WindowLevelExtCommand Constructor(int,int,RasterColor16[],RasterByteOrder)

Summary

Initializes a new WindowLevelExtCommand class object with explicit parameters.

Syntax

Objective-C

C++/CLI

Java

Python

public WindowLevelExtCommand( 
   int lowBit, 
   int highBit, 
   RasterColor16[] lookupTable, 
   RasterByteOrder order 
)

- (instancetype)initWithLookupTable:(NSArray<LTRasterColor16 *> *)lookupTable lowBit:(NSInteger)lowBit highBit:(NSInteger)highBit order:(LTRasterByteOrder)order NS_DESIGNATED_INITIALIZER;

public WindowLevelExtCommand( 
   int lowBit, 
   int highBit, 
   RasterColor16[] lookupTable, 
   RasterByteOrder order 
);

public: 
WindowLevelExtCommand(  
   int lowBit, 
   int highBit, 
   array<RasterColor16>^ lookupTable, 
   RasterByteOrder order 
)

__init__(self,lowBit,highBit,lookupTable,order) # Overloaded constructor

Parameters

lowBit
Value indicating the low bit used for leveling. 0 <= lowBit <= highBit <= (11 for 12-bit grayscale or 15 for 16-bit grayscale).

highBit
Value indicating the high bit used for leveling. 0 <= lowBit <= highBit <= (11 for 12-bit grayscale or 15 for 16-bit grayscale).

lookupTable
Optional 16-bit lookup table that can be used to implement a user defined conversion. For every intensity value between 0 and 2 raised to the power of (HighBit - LowBit + 1) - 1 there should be a corresponding entry in the lookup table that contains a 16-bit RGB quad. If lookupTable is null, the conversion is a normal shift (right or left) and the output image is 8-bit grayscale. If lookupTable is not null, the output image is a 24-bit image.

order
Value indicating the color order if the output image will be 48-bit. If LookupTable is null, this parameter is ignored.

Example

Run the WindowLevelExtCommand on an image.

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Core; 
 
public void WindowLevelExtConstructorExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE3.dcm")); 
 
   // Prepare the command 
   MinMaxBitsCommand MinMaxBits = new MinMaxBitsCommand(); 
   MinMaxBits.Run(image); 
 
   MinMaxValuesCommand MinMaxValues = new MinMaxValuesCommand(); 
   MinMaxValues.Run(image); 
 
   int Size = (1 << (MinMaxBits.MaximumBit - MinMaxBits.MinimumBit + 1)); 
   RasterColor16[] LookupTable = new RasterColor16[Size]; 
 
   // fill the first half of the LookupTable with RED. 
   for (int x = 0; x < Size / 2; x++) 
      LookupTable[x] = new RasterColor16(RasterColor16.MaximumComponent, 0, 0); 
 
   // fill the rest with gray values. 
   for (int x = Size / 2; x < Size; x++) 
   { 
      int y = (UInt16)((x - MinMaxValues.MinimumValue) * RasterColor16.MaximumComponent / (MinMaxValues.MaximumValue - MinMaxValues.MinimumValue)); 
      LookupTable[x] = new RasterColor16(y, y, y); 
   } 
 
   WindowLevelExtCommand command = new WindowLevelExtCommand(MinMaxBits.MinimumBit, MinMaxBits.MaximumBit, LookupTable, RasterByteOrder.Bgr); 
 
   command.Run(image); 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

 
import java.io.File; 
import java.io.IOException; 
 
import org.junit.*; 
import org.junit.Test; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
 
import leadtools.*; 
import leadtools.codecs.*; 
import leadtools.imageprocessing.core.*; 
 
 
public void windowLevelExtConstructorExample() { 
    final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
 
    // Load an image 
    RasterCodecs codecs = new RasterCodecs(); 
    codecs.setThrowExceptionsOnInvalidImages(true); 
    RasterImage image = codecs.load(combine(LEAD_VARS_IMAGES_DIR, "beauty16.jpg")); 
 
    // Prepare the command 
    MinMaxBitsCommand minMaxBits = new MinMaxBitsCommand(); 
    minMaxBits.run(image); 
 
    MinMaxValuesCommand minMaxValues = new MinMaxValuesCommand(); 
    minMaxValues.run(image); 
 
    int size = (1 << (minMaxBits.getMaximumBit() - minMaxBits.getMinimumBit() + 1)); 
    RasterColor16[] lookupTable = new RasterColor16[size]; 
 
    // Fill the first half of the LookupTable with Red 
    for (int x = 0; x < size / 2; x++) { 
        lookupTable[x] = new RasterColor16(RasterColor16.MAXIMUM_COMPONENT, 0, 0); 
    } 
 
    // fill the rest with gray values 
    for (int x = size / 2; x < size; x++) { 
        int y = (int) (x - minMaxValues.getMinimumValue()) * RasterColor16.MAXIMUM_COMPONENT 
                / (minMaxValues.getMaximumValue() - minMaxValues.getMinimumValue()); 
        lookupTable[x] = new RasterColor16(y, y, y); 
    } 
 
    WindowLevelExtCommand command = new WindowLevelExtCommand(minMaxBits.getMinimumBit(), 
            minMaxBits.getMaximumBit(), 
            lookupTable, RasterByteOrder.BGR); 
 
    int change = command.run(image); 
    assertTrue(change != RasterImageChangedFlags.NONE); 
 
    codecs.save(image, combine(LEAD_VARS_IMAGES_DIR, "Result.jpg"), RasterImageFormat.JPEG, 24); 
    System.out.println("Command run and image saved to: " + combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")); 
}

Requirements

Target Platforms

Reference

WindowLevelExtCommand Class

WindowLevelExtCommand Members

Overload List

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Leadtools.ImageProcessing.Core Assembly

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