Leadtools Namespace > RasterImage Class : CreateMaskFromRegion Method |
public RasterImage CreateMaskFromRegion()
'Declaration Public Function CreateMaskFromRegion() As RasterImage
'Usage Dim instance As RasterImage Dim value As RasterImage value = instance.CreateMaskFromRegion()
public RasterImage CreateMaskFromRegion()
function Leadtools.RasterImage.CreateMaskFromRegion()
public: RasterImage^ CreateMaskFromRegion();
For more information, refer to Implementing Transparency.
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 CreateMaskFromRegionExample() 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_CreateMaskFromRegion.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) ' Get the color of the specified pixel Dim regionColor As RasterColor = image.GetPixelColor(pt.Y, pt.X) ' Create a region that includes all pixels of that color image.AddColorToRegion(regionColor, RasterRegionCombineMode.Set) Dim maskImage As RasterImage = image.CreateMaskFromRegion() codecs.Save(maskImage, destFileName, RasterImageFormat.Bmp, 1) maskImage.Dispose() 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 CreateMaskFromRegionExample() { RasterCodecs codecs = new RasterCodecs(); string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_CreateMaskFromRegion.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); // Get the color of the specified pixel RasterColor regionColor = image.GetPixelColor(pt.Y, pt.X); // Create a region that includes all pixels of that color image.AddColorToRegion(regionColor, RasterRegionCombineMode.Set); RasterImage maskImage = image.CreateMaskFromRegion(); codecs.Save(maskImage, destFileName, RasterImageFormat.Bmp, 1); maskImage.Dispose(); image.Dispose(); codecs.Dispose(); } static class LEAD_VARS { public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; }
RasterImageExamples.prototype.CreateMaskFromRegionExample = function ( ) { Tools.SetLicense ( ) ; with (Leadtools) { with (Leadtools.Codecs) { var codecs = new RasterCodecs(); var srcFileName = "Assets\\Image1.cmp"; var destFileName = "Image1_CreateMaskFromRegion.bmp"; var image; var maskImage; // Load the image return Tools.AppInstallFolder().getFileAsync(srcFileName).then(function (loadFile) { return codecs.loadAsync(LeadStreamFactory.create(loadFile)) }) .then(function (img) { image = img; // Posterize the image to decrease the number of colors var posterize = new Leadtools.ImageProcessing.Color.PosterizeCommand(16); posterize.run(image); // Specify a pixel in the upper left of the displayed image var pt = LeadPointHelper.create(image.imageWidth / 8, image.imageHeight / 8); // Adjust the point in case the view perspective is not TopLeft pt = image.pointToImage(RasterViewPerspective.topLeft, pt); // Get the color of the specified pixel var regionColor = image.getPixelColor(pt.Y, pt.X); // Create a region that includes all pixels of that color image.addColorToRegion(regionColor, RasterRegionCombineMode.set); maskImage = image.createMaskFromRegion(); return Tools.AppLocalFolder().createFileAsync(destFileName) }) .then(function (saveFile) { var saveStream = LeadStreamFactory.create(saveFile); return codecs.saveAsync(image, saveStream, RasterImageFormat.bmp, 24) }) .then(function () { maskImage.close(); image.close(); codecs.close(); }); } } }
[TestMethod] public async Task CreateMaskFromRegionExample() { RasterCodecs codecs = new RasterCodecs(); string srcFileName = @"Assets\Image1.cmp"; string destFileName = @"Image1_CreateMaskFromRegion.bmp"; // Load the image StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName); RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile)); // 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 = LeadPointHelper.Create(image.ImageWidth / 8, image.ImageHeight / 8); // Adjust the point in case the view perspective is not TopLeft pt = image.PointToImage(RasterViewPerspective.TopLeft, pt); // Get the color of the specified pixel RasterColor regionColor = image.GetPixelColor(pt.Y, pt.X); // Create a region that includes all pixels of that color image.AddColorToRegion(regionColor, RasterRegionCombineMode.Set); RasterImage maskImage = image.CreateMaskFromRegion(); StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName); ILeadStream saveStream = LeadStreamFactory.Create(saveFile); await codecs.SaveAsync(image, saveStream, RasterImageFormat.Bmp, 24); maskImage.Dispose(); image.Dispose(); codecs.Dispose(); }
public void CreateMaskFromRegionExample(RasterImage image, Stream destStream) { // 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); // Get the color of the specified pixel RasterColor regionColor = image.GetPixelColor(pt.Y, pt.X); // Create a region that includes all pixels of that color image.AddColorToRegion(regionColor, RasterRegionCombineMode.Set); RasterImage maskImage = image.CreateMaskFromRegion(); RasterCodecs codecs = new RasterCodecs(); codecs.Save(maskImage, destStream, RasterImageFormat.Png, 0); maskImage.Dispose(); image.Dispose(); }
Public Sub CreateMaskFromRegionExample(ByVal image As RasterImage, ByVal destStream As Stream)
' 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)
' Get the color of the specified pixel
Dim regionColor As RasterColor = image.GetPixelColor(pt.Y, pt.X)
' Create a region that includes all pixels of that color
image.AddColorToRegion(regionColor, RasterRegionCombineMode.Set)
Dim maskImage As RasterImage = image.CreateMaskFromRegion()
Dim codecs As RasterCodecs = New RasterCodecs()
codecs.Save(maskImage, destStream, RasterImageFormat.Png, 0)
maskImage.Dispose()
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