Determines whether the specified pixel is in the image region.
- (BOOL)regionContainsPoint:(LeadPoint)point function Leadtools.RasterImage.RegionContains(row ,col)
row
The row number of the pixel.
col
The column number of the pixel.
true if the specified pixel is in the region; false, otherwise.
This method uses image coordinates to specify the pixel. Therefore, you must account for the view perspective of the image.
For more information, refer to Working with the Existing Region.
using Leadtools;using Leadtools.Codecs;using Leadtools.ImageProcessing;using Leadtools.ImageProcessing.Core;using Leadtools.ImageProcessing.Color;using Leadtools.Dicom;using Leadtools.Drawing;using Leadtools.Controls;using LeadtoolsExamples.Common;using Leadtools.Svg;public void RegionContainsExample(){RasterCodecs codecs = new RasterCodecs();string srcFileName = Path.Combine(ImagesPath.Path, "Image1.cmp");string destFileName = Path.Combine(ImagesPath.Path, "Image1_RegionContains.bmp");// Load the imageRasterImage image = codecs.Load(srcFileName);// Add an ellipse inside a rectangle region to the imageLeadRect rc = new LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3);image.AddEllipseToRegion(null, rc, RasterRegionCombineMode.Set);// Loop through the image and turn all pixels in the region to double intensityfor (int y = 0; y < image.Height; y++){for (int x = 0; x < image.Width; x++){if (image.RegionContains(y, x)){RasterColor clr = image.GetPixelColor(y, x);clr = new RasterColor(clr.R * 2, clr.G * 2, clr.B * 2);image.SetPixelColor(y, x, clr);}}}codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24);image.Dispose();codecs.Dispose();}
Imports LeadtoolsImports Leadtools.CodecsImports Leadtools.ImageProcessingImports Leadtools.ImageProcessing.CoreImports Leadtools.ImageProcessing.ColorImports Leadtools.ControlsImports Leadtools.DicomImports Leadtools.DrawingImports Leadtools.SvgPublic Sub RegionContainsExample()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_RegionContains.bmp")' Load the imageDim image As RasterImage = codecs.Load(srcFileName)' Add an ellipse inside a rectangle region to the imageDim rc As LeadRect = New LeadRect(image.Width \ 3, image.Height \ 3, image.Width \ 3, image.Height \ 3)image.AddEllipseToRegion(Nothing, rc, RasterRegionCombineMode.Set)' Loop through the image and turn all pixels in the region to double intensityDim y As Integer = 0Do While y < image.HeightDim x As Integer = 0Do While x < image.WidthIf image.RegionContains(y, x) ThenDim clr As RasterColor = image.GetPixelColor(y, x)clr = New RasterColor(clr.R * 2, clr.G * 2, clr.B * 2)image.SetPixelColor(y, x, clr)End Ifx += 1Loopy += 1Loopcodecs.Save(image, destFileName, RasterImageFormat.Bmp, 24)image.Dispose()codecs.Dispose()End SubPublic NotInheritable Class LEAD_VARSPublic Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"End Class
using Leadtools;using Leadtools.Codecs;using Leadtools.Dicom;using Leadtools.ImageProcessing;using Leadtools.ImageProcessing.Core;using Leadtools.ImageProcessing.Color;using Leadtools.Examples;using Leadtools.Windows.Media;public void RegionContainsExample(Stream destStream){// create a new image to work withRasterImage image = new RasterImage(RasterMemoryFlags.Conventional, 500, 500, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, null, null, 0);// Add a rectangle region to the imageLeadRect rc = new LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3);image.AddRectangleToRegion(null, rc, RasterRegionCombineMode.Set);// Loop through the image and turn all pixels in the region to double intensityfor (int y = 0; y < image.Height; y++){for (int x = 0; x < image.Width; x++){if (image.RegionContains(y, x)){RasterColor clr = image.GetPixelColor(y, x);clr = new RasterColor(clr.R * 2, clr.G * 2, clr.B * 2);image.SetPixelColor(y, x, clr);}}}RasterCodecs codecs = new RasterCodecs();codecs.Save(image, destStream, RasterImageFormat.Bmp, 0);image.Dispose();}
Imports LeadtoolsImports Leadtools.CodecsImports Leadtools.DicomImports Leadtools.ImageProcessingImports Leadtools.ImageProcessing.CoreImports Leadtools.ImageProcessing.ColorImports Leadtools.Windows.MediaPublic Sub RegionContainsExample(ByVal destStream As Stream)' create a new image to work withDim image As RasterImage = New RasterImage(RasterMemoryFlags.Conventional, 500, 500, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, Nothing, Nothing, 0)' Add a rectangle region to the imageDim rc As LeadRect = New LeadRect(image.Width / 3, image.Height / 3, image.Width / 3, image.Height / 3)image.AddRectangleToRegion(Nothing, rc, RasterRegionCombineMode.Set)' Loop through the image and turn all pixels in the region to double intensityDim y As Integer = 0Do While y < image.HeightDim x As Integer = 0Do While x < image.WidthIf image.RegionContains(y, x) ThenDim clr As RasterColor = image.GetPixelColor(y, x)clr = New RasterColor(clr.R * 2, clr.G * 2, clr.B * 2)image.SetPixelColor(y, x, clr)End Ifx += 1Loopy += 1LoopDim codecs As RasterCodecs = New RasterCodecs()codecs.Save(image, destStream, RasterImageFormat.Bmp, 0)image.Dispose()End Sub
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