实例介绍
【实例简介】
【实例截图】
【核心代码】
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Threading;
namespace 图像识别
{
public partial class Form1 : Form
{
private int num_old_x;
private int num_old_y;
private int num_new_x;
private int num_new_y;
private int x;
private int y;
private bool bool_MouseDown = false;
private bool bool_beginCutPic = false;
private bool bool_beginIdentify = false;
Bitmap OldBT;
Bitmap NewBT;
Bitmap Source;
//用于窗体拖动
private bool bool_begin_move = false;
private int num_mouseDown_X = 0;
private int num_mouseDown_Y = 0;
public Form1()
{
InitializeComponent();
}
//
//图像区域选择
//
private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
pictureBox1.Refresh();
if (pictureBox1.BackgroundImage != null && bool_beginCutPic==true)
{
bool_MouseDown = true;
num_old_x = MousePosition.X;
num_old_y = MousePosition.Y;
}
}
private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
if (bool_MouseDown == true)
{
num_new_x = MousePosition.X;
num_new_y = MousePosition.Y;
x = num_old_x - this.Location.X - pictureBox1.Location.X;
y = num_old_y - this.Location.Y - pictureBox1.Location.Y;
Graphics g = pictureBox1.CreateGraphics();
g.DrawRectangle(Pens.White, x, y, num_new_x - num_old_x, num_new_y - num_old_y);
pictureBox1.Refresh();
}
}
private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
{
if (bool_MouseDown == true)
{
bool_MouseDown = false;
Graphics g = pictureBox1.CreateGraphics();
g.DrawRectangle(Pens.White, x, y, num_new_x - num_old_x, num_new_y - num_old_y);
Bitmap bt = new Bitmap(num_new_x - num_old_x, num_new_y - num_old_y);
for (int i = x; i < x num_new_x - num_old_x; i )
{
for (int j = y; j < y num_new_y - num_old_y; j )
{
bt.SetPixel(i - x, j - y, OldBT.GetPixel(i, j));
}
}
pictureBox2.BackgroundImage = bt;
NewBT = bt;
Source = bt;
开始识别ToolStripMenuItem.Enabled = true;
lab_info.Text = "请开始进行开始提取操作.";
}
}
//
//最小化和退出程序
//
private void labelX1_Click(object sender, EventArgs e)
{
this.WindowState = FormWindowState.Minimized;
}
private void 退出ToolStripMenuItem_Click(object sender, EventArgs e)
{
Application.Exit();
}
//
//窗体拖动
//
private void labelX2_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
bool_begin_move = true;
num_mouseDown_X = e.X;
num_mouseDown_Y = e.Y;
}
}
private void labelX2_MouseMove(object sender, MouseEventArgs e)
{
if (bool_begin_move)
{
Point temp = new Point(0, 0);
temp.X = this.Location.X (e.X - num_mouseDown_X);
temp.Y = this.Location.Y (e.Y - num_mouseDown_Y);
this.Location = temp;
}
}
private void labelX2_MouseUp(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
bool_begin_move = false;
}
//
//打开新图片
//
private void 打开ToolStripMenuItem_Click(object sender, EventArgs e)
{
OpenFileDialog ofd = new OpenFileDialog();
ofd.Filter = "jpg,bmp files (*.jpg,*jpeg,*.bmp)|*.jpg;*.bmp;*.jpeg";
ofd.FilterIndex = 1;
if (ofd.ShowDialog() == DialogResult.OK)
{
OldBT = new Bitmap(ofd.FileName);
pictureBox1.BackgroundImage = OldBT;
开始截图ToolStripMenuItem.Enabled = true;
lab_info.Text = "请进行开始截图或者对图像进行黑白变换操作.";
if (黑贝变换ToolStripMenuItem.Enabled == false)
{
黑贝变换ToolStripMenuItem.Enabled = true;
}
this.DisplayScrollBars();
this.SetScrollBarValues();
}
}
//
//pictureBox3的图片显示格式
//
private void strechToolStripMenuItem_Click(object sender, EventArgs e)
