RemapIntensityCommandFlags Enumeration

Summary

Flags that indicate the color plane to update, whether to change the high bit and whether the LookupTable contains normal or stretched data.

Syntax

Objective-C

C++/CLI

Java

Python

[FlagsAttribute()] 
public enum RemapIntensityCommandFlags

typedef NS_OPTIONS(NSUInteger, LTRemapIntensityCommandFlags)

public final class RemapIntensityCommandFlags 
    extends java.lang.Enum<RemapIntensityCommandFlags>

[FlagsAttribute()] 
public enum class RemapIntensityCommandFlags

class RemapIntensityCommandFlags(Enum): 
   Master = 0 
   Red = 1 
   Green = 2 
   Blue = 3 
   ChangeHighBit = 16 
   Normal = 256

Members

Value	Member	Description
0x00000000	Master	All channels.
0x00000001	Red	Red channel only.
0x00000002	Green	Green channel only.
0x00000003	Blue	Blue channel only.
0x00000010	ChangeHighBit	Change the high bit of the image according to the used data of the LookupTable.
0x00000100	Normal	The data in the LookupTable is normal data, in this case the LookupTable length should be equal to 2^(HighBit - LowBit + 1).

Remarks

This enumeration has the FlagsAttribute attribute that allows a bitwise combination of its member values.

Calculating Master Channel Values

In order to speed up widely used image processing filters in LEADTOOLS, the grayscale value (master channel) of a colored image is calculated using the following formulas:

#define CalcGrayValue(r, g, b) ((L_UCHAR)(((L_UCHAR) (((2 * (L_UINT) (r)) + (5 * (L_UINT) (g)) + (L_UINT) (b) + 4) / 8)))) 
#define CalcGrayValue16(r, g, b) ((L_UINT16) (((2 * (L_UINT32) (r)) + (5 * (L_UINT32) (g)) + (L_UINT32) (b) + 4) / 8)) 
#define CalcGrayValue32(r, g, b) ((L_UINT32) (((2 * (L_UINT32) (r)) + (5 * (L_UINT32) (g)) + (L_UINT32) (b) + 4) / 8))

Use a bitwise OR ( ¦ ) to specify one flag from each group.

Group	Flags
Flags that indicate the color plane to update.	Master, Red, Green, Blue
Flag that indicates whether or not to change the high bit.	ChangeHighBit
Flag that indicates whether LookupTable contains normal or stretched data.	Normal

Requirements

Target Platforms

Reference

Leadtools.ImageProcessing.Color Namespace

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