←Select platform

Master Property

Summary

Gets the color leveling information for the Master channel when the Type property is set to either AutoColorLevelCommandType.Contrast or AutoColorLevelCommandType.Intensity.

Syntax

Java

Objective-C

WinRT C#

C++

public ColorLevelCommandData Master { get; }

Public ReadOnly Property Master As Leadtools.Imageprocessing.Color.ColorLevelCommandData

public Leadtools.Imageprocessing.Color.ColorLevelCommandData Master {get;}

@property (nonatomic, strong, readonly) LTColorLevelCommandData *master

public ColorLevelCommandData getMaster()

 get_Master();

public: 
property Leadtools.Imageprocessing.Color.ColorLevelCommandData^ Master { 
   Leadtools.Imageprocessing.Color.ColorLevelCommandData^ get(); 
}

Property Value

The color leveling information for the Master channel. If AutoColorLevelCommandFlags.NoProcess is not set in Flag property, you can set the value of this property as null. If AutoColorLevelCommandFlags.NoProcess is set in Flag property, then this property cannot be null.

Remarks

If Flag property is set to AutoColorLevelCommandType.Level, then the value of this property is unchanged. The AutoColorLevelCommand command updates the value of this property.

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))

Example

Refer to Flag.

Requirements

Target Platforms

Reference

AutoColorLevelCommand Class

AutoColorLevelCommand Members

Help Version 19.0.2017.10.27

Leadtools.ImageProcessing.Color Assembly

Introduction

Getting Started

Namespaces

Leadtools.ImageProcessing.Color Namespace

Assemblies