{
pictureBox3.BackgroundImageLayout = ImageLayout.Stretch;
}
private void zoomToolStripMenuItem_Click(object sender, EventArgs e)
{
pictureBox3.BackgroundImageLayout = ImageLayout.Zoom;
}
private void centerToolStripMenuItem_Click(object sender, EventArgs e)
{
pictureBox3.BackgroundImageLayout = ImageLayout.Center;
}
private void noneToolStripMenuItem_Click(object sender, EventArgs e)
{
pictureBox3.BackgroundImageLayout = ImageLayout.None;
}
//
//开始截图和识别
//
private void 开始截图ToolStripMenuItem_Click(object sender, EventArgs e)
{
bool_beginCutPic = true;
lab_info.Text = "请在源图片中进行区域截图操作.";
打开ToolStripMenuItem.Enabled = false;
}
private void 开始识别ToolStripMenuItem_Click(object sender, EventArgs e)
{
bool_beginCutPic = false;
开始截图ToolStripMenuItem.Enabled = false;
开始识别ToolStripMenuItem.Enabled = false;
bool_beginIdentify = true;
this.Cursor = Cursors.Cross;
lab_info.Text = "请在截图窗口中点击文字颜色集中的位置.";
}
private void pictureBox2_Click(object sender, EventArgs e)
{
if (bool_beginIdentify == true)
{
int x = MousePosition.X - this.Location.X - pictureBox2.Location.X;
int y = MousePosition.Y - this.Location.Y - pictureBox2.Location.Y;
int num_color = Source.GetPixel(x, y).G;
for (int i = 0; i < NewBT.Width; i )
{
for (int j = 0; j < NewBT.Height; j )
{
if (Source.GetPixel(i, j).G - num_color > -(int)numUpDown_color.Value && Source.GetPixel(i, j).G - num_color < (int)numUpDown_color.Value)
{
NewBT.SetPixel(i, j, Color.Black);
}
// NewBT.SetPixel(i, j, Color.White);
//else
// NewBT.SetPixel(i, j, Color.Black);
else
NewBT.SetPixel(i, j, Color.White);
}
}
pictureBox3.BackgroundImage = NewBT;
pictureBox3.Refresh();
保存识别ToolStripMenuItem.Enabled = true;
lab_info.Text = "现在可对已识别图片进行保存.";
}
}
//
//黑白变换
//
private void 黑贝变换ToolStripMenuItem_Click(object sender, EventArgs e)
{
Control.CheckForIllegalCrossThreadCalls = false;
Thread t = new Thread(new ThreadStart(ChangeColor));
t.Start();
}
private void ChangeColor()
{
int num_green;
for (int i = 0; i < OldBT.Width; i )
{
for (int j = 0; j < OldBT.Height; j )
{
num_green = (OldBT.GetPixel(i, j).B OldBT.GetPixel(i, j).G OldBT.GetPixel(i, j).R) / 3;
OldBT.SetPixel(i, j, Color.FromArgb(num_green, num_green, num_green));
}
pictureBox1.BackgroundImage = OldBT;
pictureBox1.Refresh();
}
黑贝变换ToolStripMenuItem.Enabled = false;
}
//
//保存识别结果
//
private void 保存识别ToolStripMenuItem_Click(object sender, EventArgs e)
{
SaveFileDialog sfd = new SaveFileDialog();
sfd.Filter = "jpg file (*.jpg)|*.jpg";
if (sfd.ShowDialog() == DialogResult.OK)
{
pictureBox3.BackgroundImage.Save(sfd.FileName);
lab_info.Text = "图像文字提取系统";
this.Cursor = Cursors.Default;
pictureBox2.BackgroundImage = null;
pictureBox3.BackgroundImage = null;
pictureBox1.BackgroundImage = null;
打开ToolStripMenuItem.Enabled = true;
}
}
//
//放弃所有操作
//
private void 放弃ToolStripMenuItem_Click(object sender, EventArgs e)
{
lab_info.Text = "图像文字提取系统";
this.Cursor = Cursors.Default;
pictureBox2.BackgroundImage = null;
pictureBox3.BackgroundImage = null;
pictureBox1.BackgroundImage = null;
打开ToolStripMenuItem.Enabled = true;
}
//
//pictureBox实现滚动
//
private void Form1_Resize(Object sender, EventArgs e)
{
// If the PictureBox has an image, see if it needs
// scrollbars and refresh the image.
