectsPolys = imgOriginal.CopyBlank();
Double dblAccumRes = 2.0;
Double dblMinDistBetweenCircles = imgGrayColorFiltered.Height / 4;
int intMinRadius = 10;
int intMaxRadius = 400;
CircleF[] circles = imgGrayColorFiltered.HoughCircles(grayCannyThreshold, grayCircleAccumThreshold, dblAccumRes, dblMinDistBetweenCircles, intMinRadius, intMaxRadius)[0];
foreach(CircleF circle in circles)
{
imgCircles.Draw(circle, new Bgr(Color.Red),2);
if(chbDrawCirclesOnOriginalImage.Checked == true)
{
imgCircles.Draw(circle, new Bgr(Color.Red), 2);
}
}
Double dblRhoRes = 1.0;
Double dblThetaRes = 4.0 *(Math.PI/180.0);
int intThreshold = 20;
Double dblMinLineWidth = 30.0;
Double dblMinGapBetweenLines = 10.0;
LineSegment2D[] lines = imgCanny.Clone().HoughLinesBinary(dblRhoRes, dblThetaRes, intThreshold, dblMinLineWidth, dblMinGapBetweenLines)[0];
foreach(LineSegment2D line in lines)
{
imgLines.Draw(line, new Bgr(Color.DarkGreen),2);
if(chbDrawLinesOnOriginalImage.Checked == true)
{
imgOriginal.Draw(line, new Bgr(Color.DarkGreen),2);
}
}
Contour<Point> contours = imgCanny.FindContours();
List<Triangle2DF> lstTreangles = new List<Triangle2DF>();
List<MCvBox2D> lstRectangles = new List<MCvBox2D>();
List<Contour<Point>> lstPoluhons = new List<Contour<Point>>();
while(contours != null)
{
Contour<Point> contour = contours.ApproxPoly(10.0);
if(contour.Area > 250.0)
{
if(contour.Total == 3)
{
Point[] ptPoints = contour.ToArray();
lstTreangles.Add(new Triangle2DF(ptPoints[0],ptPoints[1],ptPoints[2]));
}
else if(contour.Total >= 4 && contour.Total <= 6)
{
Point[] ptPoints = contour.ToArray();
Boolean blnIsRectangle = true;
if(contour.Total == 4)
{
LineSegment2D[] ls2dEdges = PointCollection.PolyLine(ptPoints, true);
for(int i = 0; i< ls2dEdges.Length -1; i++)
{
Double dblAngle = Math.Abs(ls2dEdges[(i+1) % ls2dEdges.Length].GetExteriorAngleDegree(ls2dEdges[i]));
if(dblAngle < 80.0 || dblAngle > 100.0)
{
blnIsRectangle = false;
}
}
}
else
{
blnIsRectangle = false;
}
if(blnIsRectangle)
{
lstRectangles.Add(contour.GetMinAreaRect());
}
else
{
lstPoluhons.Add(contour);
}
}
}
contours = contours.HNext;
}
foreach(Triangle2DF triangle in lstTreangles)
{
imgTrisRectsPolys.Draw(triangle, new Bgr(Color.Yellow),2);
if(chbDrawTrianglesAndPolygansOnOriginalImage.Checked == true)
{
imgOriginal.Draw(triangle, new Bgr(Color.Yellow),2);
}
}
foreach(MCvBox2D rect in lstRectangles)
{
imgTrisRectsPolys.Draw(rect, new Bgr(Color.Blue),2);
if(chbDrawTrianglesAndPolygansOnOriginalImage.Checked == true)
{
imgOriginal.Draw(rect, new Bgr(Color.Blue),2);
}
}
foreach(Contour<Point> contPoly in lstPoluhons)
{
imgTrisRectsPolys.Draw(contPoly, new Bgr(Color.Gray),2);
if(chbDrawTrianglesAndPolygansOnOriginalImage.Checked == true)
{
imgOriginal.Draw(contPoly, new Bgr(Color.Gray),2);
}
}
ibOriginal.Image = imgOriginal;
ibGrayColorFilter.Image = imgGrayColorFiltered;
ibCanny.Image = imgCanny;
ibLines.Image = imgLines;
ibTrianglesAndPolys.Image = imgTrisRectsPolys;
}
}
}
我认为此代码对您的项目很有帮助。