public WindowLevelCommand(
int lowBit,
int highBit,
RasterColor[] lookupTable,
RasterByteOrder order
)
Public Function New( _
ByVal lowBit As Integer, _
ByVal highBit As Integer, _
ByVal lookupTable() As RasterColor, _
ByVal order As RasterByteOrder _
)
- (instancetype)initWithLookupTable:(NSArray<LTRasterColor *> *)lookupTable
lowBit:(NSInteger)lowBit
highBit:(NSInteger)highBit
order:(LTRasterByteOrder)order
public WindowLevelCommand(
int lowBit,
int highBit,
RasterColor[] lookupTable,
RasterByteOrder order
)
public:
WindowLevelCommand(
int lowBit,
int highBit,
array<RasterColor>^ lookupTable,
RasterByteOrder order
)
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 8-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 an 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 24-bit. If LookupTable is null, this parameter is ignored.
Run the WindowLevelCommand on an image.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Core;
public void WindowLevelConstructorExample()
{
// Load an image
RasterCodecs codecs = new RasterCodecs();
codecs.ThrowExceptionsOnInvalidImages = true;
RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE3.dcm"));
// Prepare the command
//Change the image to 16-bit grayscale
GrayscaleCommand graycommand = new GrayscaleCommand(16);
graycommand.Run(image);
MinMaxBitsCommand MinMaxBits = new MinMaxBitsCommand();
MinMaxBits.Run(image);
MinMaxValuesCommand MinMaxValues = new MinMaxValuesCommand();
MinMaxValues.Run(image);
int Size = (1 << (MinMaxBits.MaximumBit - MinMaxBits.MinimumBit + 1));
RasterColor[] LookupTable = new RasterColor[Size];
// fill the first half of the LookupTable with RED.
for (int x = 0; x < Size / 2; x++)
LookupTable[x] = new RasterColor(255, 0, 0);
// fill the rest with gray values.
for (int x = Size / 2; x < Size; x++)
{
byte y = (byte)((x - MinMaxValues.MinimumValue) * 255 / (MinMaxValues.MaximumValue - MinMaxValues.MinimumValue));
LookupTable[x] = new RasterColor(y, y, y);
}
WindowLevelCommand command = new WindowLevelCommand(MinMaxBits.MinimumBit, MinMaxBits.MaximumBit, LookupTable, RasterByteOrder.Bgr);
command.Run(image);
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS21\Resources\Images";
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Core
Public Sub WindowLevelConstructorExample()
Dim codecs As New RasterCodecs()
codecs.ThrowExceptionsOnInvalidImages = True
Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE3.dcm"))
' Prepare the command
'Change the image to 16-bit grayscale
Dim graycommand As GrayscaleCommand = New GrayscaleCommand(16)
graycommand.Run(leadImage)
Dim MinMaxBits As MinMaxBitsCommand = New MinMaxBitsCommand
MinMaxBits.Run(leadImage)
Dim MinMaxValues As MinMaxValuesCommand = New MinMaxValuesCommand
MinMaxValues.Run(leadImage)
Dim Size As Integer = (1 << (MinMaxBits.MaximumBit - MinMaxBits.MinimumBit + 1))
Dim LookupTable() As RasterColor
ReDim LookupTable(Size - 1)
' fill the first half of the LookupTable with RED.
Dim x As Integer
For x = 0 To (Size \ 2 - 1)
LookupTable(x) = New RasterColor(255, 0, 0)
Next
' fill the rest with gray values.
For x = Size \ 2 To Size - 1
Dim y As Byte = CType((x) * 255 / (Size), Byte)
LookupTable(x) = New RasterColor(y, y, y)
Next
Dim command As WindowLevelCommand = New WindowLevelCommand(MinMaxBits.MinimumBit, MinMaxBits.MaximumBit, LookupTable, RasterByteOrder.Bgr)
command.Run(leadImage)
End Sub
Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\LEADTOOLS21\Resources\Images"
End Class
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