创建LeadTools“对比图像”应用程序的具体步骤
的有关信息介绍如下:LeadTools 是 NET,Win API,WinRT,Linux,iOS,OS X,Android & HTML5平台下领先世界的图像处理开发工具包,其在创建对比图像方面拥有强大的功能。
打开Visual Studio .NET。点击 文件->新建->项目…。打开新建项目对话框后,在模板中选择“Visual C#”或“Visual Basic”,随后选择“Windows窗体应用程序”。在名称栏中输入项目名称“CompareImages”,并使用“浏览”按钮选择您工程的存储路径,点击“确定”。
在“解决方案资源管理器”中,右击“引用”,选择“添加引用”。根据当前工程的 Framework 版本和生成目标平台,选择添加相应的LeadTools控件,例如工程中的版本为 Framework 4.0、生成目标平台是 x86,则浏览选择Leadtools For .NET文件夹”
Leadtools.dll
Leadtools.Codecs.dll
Leadtools.Codecs.Tif.dll
Leadtools.WinForms.dll
Leadtools.ImageProcessing.Core.dll
点击“确定”按钮,将以上所有的DLL添加到应用程序中。
从工具箱(视图->工具箱),添加一个Button控件(将button1的Text属性修改为“在目标图像中搜索第一幅图像的字符L”,两个Panel控件(Name分别修改为panelBefore和panelAfter)。如下图:
切换至Form1的代码视图(右击Form1,选择查看代码),将下面几行代码添加到文件开始处:
1: using Leadtools;
2: using Leadtools.Codecs;
3: using Leadtools.WinForms;
4: using Leadtools.ImageProcessing.Core;
5: using Leadtools.Codecs.Tif;
将以下变量添加至Form1类:
1: private RasterImageViewer beforePic;
2: private RasterImageViewer afterPic;
3: private RasterCodecs codecs;
添加Form1 Load事件句柄,在其中添加以下代码:
1: beforePic = new RasterImageViewer();
2: beforePic.BackColor = Color.DarkCyan;
3: beforePic.Dock = DockStyle.Fill;
4: beforePic.HorizontalAlignMode = RasterPaintAlignMode.Center;
5: beforePic.VerticalAlignMode = RasterPaintAlignMode.Center;
6: beforePic.AutoResetScaleFactor = false;
7: beforePic.InteractiveMode = RasterViewerInteractiveMode.Region;
8: beforePic.InteractiveRegionType = RasterViewerInteractiveRegionType.Rectangle;
9: panelBefore.Controls.Add(beforePic);
10: beforePic.BringToFront();
11:
12: afterPic = new RasterImageViewer();
13: afterPic.BackColor = beforePic.BackColor;
14: afterPic.Dock = beforePic.Dock;
15: afterPic.HorizontalAlignMode = beforePic.HorizontalAlignMode;
16: afterPic.VerticalAlignMode = beforePic.VerticalAlignMode;
17: afterPic.AutoResetScaleFactor = beforePic.AutoResetScaleFactor;
18: panelAfter.Controls.Add(afterPic);
19: afterPic.BringToFront();
20:
21: codecs = new RasterCodecs();
22: codecs.ThrowExceptionsOnInvalidImages = true;
23: //加载图像
24: beforePic.Image = codecs.Load(Path.Combine(Application.StartupPath, @"..\..\Pic\L.tif"));
25: afterPic.Image = codecs.Load(Path.Combine(Application.StartupPath, @"..\..\Pic\All.tif"));
双击button1,在button1 Click事件句柄中添加以下代码:
1: LeadRect rc_cor = new LeadRect(5, 5, 35, 35);
2:
3: CorrelationCommand cmd = new CorrelationCommand();
4: cmd.CorrelationImage = beforePic.Image;
5: cmd.CorrelationImage.AddRectangleToRegion(null, rc_cor, RasterRegionCombineMode.Set);
6: cmd.Points = new LeadPoint;
7: cmd.Threshold = 90;
8: cmd.XStep = 2;
9: cmd.YStep = 1;
10: cmd.Run(afterPic.Image);
11:
12: for (int i_cor = 0; i_cor < cmd.NumberOfPoints; i_cor++)
13: {
14: rc_cor = new LeadRect(cmd.Points[i_cor].X, cmd.Points[i_cor].Y, 35, 35);
15: if (i_cor == 0)
16: afterPic.Image.AddRectangleToRegion(null, rc_cor, RasterRegionCombineMode.Set);
17: else
18: afterPic.Image.AddRectangleToRegion(null, rc_cor, RasterRegionCombineMode.Or);
19: }
编译运行程序,结果如下图,从下图我们看到CorrelationCommand在目标图像中轻松找到了所有字符L!