LEADTOOLS Image Processing (Leadtools.ImageProcessing.Color assembly)

RemapHueCommand Constructor()

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Example 







Initializes a new RemapHueCommand class object with default parameters.
Syntax
public RemapHueCommand()
'Declaration
 
Public Function New()
'Usage
 
Dim instance As New RemapHueCommand()
public RemapHueCommand()
- (id)init;

public RemapHueCommand()

function RemapHueCommand()
public:
RemapHueCommand();
Example
Copy Code   
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Color

Public Function INCREMENT_S2(ByVal x As Integer, ByVal Length As Integer) As Integer
   Return ((x + 1) Mod Length)
End Function
Public Function DECREMENT_S2(ByVal x As Integer, ByVal Length As Integer) As Integer
   Return ((x + (Length - 1)) Mod Length)
End Function

Public Function ADD_S2(ByVal x As Integer, ByVal y As Integer, ByVal Length As Integer) As Integer
   Return ((x + y) Mod Length)
End Function

Public Sub RemapHueCommandConstructorExample()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"))

   ' Prepare the command
   Dim Length As Integer
   If (leadImage.BitsPerPixel >= 48) Then
      Length = 65536
   ElseIf (Not (leadImage.BitsPerPixel = 16 Or leadImage.BitsPerPixel = 12)) Then
      Length = 256
   ElseIf (IsNothing(leadImage.GetLookupTable) And leadImage.UseLookupTable) Then
      Length = 256
   Else
      Length = (1 << leadImage.BitsPerPixel)
   End If

   Dim MaskTable() As Integer
   Dim HueTable() As Integer
   'Allocate tables
   ReDim MaskTable(Length - 1)
   ReDim HueTable(Length - 1)

   Dim i As Integer
   'Initialize tables
   For i = 0 To Length - 1
      MaskTable(i) = 0
      HueTable(i) = i
   Next

   'Get the hue for green
   Dim hsvRef As RasterHsvColor = RasterHsvColor.FromRasterColor(New RasterColor(0, 255, 0))

   Dim HueGreen As Integer
   HueGreen = hsvRef.H

   'Obtain new hue  
   hsvRef = RasterHsvColor.FromRasterColor(New RasterColor(255, 128, 0))
   Dim Change As Integer = hsvRef.H - HueGreen
   Dim HueChange As Integer
   If (Change > 0) Then
      HueChange = Change
   Else
      HueChange = Change + Length - 1
   End If

   HueGreen = (HueGreen * (Length - 1)) \ 255
   HueChange = (HueChange * (Length - 1)) \ 255

   'Set values in HueTable, MaskTable 
   HueTable(HueGreen) = HueTable(HueGreen) + HueChange
   MaskTable(HueGreen) = 1

   'set the hues near green (+/- 15)
   i = INCREMENT_S2(HueGreen, Length)

   Dim Count As Integer
   For Count = (15 * (Length - 1)) \ 255 To 1 Step -1
      i = INCREMENT_S2(i, Length)
      HueTable(i) = ADD_S2(HueTable(i), HueChange, Length)
      MaskTable(i) = 1
   Next

   i = DECREMENT_S2(HueGreen, Length)

   For Count = (15 * (Length - 1)) \ 255 To 1 Step -1

      i = DECREMENT_S2(i, Length)
      HueTable(i) = ADD_S2(HueTable(i), HueChange, Length)
      MaskTable(i) = 1
   Next
   Dim command As RemapHueCommand = New RemapHueCommand
   command.Mask = MaskTable
   command.HueTable = HueTable
   command.SaturationTable = Nothing
   command.ValueTable = Nothing
   command.LookUpTableLength = Length

   command.Run(leadImage)
   codecs.Save(leadImage, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24)

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.ImageProcessing.Color;

public int INCREMENT_S2(int x, int Length)
{
   return ((x+1)% Length);
}
public int DECREMENT_S2(int x, int Length)
{
   return (( x + (Length - 1)) % Length);
}

public int ADD_S2(int x,int y, int Length)
{
   return ((x+y)% Length);
}

public void RemapHueCommandConstructorExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;

   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"));

   // Prepare the command
   int    Length;
   if(image.BitsPerPixel >= 48)
      Length = 0x10000;
   else if(!(image.BitsPerPixel == 16 || image.BitsPerPixel == 12))
      Length = 256;
   else if(image.GetLookupTable() != null && image.UseLookupTable)
      Length = 256;
   else
      Length = (1 << image.BitsPerPixel);

   //Allocate tables
   int[] MaskTable = new int[Length];
   int[] HueTable  = new int[Length];

   //Initialize tables
   for (int i = 0; i < Length; i++)
   {
      MaskTable[i] = 0;
      HueTable[i] = i;
   }

   //Get the hue for green
   RasterHsvColor hsvRef = RasterHsvColor.FromRasterColor(new RasterColor(0,255,0));

   int HueGreen = hsvRef.H;

