- left
- X coordinate of a point. The color of the specified point will be used to set the region.
- top
- Y coordinate of a point. The color of the specified point will be used to set the region.
- borderColor
- Border color.
- lowerToleranceColor
- Lower tolerance values that set the lower stopping point for the region.
- upperToleranceColor
- Upper tolerance values that set the lower stopping point for the region.
- combineMode
- The action to take regarding the existing image region, if one is defined.
Visual Basic (Declaration) | |
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Public Sub AddBorderToRegion( _ ByVal left As Integer, _ ByVal top As Integer, _ ByVal borderColor As RasterColor, _ ByVal lowerToleranceColor As RasterColor, _ ByVal upperToleranceColor As RasterColor, _ ByVal combineMode As RasterRegionCombineMode _ ) |
Visual Basic (Usage) | Copy Code |
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Dim instance As RasterImage Dim left As Integer Dim top As Integer Dim borderColor As RasterColor Dim lowerToleranceColor As RasterColor Dim upperToleranceColor As RasterColor Dim combineMode As RasterRegionCombineMode instance.AddBorderToRegion(left, top, borderColor, lowerToleranceColor, upperToleranceColor, combineMode) |
C# | |
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public void AddBorderToRegion( int left, int top, RasterColor borderColor, RasterColor lowerToleranceColor, RasterColor upperToleranceColor, RasterRegionCombineMode combineMode ) |
C++/CLI | |
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public: void AddBorderToRegion( int left, int top, RasterColor borderColor, RasterColor lowerToleranceColor, RasterColor upperToleranceColor, RasterRegionCombineMode combineMode ) |
Parameters
- left
- X coordinate of a point. The color of the specified point will be used to set the region.
- top
- Y coordinate of a point. The color of the specified point will be used to set the region.
- borderColor
- Border color.
- lowerToleranceColor
- Lower tolerance values that set the lower stopping point for the region.
- upperToleranceColor
- Upper tolerance values that set the lower stopping point for the region.
- combineMode
- The action to take regarding the existing image region, if one is defined.
Visual Basic | Copy Code |
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Public Sub AddBorderToRegionExample() Dim codecs As RasterCodecs = New RasterCodecs() Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp") Dim destFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1_AddBorderToRegion.bmp") ' Load the image Dim image As RasterImage = codecs.Load(srcFileName) ' Posterize the image to decrease the number of colors Dim posterize As PosterizeCommand = New PosterizeCommand(16) posterize.Run(image) ' Specify a pixel in the upper left of the displayed image Dim pt As LeadPoint = New LeadPoint(image.ImageWidth \ 8, image.ImageHeight \ 8) ' Adjust the point in case the view perspective is not TopLeft pt = image.PointToImage(RasterViewPerspective.TopLeft, pt) ' Create a border region at this point Dim borderColor As RasterColor = image.GetPixelColor(pt.Y, pt.X) Dim lowerColor As RasterColor = New RasterColor(20, 30, 150) Dim upperColor As RasterColor = New RasterColor(15, 30, 10) image.AddBorderToRegion(pt.X, pt.Y, borderColor, lowerColor, upperColor, RasterRegionCombineMode.Set) ' Fill the region with blue Dim fill As FillCommand = New FillCommand(RasterColor.FromKnownColor(RasterKnownColor.Blue)) fill.Run(image) ' Save the image codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24) image.Dispose() codecs.Dispose() End Sub Public NotInheritable Class LEAD_VARS Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" End Class |
C# | Copy Code |
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public void AddBorderToRegionExample() { RasterCodecs codecs = new RasterCodecs(); string srcFileName = Path.Combine(LEAD_VARS.ImagesDir,"Image1.cmp"); string destFileName = Path.Combine(LEAD_VARS.ImagesDir,"Image1_AddBorderToRegion.bmp"); // Load the image RasterImage image = codecs.Load(srcFileName); // Posterize the image to decrease the number of colors PosterizeCommand posterize = new PosterizeCommand(16); posterize.Run(image); // Specify a pixel in the upper left of the displayed image LeadPoint pt = new LeadPoint(image.ImageWidth / 8, image.ImageHeight / 8); // Adjust the point in case the view perspective is not TopLeft pt = image.PointToImage(RasterViewPerspective.TopLeft, pt); // Create a border region at this point RasterColor borderColor = image.GetPixelColor(pt.Y, pt.X); RasterColor lowerColor = new RasterColor(20, 30, 150); RasterColor upperColor = new RasterColor(15, 30, 10); image.AddBorderToRegion(pt.X, pt.Y, borderColor, lowerColor, upperColor, RasterRegionCombineMode.Set); // Fill the region with blue FillCommand fill = new FillCommand(RasterColor.FromKnownColor(RasterKnownColor.Blue)); fill.Run(image); // Save the image codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24); image.Dispose(); codecs.Dispose(); } static class LEAD_VARS { public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; } |
SilverlightCSharp | Copy Code |
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SilverlightVB | Copy Code |
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For color bitmaps:
If the value of the pixel at (x, y) is (125, 125, 125) and lowerToleranceColor is (20,30,15), then the lower stopping point is (105, 95, 110). If upperToleranceColor is (20,30,15), then the upper stopping point is (145,155,140). In this case, the pixels with values between (105,95,110) and (145,155,140) are non-border pixels and will be included in the region. Any pixel with a value outside this range or equal to borderColor is considered a border pixel.
For gray scale bitmaps:
The minimum channel tolerance value of lowerToleranceColor will be used to set the lower stopping point, and the minimum channel tolerance value of upperToleranceColor will be used to set the upper stopping point. For example, if the value of the pixel at (x, y) is (125, 125, 125) and lowerToleranceColor is (20,30,15), the smallest value of the triplet (15) will be used to create the lower stopping point of (110,110,110). If upperToleranceColor is (10,25,20), the smallest value of that triplet (10) will be used to create the upper stopping point of (135,135,135). In this case, the pixels with values between (110, 110, 110) and (135,135,135) are non-border pixels and will be included in the region. Any pixel with a value outside this range or equal to borderColor is considered a border pixel.
This method does not support signed data images.
To update an existing region, you specify how the new region is to be combined with the existing one using the combineMode parameter. For more information, refer to RasterRegionCombineMode.
For more information, refer to Creating a Region.
For more information, refer to Saving A Region.
For more information, refer to Working with the Existing Region.
Target Platforms: Silverlight, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only), Windows Phone 7