public void StartDithering(
RasterColor[] palette,
int colors
)
- (BOOL)startDithering:(nullable NSArray<LTRasterColor *> *)palette
colors:(NSUInteger)colors
error:(NSError **)error
public:
void StartDithering(
array<RasterColor>^ palette,
int colors
)
palette
The palette this uses for dithering. You can specify your own palette, or use a null reference for LEAD's fixed palette.
colors
Number of colors used in the palette. If the palette contains more colors, only the first colors colors are used. Valid values are 2 to 256.
The following flow chart shows how the methods relate to each other:
The following properties from the RasterImage are used to control the dithering operation:
This method does not support signed images.
For more information, refer to Introduction to Image Processing With LEADTOOLS.
This example dithers each line in one image and writes it to another image.
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 Leadtools.Svg;
public void StartDitheringExample()
{
RasterCodecs codecs = new RasterCodecs();
// Load an image that has BottomLeft ViewPerspective
RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE1.CMP"));
RasterColor[] Palette = RasterPalette.Fixed(256);
// Create the new palletized image.
RasterImage destinationImage = new RasterImage(RasterMemoryFlags.Conventional, image.Width, image.Height, 8, image.Order, image.ViewPerspective, Palette, IntPtr.Zero, 0);
// Set the dithering method.
image.DitheringMethod = RasterDitheringMethod.StevensonArce;
// Initialize the dithering process.
image.StartDithering(Palette, 256);
// Allocate the output buffer for 8-bit data.
byte[] InBuffer = new byte[image.Width * 3];// Buffer to hold the input row.
byte[] OutBuffer = new byte[image.Width];// Buffer to hold the output row.
// Use DitherLine method to process each row in the image.
image.Access();
destinationImage.Access();
for (int i = 0; i < image.Height; i++)
{
image.GetRow(i, InBuffer, 0, image.BytesPerLine);
image.DitherLine(InBuffer, 0, OutBuffer, 0);
destinationImage.SetRow(i, OutBuffer, 0, destinationImage.BytesPerLine);
}
destinationImage.Release();
image.Release();
// End the dithering process.
image.StopDithering();
codecs.Save(destinationImage, Path.Combine(LEAD_VARS.ImagesDir, "IMAGE1_DitherLine.BMP"), RasterImageFormat.Bmp, 0);
image.Dispose();
destinationImage.Dispose();
codecs.Dispose();
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}
Introduction to Image Processing With LEADTOOLS
Codecs.CodecsThumbnailOptions.DitheringMethod property
ImageProcessing.ColorResolutionCommand.DitheringMethod property
RasterDitheringMethod enumeration
RasterDefaults.DitheringMethod property
RasterImage.DitheringMethod property
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document
Your email has been sent to support! Someone should be in touch! If your matter is urgent please come back into chat.
Chat Hours:
Monday - Friday, 8:30am to 6pm ET
Thank you for your feedback!
Please fill out the form again to start a new chat.
All agents are currently offline.
Chat Hours:
Monday - Friday
8:30AM - 6PM EST
To contact us please fill out this form and we will contact you via email.