Moravec算子提取特征点.doc

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.IO;using System.Drawing.Imaging;namespace 课程作业3_bk20113268 public partial class Form1 : Form public Form1() InitializeComponent(); / / 打开图像 / / / private void button1_Click(object sender, EventArgs e) /设置文件的类型 openFileDialog1.Filter = *.jpg,*.jpeg,*.bmp,*.gif,*.ico,*.png,*.tif,*.wmf|*.jpg;*.jpeg;*.bmp;*.gif;*.ico;*.png;*.tif;*.wmf; if (openFileDialog1.ShowDialog() = DialogResult.OK) /打开文件对话框 /根据文件的路径创建Image对象 Image myImage = System.Drawing.Image.FromFile(openFileDialog1.FileName); pictureBox1.Image = myImage; /显示打开的图片 pictureBox1.Height = myImage.Height; pictureBox1.Width = myImage.Width; this.button2.Enabled = true; / / 为数据表表头添加行号 / / / private void dataGridView1_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e) try /添加行号 SolidBrush v_SolidBrush = new SolidBrush(dataGridView1.RowHeadersDefaultCellStyle.ForeColor); int v_LineNo = 0; v_LineNo = e.RowIndex + 1; string v_Line = v_LineNo.ToString(); e.Graphics.DrawString(v_Line, e.InheritedRowStyle.Font, v_SolidBrush, e.RowBounds.Location.X + 15, e.RowBounds.Location.Y + 5); catch (Exception ex) MessageBox.Show(添加行号时发生错误，错误信息： + ex.Message, 操作失败); / / 提取特征点 / / / private void button2_Click(object sender, EventArgs e) Image myImage = System.Drawing.Image.FromFile(openFileDialog1.FileName); pictureBox1.Image = myImage; /显示打开的图片 toolStripProgressBar1.Visible = true; /进度条可视 toolStripProgressBar1.Maximum = 7; /设置进度条最大长度值 toolStripProgressBar1.Value = 0; /设置进度条当前值 toolStripProgressBar1.Step = 1; /设置进度条步长 toolStripProgressBar1.Value += toolStripProgressBar1.Step; /进度条前进 int Var_H = pictureBox1.Image.Height; /获取图象的高度 int Var_W = pictureBox1.Image.Width; /获取图象的宽度 Bitmap Var_bmp = (Bitmap)pictureBox1.Image; /根据图象的大小创建Bitmap对象 double, huiduzhi = new doubleVar_W, Var_H; /用于存储各点灰度值 for (int i = 0; i Var_W; i+) for (int j = 0; j Var_H; j+) Color tem_color = Var_bmp.GetPixel(i, j); /获取当前像素的颜色值 huiduzhii, j = tem_color.R * 0.299 + tem_color.G * 0.587 + tem_color.B * 0.114; /各点灰度值 toolStripProgressBar1.Value += toolStripProgressBar1.Step; double, xingquzhi = new doubleVar_W, Var_H; /用于存储各点兴趣值 for (int i = 2; i Var_W - 2; i+) for (int j = 2; j Var_H - 2; j+) double V1 = 0; for (int m = 0; m 4; m+) V1 = V1 + Math.Pow(huiduzhii - 2 + m, j - huiduzhii - 1 + m, j, 2); /计算V1方向相邻像素灰度差平方和 double V2 = 0; for (int m = 0; m 4; m+) V2 = V2 + Math.Pow(huiduzhii - 2 + m, j - 2 + m - huiduzhii - 1 + m, j - 1 + m, 2); /计算V2方向相邻像素灰度差平方和 double V3 = 0; for (int m = 0; m 4; m+) V3 = V3 + Math.Pow(huiduzhii, j - 2 + m - huiduzhii, j - 1 + m, 2); /计算V3方向相邻像素灰度差平方和 double V4 = 0; for (int m = 0; m 4; m+) V4 = V4 + Math.Pow(huiduzhii - 2 + m, j + 2 - m - huiduzhii - 1 + m, j + 1 - m, 2); /计算V4方向相邻像素灰度差平方和 xingquzhii, j = Math.Min(Math.Min(Math.Min(V1, V2), V3), V4); /从V1、V2、V3、V4中取最小值作为该点兴趣值 toolStripProgressBar1.Value += toolStripProgressBar1.Step; double sum=0; for (int i = 0; i Var_W; i+) for (int j = 0; j 100) c = 0; double yuzhi = pingjunzhi * zeng; /设定阈值 double, jianding = new doubleVar_W, Var_H; for (int i = 0; i Var_W; i+) for (int j = 0; j Var_H; j+) if (xingquzhii, j = yuzhi) jiandingi, j = 0; /选取兴趣值大于阈值的点作为特征候选点，其他点兴趣值归零 else jiandingi, j = 1; houxuan+; int, tezhengzhi1 = new inthouxuan, 2; /假定一个数组能容纳所有点皆为特征点的像素坐标矩阵 int yuzhimuban = 5; /定义阈值模板 int mubanbanchuang = 2; for (int i = mubanbanchuang; i Var_W - mubanbanchuang; i = i + yuzhimuban) for (int j = mubanbanchuang; j Var_H - mubanbanchuang; j = j + yuzhimuban) double MAX = 0; /假定5*5模板最大值起始值为第一个元素值 int a = 0; /设a为最大值行 int b = 0; /设b为最大值列 for (int m = 0; m yuzhimuban; m+) for (int n = 0; n yuzhimuban; n+) if (jiandingi - mubanbanchuang + m, j - mubanbanchuang + n = 1) if (MAX xingquzhii - mubanbanchuang + m, j - mubanbanchuang + n) MAX = xingquzhii - mubanbanchuang + m, j - mubanbanchuang + n; /获取5*5模板中最大值 a = i - mubanbanchuang + m; /获取最大值列 b = j - mubanbanchuang + n; /获取最大值行 else a = 0; b = 0; if (a != 0) & (b != 0) tezhengzhi1c, 0 = a; /存储特征点列 tezhengzhi1c, 1 = b; /存储特征点行 c+; /每有一个既不为0也不重复的最大值特征点数目加一 tezhengzhi = tezhengzhi1; zeng += 1; toolStripProgressBar1.Value += toolStripProgressBar1.Step; toolStripProgressBar1.Value += toolStripProgressBar1.Step; int, tezhengdian2 = new intc, 2; /定义一个数组存储像素坐标 for (int i = 0; i c; i+) for (int j = 0; j 2; j+) tezhengdian2i, j = tezhengzhii,j; tezheng = tezhengdian2; Image img = pictureBox1.Image; /将pictureBox1中图像存储入另一个变量 Bitmap bmp = new Bitmap(img.Width, img.Height); /创建Bitmap对象 Graphics g = Graphics.FromImage(bmp); /创建Graphics对象 g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic; /设置高质量双三次插值法 g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; /设置高质量,低速度呈现平滑程度 g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality; /设置绘制到此 Graphics 的合成图像的呈现质量 g.DrawImage(img, 0, 0, img.Width, img.Height); /以img为原本重新于（0,0）点绘制 g.Dispose(); /释放资源 for (int i = 0; i c; i+) Graphics myGraphics = Graphics.FromImage(bmp); /创建Graphics对象 myGraphics.DrawLine(new Pen(Color.Red, 1), new Point(tezhengdian2i, 0, tezhengdian2i, 1 - 5), new Point(tezhengdian2i, 0, tezhengdian2i, 1 + 5); /画出竖直方向直线 myGraphics.DrawLine(new Pen(Color.Red, 1), new Point(tezhengdian2i, 0 - 5, tezhengdian2i, 1), new Point(tezhengdian2i, 0 + 5, tezhengdian2i, 1); /画出水平方向直线 myGraphics.Dispose(); /释放资源 pictureBox1.Image = bmp; /显示含有“+”的图