The above code lets you define a region of intrest(ROI) on particular image. Then you can further extract this selected area for futher processing. Code in C#

Draw_Rectangle\Draw Rectangle\Draw Rectangle\bin\Debug\Draw Rectangle.exe
..............\..............\..............\...\.....\Draw Rectangle.pdb
..............\..............\..............\...\.....\Draw Rectangle.vshost.exe
..............\..............\..............\...\.....\Draw Rectangle.vshost.exe.manifest
..............\..............\..............\Draw Rectangle.csproj
..............\..............\..............\Form1.cs
..............\..............\..............\Form1.Designer.cs
..............\..............\..............\Form1.resx
..............\..............\..............\obj\Debug\Draw Rectangle.csproj.FileListAbsolute.txt
..............\..............\..............\...\.....\Draw Rectangle.csproj.GenerateResource.Cache
..............\..............\..............\...\.....\Draw Rectangle.exe
..............\..............\..............\...\.....\Draw Rectangle.pdb
..............\..............\..............\...\.....\Draw_Rectangle.Form1.resources
..............\..............\..............\...\.....\Draw_Rectangle.Properties.Resources.resources
..............\..............\..............\Program.cs
..............\..............\..............\...perties\AssemblyInfo.cs
..............\..............\..............\..........\Resources.Designer.cs
..............\..............\..............\..........\Resources.resx
..............\..............\..............\..........\Settings.Designer.cs
..............\..............\..............\..........\Settings.settings
..............\..............\Draw Rectangle.sln
..............\..............\Draw Rectangle.suo
..............\..............\..............\obj\Debug\TempPE
..............\..............\..............\bin\Debug
..............\..............\..............\obj\Debug
..............\..............\..............\bin
..............\..............\..............\obj
..............\..............\..............\Properties
..............\..............\Draw Rectangle
..............\Draw Rectangle
Draw_Rectangle

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