if (pictureBox1.Image != null)
{
this.DisplayScrollBars();
this.SetScrollBarValues();
this.Refresh();
}
}
public void DisplayScrollBars()
{
// If the image is wider than the PictureBox, show the HScrollBar.
if (pictureBox1.Width > pictureBox1.BackgroundImage.Width - this.vScrollBar1.Width)
{
hScrollBar1.Visible = false;
}
else
{
hScrollBar1.Visible = true;
}
// If the image is taller than the PictureBox, show the VScrollBar.
if (pictureBox1.Height >
pictureBox1.BackgroundImage.Height - this.hScrollBar1.Height)
{
vScrollBar1.Visible = false;
}
else
{
vScrollBar1.Visible = true;
}
}
private void HandleScroll(Object sender, ScrollEventArgs se)
{
/* Create a graphics object and draw a portion
of the image in the PictureBox. */
Graphics g = pictureBox1.CreateGraphics();
g.DrawImage(pictureBox1.BackgroundImage,
new Rectangle(0, 0, pictureBox1.Right - vScrollBar1.Width,
pictureBox1.Bottom - hScrollBar1.Height),
new Rectangle(hScrollBar1.Value, vScrollBar1.Value,
pictureBox1.Right - vScrollBar1.Width,
pictureBox1.Bottom - hScrollBar1.Height),
GraphicsUnit.Pixel);
pictureBox1.Update();
}
public void SetScrollBarValues()
{
// Set the Maximum, Minimum, LargeChange and SmallChange properties.
this.vScrollBar1.Minimum = 0;
this.hScrollBar1.Minimum = 0;
// If the offset does not make the Maximum less than zero, set its value.
if ((this.pictureBox1.BackgroundImage.Size.Width - pictureBox1.ClientSize.Width) > 0)
{
this.hScrollBar1.Maximum =
this.pictureBox1.BackgroundImage.Size.Width - pictureBox1.ClientSize.Width;
}
// If the VScrollBar is visible, adjust the Maximum of the
// HSCrollBar to account for the width of the VScrollBar.
if (this.vScrollBar1.Visible)
{
this.hScrollBar1.Maximum = this.vScrollBar1.Width;
}
this.hScrollBar1.LargeChange = this.hScrollBar1.Maximum / 10;
this.hScrollBar1.SmallChange = this.hScrollBar1.Maximum / 20;
// Adjust the Maximum value to make the raw Maximum value
// attainable by user interaction.
this.hScrollBar1.Maximum = this.hScrollBar1.LargeChange;
// If the offset does not make the Maximum less than zero, set its value.
if ((this.pictureBox1.BackgroundImage.Size.Height - pictureBox1.ClientSize.Height) > 0)
{
this.vScrollBar1.Maximum =
this.pictureBox1.BackgroundImage.Size.Height - pictureBox1.ClientSize.Height;
}
// If the HScrollBar is visible, adjust the Maximum of the
// VSCrollBar to account for the width of the HScrollBar.
if (this.hScrollBar1.Visible)
{
this.vScrollBar1.Maximum = this.hScrollBar1.Height;
}
this.vScrollBar1.LargeChange = this.vScrollBar1.Maximum / 10;
this.vScrollBar1.SmallChange = this.vScrollBar1.Maximum / 20;
// Adjust the Maximum value to make the raw Maximum value
// attainable by user interaction.
this.vScrollBar1.Maximum = this.vScrollBar1.LargeChange;
}
}
}
标签： c
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