Leadtools Namespace > RasterImage Class : AddColorHsvRangeToRegion Method |
public void AddColorHsvRangeToRegion( RasterHsvColor lowerColor, RasterHsvColor upperColor, RasterRegionCombineMode combineMode )
'Declaration Public Sub AddColorHsvRangeToRegion( _ ByVal lowerColor As RasterHsvColor, _ ByVal upperColor As RasterHsvColor, _ ByVal combineMode As RasterRegionCombineMode _ )
'Usage Dim instance As RasterImage Dim lowerColor As RasterHsvColor Dim upperColor As RasterHsvColor Dim combineMode As RasterRegionCombineMode instance.AddColorHsvRangeToRegion(lowerColor, upperColor, combineMode)
public void AddColorHsvRangeToRegion( RasterHsvColor lowerColor, RasterHsvColor upperColor, RasterRegionCombineMode combineMode )
function Leadtools.RasterImage.AddColorHsvRangeToRegion( lowerColor , upperColor , combineMode )
public: void AddColorHsvRangeToRegion( RasterHsvColor lowerColor, RasterHsvColor upperColor, RasterRegionCombineMode combineMode )
This method uses the HSV color model to set a region based on a color range.
It is useful for identifying all shades of a certain color. For example, this method could be used to set a region of all green colors including:
RGB(0,1,0) | ||
RGB(0,2,0) | RGB(1,2,1) | |
RGB(0,1,0) | ||
RGB(0,3,0) | RGB(1,3,1) | RGB(2,3,2) |
RGB(0,255,0) | RGB(1,255,1) | RGB(2,255,2) |
The diagram below shows how S and V affect the color green (H = 85):
To be added to the region a color must fall in the range lowerColor...upperColor. If you want to set a region for all red (and colors near red), you could specify lowerColor and upperColor as follows:
lowerColor (250,1,1) upperColor (5,255,255)
The hue for the lowerColor is 250 and the hue for the upperColor is 5. For the hue to fall in this range it must be 250, 251, 252, 253, 254, 255, 1, 2, 3, 4, or 5. Note that the values for hue wrap from 255 to 1.
This method supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical Imaging editions.
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.
Public Sub AddColorHsvRangeToRegionExample() 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_AddColorHsvRangeToRegion.bmp") ' Load the image Dim image As RasterImage = codecs.Load(srcFileName) ' Add the region Dim lowerColor As RasterHsvColor = New RasterHsvColor(75, 40, 40) Dim upperColor As RasterHsvColor = New RasterHsvColor(95, 255, 255) image.AddColorHsvRangeToRegion(lowerColor, upperColor, RasterRegionCombineMode.Set) ' Draw something on the image Dim command As InvertCommand = New InvertCommand() command.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
public void AddColorHsvRangeToRegionExample() { RasterCodecs codecs = new RasterCodecs(); string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_AddColorHsvRangeToRegion.bmp"); // Load the image RasterImage image = codecs.Load(srcFileName); // Add the region RasterHsvColor lowerColor = new RasterHsvColor(75, 40, 40); RasterHsvColor upperColor = new RasterHsvColor(95, 255, 255); image.AddColorHsvRangeToRegion(lowerColor, upperColor, RasterRegionCombineMode.Set); // Draw something on the image InvertCommand command = new InvertCommand(); command.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"; }
RasterImageExamples.prototype.AddColorHsvRangeToRegionExample = function ( ) { Tools.SetLicense ( ) ; with (Leadtools) { with (Leadtools.Codecs) { var codecs = new RasterCodecs(); var srcFileName = "Assets\\Image1.cmp"; var destFileName = "Image1_AddColorHsvRangeToRegion.bmp"; var image; // Load the image return Tools.AppInstallFolder().getFileAsync(srcFileName).then(function (loadFile) { return codecs.loadAsync(LeadStreamFactory.create(loadFile)) }) .then(function (img) { image = img; // Add the region var lowerColor = RasterHsvColorHelper.create(75, 40, 40); var upperColor = RasterHsvColorHelper.create(95, 255, 255); image.addColorHsvRangeToRegion(lowerColor, upperColor, RasterRegionCombineMode.set); // Draw something on the image var command = new Leadtools.ImageProcessing.Color.InvertCommand(); command.run(image); // Save the image return Tools.AppLocalFolder().createFileAsync(destFileName) }) .then(function (saveFile) { var saveStream = LeadStreamFactory.create(saveFile); return codecs.saveAsync(image, saveStream, RasterImageFormat.bmp, 24) }) .then(function () { image.close(); codecs.close(); }); } } }
[TestMethod] public async Task AddColorHsvRangeToRegionExample() { RasterCodecs codecs = new RasterCodecs(); string srcFileName = @"Assets\Image1.cmp"; string destFileName = @"Image1_AddColorHsvRangeToRegion.bmp"; // Load the image StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName); RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile)); // Add the region RasterHsvColor lowerColor = RasterHsvColorHelper.Create(75, 40, 40); RasterHsvColor upperColor = RasterHsvColorHelper.Create(95, 255, 255); image.AddColorHsvRangeToRegion(lowerColor, upperColor, RasterRegionCombineMode.Set); // Draw something on the image InvertCommand command = new InvertCommand(); command.Run(image); // Save the image StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName); ILeadStream saveStream = LeadStreamFactory.Create(saveFile); await codecs.SaveAsync(image, saveStream, RasterImageFormat.Bmp, 24); image.Dispose(); codecs.Dispose(); }
public void AddColorHsvRangeToRegionExample(RasterImage image, Stream destStream) { // Add the region RasterHsvColor lowerColor = new RasterHsvColor(75, 40, 40); RasterHsvColor upperColor = new RasterHsvColor(95, 255, 255); image.AddColorHsvRangeToRegion(lowerColor, upperColor, RasterRegionCombineMode.Set); // Draw something on the image InvertCommand command = new InvertCommand(); command.Run(image); // Save the image RasterCodecs codecs = new RasterCodecs(); codecs.Save(image, destStream, RasterImageFormat.Png, 24); image.Dispose(); }
Public Sub AddColorHsvRangeToRegionExample(ByVal image As RasterImage, ByVal destStream As Stream)
' Add the region
Dim lowerColor As RasterHsvColor = New RasterHsvColor(75, 40, 40)
Dim upperColor As RasterHsvColor = New RasterHsvColor(95, 255, 255)
image.AddColorHsvRangeToRegion(lowerColor, upperColor, RasterRegionCombineMode.Set)
' Draw something on the image
Dim command As InvertCommand = New InvertCommand()
command.Run(image)
' Save the image
Dim codecs As RasterCodecs = New RasterCodecs()
codecs.Save(image, destStream, RasterImageFormat.Png, 24)
image.Dispose()
End Sub
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2