   //Obtain new hue  
   hsvRef =  RasterHsvColor.FromRasterColor(new RasterColor(255, 128, 0));
   int Change = (int)hsvRef.H - (int)HueGreen;
   int HueChange = (Change>0) ? (int)Change : (int)(Change + Length - 1);
   HueGreen   *= (Length - 1)/255;
   HueChange *= (Length - 1)/255;

   //Set values in HueTable, MaskTable 
   HueTable[HueGreen] = (HueTable[HueGreen] + HueChange);
   MaskTable[HueGreen] = 1;

   //set the hues near green (+/- 15)
   int Count = (15 * (Length - 1))/255;
   for (int i = INCREMENT_S2(HueGreen, Length); Count > 0; i = INCREMENT_S2(i, Length), Count--)
   {
      HueTable[i] = ADD_S2(HueTable[i], HueChange, Length);
      MaskTable[i] = 1;
   }

   Count = (15 * (Length - 1)) / 255;
   for (int i = DECREMENT_S2(HueGreen, Length); Count > 0; i = DECREMENT_S2(i, Length), Count--)
   {
      HueTable[i] = ADD_S2(HueTable[i], HueChange, Length);
      MaskTable[i] = 1;
   }

   RemapHueCommand command = new RemapHueCommand();
   command.Mask = MaskTable;
   command.HueTable = HueTable;
   command.SaturationTable = null;
   command.ValueTable = null;
   command.LookUpTableLength = Length;
   command.Run(image);
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24);

}

static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Color;

public int INCREMENT_S2(int x, int Length)
{
   return ((x+1)% Length);
}
public int DECREMENT_S2(int x, int Length)
{
   return (( x + (Length - 1)) % Length);
}

public int ADD_S2(int x,int y, int Length)
{
   return ((x+y)% Length);
}
      
public async Task RemapHueCommandConstructorExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;

   // Load the image
   string srcFileName = @"Assets\Image1.cmp";
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   // Prepare the command
   int    Length;
   if(image.BitsPerPixel >= 48)
      Length = 0x10000;
   else if(!(image.BitsPerPixel == 16 || image.BitsPerPixel == 12))
      Length = 256;
   else if(image.GetLookupTable() != null && image.UseLookupTable)
      Length = 256;
   else
      Length = (1 << image.BitsPerPixel);

   //Allocate tables
   int[] MaskTable = new int[Length];
   int[] HueTable  = new int[Length];

   //Initialize tables
   for (int i = 0; i < Length; i++)
   {
      MaskTable[i] = 0;
      HueTable[i] = i;
   }

   //Get the hue for green
   RasterHsvColor hsvRef = RasterHsvColorHelper.FromRasterColor(RasterColorHelper.Create(0,255,0));

   int HueGreen = hsvRef.H;

   //Obtain new hue  
   hsvRef =  RasterHsvColorHelper.FromRasterColor(RasterColorHelper.Create(255, 128, 0));
   int Change = (int)hsvRef.H - (int)HueGreen;
   int HueChange = (Change>0) ? (int)Change : (int)(Change + Length - 1);
   HueGreen   *= (Length - 1)/255;
   HueChange *= (Length - 1)/255;

   //Set values in HueTable, MaskTable 
   HueTable[HueGreen] = (HueTable[HueGreen] + HueChange);
   MaskTable[HueGreen] = 1;

   //set the hues near green (+/- 15)
   int Count = (15 * (Length - 1))/255;
   for (int i = INCREMENT_S2(HueGreen, Length); Count > 0; i = INCREMENT_S2(i, Length), Count--)
   {
      HueTable[i] = ADD_S2(HueTable[i], HueChange, Length);
      MaskTable[i] = 1;
   }

   Count = (15 * (Length - 1)) / 255;
   for (int i = DECREMENT_S2(HueGreen, Length); Count > 0; i = DECREMENT_S2(i, Length), Count--)
   {
      HueTable[i] = ADD_S2(HueTable[i], HueChange, Length);
      MaskTable[i] = 1;
   }

   RemapHueCommand command = new RemapHueCommand();
   command.Mask = MaskTable;
   command.HueTable = HueTable;
   command.SaturationTable = null;
   command.ValueTable = null;
   command.LookUpTableLength = Length;
   command.Run(image);

   string destFileName = @"result.jpg";
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName);
   await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.Jpeg, 0);
}
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Color;
using Leadtools.Examples;

public int INCREMENT_S2(int x, int Length)
{
   return ((x+1)% Length);
}
public int DECREMENT_S2(int x, int Length)
{
   return (( x + (Length - 1)) % Length);
}

public int ADD_S2(int x,int y, int Length)
{
   return ((x+y)% Length);
}
public void RemapHueCommandConstructorExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   int    Length;
   if(image.BitsPerPixel >= 48)
      Length = 0x10000;
   else if(!(image.BitsPerPixel == 16 || image.BitsPerPixel == 12))
      Length = 256;
   else if(image.GetLookupTable() != null && image.UseLookupTable)
      Length = 256;
   else
      Length = (1 << image.BitsPerPixel);

   //Allocate tables
   int[] MaskTable = new int[Length];
   int[] HueTable  = new int[Length];

