public class WindowLevelExtCommand : RasterCommand
@interface LTWindowLevelExtCommand : LTRasterCommand
public class WindowLevelExtCommand
extends RasterCommand
public ref class WindowLevelExtCommand : public RasterCommand
Only TIFF and DICOM file formats are capable of saving images that have been window-leveled. Images can be window-leveled by calling WindowLevelExtCommand and specifying RasterWindowLevelMode.PaintAndProcessing for the flags parameter, by using the WindowLevelExtCommand or by loading an image from a file format that supports Window Leveling. If a window-leveled image is saved as any other file format, the image data will be converted before being saved. For more information, refer to Saving Window-Leveled Images. See WindowLevelCommand for a version of this class using 8-bit lookup tables. LEADTOOLS supports two types of LUTs for 10-16-bit grayscale images (8-bit LUT and 16-bit LUT). Typical grayscale image display and processing is done using an 8-bit LUT. But, you can also use a 16-bit LUT, which offers more precision. Some special video cards and monitors also support display of grayscale images using a 16-bit LUT. For more information, refer to Introduction to Image Processing With LEADTOOLS. For more information, refer to Grayscale Images.
Run the WindowLevelExtCommand on an image.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Core;
public void WindowLevelExtCommandExample()
{
// Load an image
RasterCodecs codecs = new RasterCodecs();
codecs.ThrowExceptionsOnInvalidImages = true;
RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE3.dcm"));
// Prepare the command
int x;
int y;
int Size;
RasterColor16[] LookupTable;
MinMaxBitsCommand MinMaxBits = new MinMaxBitsCommand();
MinMaxValuesCommand MinMaxValues = new MinMaxValuesCommand();
WindowLevelExtCommand command = new WindowLevelExtCommand();
MinMaxBits.Run(image);
MinMaxValues.Run(image);
Size = (1 << (MinMaxBits.MaximumBit - MinMaxBits.MinimumBit + 1));
LookupTable = new Leadtools.RasterColor16[Size];
// fill the first half of the LookupTable with RED.
for (x = 0; x < Size / 2; x++)
LookupTable[x] = new Leadtools.RasterColor16(Leadtools.RasterColor16.MaximumComponent, 0, 0);
// fill the rest with gray values.
for (x = Size / 2; x < Size; x++)
{
y = (int)((x - MinMaxValues.MinimumValue) * Leadtools.RasterColor16.MaximumComponent / (MinMaxValues.MaximumValue - MinMaxValues.MinimumValue));
LookupTable[x] = new Leadtools.RasterColor16(y, y, y);
}
command.HighBit = MinMaxBits.MaximumBit;
command.LowBit = MinMaxBits.MinimumBit;
command.LookupTable = LookupTable;
command.Order = Leadtools.RasterByteOrder.Bgr;
command.Run(image);
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}
Leadtools.ImageProcessing.Core Namespace
Introduction to Image Processing With LEADTOOLS
ApplyVoiLookupTableCommand Class
Leadtools.ImageProcessing.Color.GrayScaleToDuotoneCommand
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