Sets the palette of this RasterImage object that will be used by 1-8 bit color or grayscale image.
public void SetPalette(
RasterColor[] palette,
int startIndex,
int count
)
Public Sub SetPalette( _
ByVal palette() As Leadtools.RasterColor, _
ByVal startIndex As Integer, _
ByVal count As Integer _
)
public void SetPalette(
Leadtools.RasterColor[] palette,
int startIndex,
int count
)
- (BOOL)setPalette:(nullable NSArray<LTRasterColor *> *)palette range:(NSRange)range error:(NSError **)error
public void setPalette(RasterColor[] palette, int startIndex, int count)
function Leadtools.RasterImage.SetPalette(
palette ,
startIndex ,
count
)
public:
void SetPalette(
Leadtools.array<RasterColor>^ palette,
int startIndex,
int count
)
palette
An array of RasterColor containing the new palette to use.
startIndex
Index of the first palette entry to replace.
count
Number of palette entries to replace.
The image data of a RasterImage object with BitsPerPixel values of 1, 2, 3, 4, 5, 6, 7 or 8 consists of an index into the image palette. You can get a copy of the palette used by using the GetPalette method.
You can change the palette used by the RasterImage object with the SetPalette method.
This method does not support signed images.
For more information, refer to RasterPalette and Introduction: Palette Handling.
For information on 10 to 16-bit grayscale image, refer to the Grayscale Images.
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 PaletteExample()
{
RasterCodecs codecs = new RasterCodecs();
string srcFileName = Path.Combine(ImagesPath.Path, "Image1.cmp");
string destFileName = Path.Combine(ImagesPath.Path, "Image1_RedPalette.bmp");
// Load the image as 8 bits/pixel
RasterImage image = codecs.Load(srcFileName, 8, CodecsLoadByteOrder.Rgb, 1, 1);
// Get the palette of this image and change it to shades of red
RasterColor[] palette = image.GetPalette();
for (int i = 0; i < palette.Length; i++)
palette[i] = new RasterColor(i, 0, 0);
// Set the palette back in the image then save the file
image.SetPalette(palette, 0, palette.Length);
codecs.Save(image, destFileName, RasterImageFormat.Bmp, image.BitsPerPixel);
image.Dispose();
codecs.Dispose();
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Core
Imports Leadtools.ImageProcessing.Color
Imports Leadtools.Controls
Imports Leadtools.Dicom
Imports Leadtools.Drawing
Imports Leadtools.Svg
Public Sub PaletteExample()
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_RedPalette.bmp")
' Load the image as 8 bits/pixel
Dim image As RasterImage = codecs.Load(srcFileName, 8, CodecsLoadByteOrder.Rgb, 1, 1)
' Get the palette of this image and change it to shades of red
Dim palette As RasterColor() = image.GetPalette()
Dim i As Integer = 0
Do While i < palette.Length
palette(i) = New RasterColor(i, 0, 0)
i += 1
Loop
' Set the palette back in the image then save the file
image.SetPalette(palette, 0, palette.Length)
codecs.Save(image, destFileName, RasterImageFormat.Bmp, image.BitsPerPixel)
image.Dispose()
codecs.Dispose()
End Sub
Public NotInheritable Class LEAD_VARS
Public 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 PaletteExample(RasterImage image, Stream destStream)
{
// image should be loaded as 8 bits/pixel
// Get the palette of this image and change it to shades of red
RasterColor[] palette = image.GetPalette();
for (int i = 0; i < palette.Length; i++)
palette[i] = new RasterColor(i, 0, 0);
// Set the palette back in the image then save the file
image.SetPalette(palette, 0, palette.Length);
RasterCodecs codecs = new RasterCodecs();
codecs.Save(image, destStream, RasterImageFormat.Bmp, 0);
image.Dispose();
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.Dicom
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Core
Imports Leadtools.ImageProcessing.Color
Imports Leadtools.Windows.Media
Public Sub PaletteExample(ByVal image As RasterImage, ByVal destStream As Stream)
' image should be loaded as 8 bits/pixel
' Get the palette of this image and change it to shades of red
Dim palette As RasterColor() = image.GetPalette()
Dim i As Integer = 0
Do While i < palette.Length
palette(i) = New RasterColor(i, 0, 0)
i += 1
Loop
' Set the palette back in the image then save the file
image.SetPalette(palette, 0, palette.Length)
Dim codecs As RasterCodecs = New RasterCodecs()
codecs.Save(image, destStream, RasterImageFormat.Bmp, 0)
image.Dispose()
End Sub
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