contrastprocess.h

visual c++数字图像与图形处理中的光盘内容

/////////////////////////////////////////////////////////////////////////////////
//
//	ContrastProcess.h: interface for the CContrastProcess class.
//
////////////////////////////////////////////////////////////////////////////////
// 版权所有(2002)
// Copyright(2002)
// 编写者: 向世明
// Author: Xiang Shiming


#ifndef _CCONTRASTPROCESS_H
#define _CCONTRASTPROCESS_H

#ifndef _CIMGPTPROCESS_H
#include "ImagePointProcess.h"
#endif

class CContrastProcess : public CImagePointProcess
{
DECLARE_DYNAMIC(CContrastProcess)  

public:
	CContrastProcess();
	virtual ~CContrastProcess();

private:
	void IncreaseContrast(BYTE* pbyBlue, BYTE* pbyGreen, BYTE* pbyRed, int nHigh, int nStretch);
	void DecreaseContrast(BYTE *pbyBlue,  BYTE* pbyGreen,  BYTE *pbyRed, int nStretch);

protected:
	int	 m_nIncrement;	//对比度的改变量(可正可负)	

public:
	BOOL ChangeContrast(LPBYTE lpbyBits32,  int x,  int y,  int nWidth,  int nHeight,  int nScanWidth, int nScanHeight);
	void SetContrastIncrement(int nIncrement);

#ifdef _DEBUG
	virtual void Dump(CDumpContext& dc) const;
	virtual void AssertValid() const;
#endif

};

#endif