   //Initialize tables
   for (int i = 0; i < Length; i++)
   {
      MaskTable[i] = 0;
      HueTable[i] = i;
   }

   //Get the hue for green
   RasterHsvColor hsvRef = RasterHsvColor.FromRasterColor(new RasterColor(0,255,0));

   int HueGreen = hsvRef.H;

   //Obtain new hue  
   hsvRef =  RasterHsvColor.FromRasterColor(new RasterColor(255, 128, 0));
   int Change = (int)hsvRef.H - (int)HueGreen;
   int HueChange = (Change>0) ? (int)Change : (int)(Change + Length - 1);
   HueGreen   *= (Length - 1)/255;
   HueChange *= (Length - 1)/255;

   //Set values in HueTable, MaskTable 
   HueTable[HueGreen] = (HueTable[HueGreen] + HueChange);
   MaskTable[HueGreen] = 1;

   //set the hues near green (+/- 15)
   int Count = (15 * (Length - 1))/255;
   for (int i = INCREMENT_S2(HueGreen, Length); Count > 0; i = INCREMENT_S2(i, Length), Count--)
   {
      HueTable[i] = ADD_S2(HueTable[i], HueChange, Length);
      MaskTable[i] = 1;
   }

   Count = (15 * (Length - 1)) / 255;
   for (int i = DECREMENT_S2(HueGreen, Length); Count > 0; i = DECREMENT_S2(i, Length), Count--)
   {
      HueTable[i] = ADD_S2(HueTable[i], HueChange, Length);
      MaskTable[i] = 1;
   }

   RemapHueCommand command = new RemapHueCommand();
   command.Mask = MaskTable;
   command.HueTable = HueTable;
   command.SaturationTable = null;
   command.ValueTable = null;
   command.LookUpTableLength = Length;
   command.Run(image);

   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Color

Public Function INCREMENT_S2(ByVal x As Integer, ByVal Length As Integer) As Integer
   Return ((x+1) Mod Length)
End Function
Public Function DECREMENT_S2(ByVal x As Integer, ByVal Length As Integer) As Integer
   Return ((x + (Length - 1)) Mod Length)
End Function

Public Function ADD_S2(ByVal x As Integer, ByVal y As Integer, ByVal Length As Integer) As Integer
   Return ((x+y) Mod Length)
End Function
Public Sub RemapHueCommandConstructorExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim Length As Integer
   If image.BitsPerPixel >= 48 Then
      Length = &H10000
   Else If Not(image.BitsPerPixel = 16 OrElse image.BitsPerPixel = 12) Then
      Length = 256
   Else If Not image.GetLookupTable() Is Nothing AndAlso image.UseLookupTable Then
      Length = 256
   Else
      Length = (1 << image.BitsPerPixel)
   End If

   'Allocate tables
   Dim MaskTable As Integer() = New Integer(Length - 1){}
   Dim HueTable As Integer() = New Integer(Length - 1){}

   'Initialize tables
   Dim i As Integer = 0
   Do While i < Length
      MaskTable(i) = 0
      HueTable(i) = i
      i += 1
   Loop

   'Get the hue for green
   Dim hsvRef As RasterHsvColor = RasterHsvColor.FromRasterColor(New RasterColor(0,255,0))

   Dim HueGreen As Integer = hsvRef.H

   'Obtain new hue  
   hsvRef = RasterHsvColor.FromRasterColor(New RasterColor(255, 128, 0))
   Dim Change As Integer = CInt(hsvRef.H) - CInt(HueGreen)
   Dim HueChange As Integer
   If (Change>0) Then
      HueChange = CInt(Change)
   Else
      HueChange = CInt(Change + Length - 1)
   End If
   HueGreen *= (Length - 1)/255
   HueChange *= (Length - 1)/255

   'Set values in HueTable, MaskTable 
   HueTable(HueGreen) = (HueTable(HueGreen) + HueChange)
   MaskTable(HueGreen) = 1

   'set the hues near green (+/- 15)
   Dim Count As Integer = (15 * (Length - 1))/255
   i = INCREMENT_S2(HueGreen, Length)
   Do While Count > 0
      HueTable(i) = ADD_S2(HueTable(i), HueChange, Length)
      MaskTable(i) = 1
      i = INCREMENT_S2(i, Length)
      Count -= 1
   Loop

   Count = (15 * (Length - 1)) / 255
   i = DECREMENT_S2(HueGreen, Length)
   Do While Count > 0
      HueTable(i) = ADD_S2(HueTable(i), HueChange, Length)
      MaskTable(i) = 1
      i = DECREMENT_S2(i, Length)
      Count -= 1
   Loop

   Dim command As RemapHueCommand = New RemapHueCommand()
   command.Mask = MaskTable
   command.HueTable = HueTable
   command.SaturationTable = Nothing
   command.ValueTable = Nothing
   command.LookUpTableLength = Length
   command.Run(image)

   ' Save result image
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24)
   image.Dispose()
End Sub
Requirements

Target Platforms

See Also

Reference

RemapHueCommand Class
RemapHueCommand Members
Overload List

 

 

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