#ifndef _INSIDE_VISUAL_CPP_GRAYTRANS
#define _INSIDE_VISUAL_CPP_GRAYTRANS
#include "ImageCenterDib.h"

//灰度變換類
class GrayTrans:public ImgCenterDib
{
public:
	//輸出圖像每像素位數(shù)
	int m_nBitCountOut;

	//輸出圖像位圖數(shù)據(jù)指針
	unsigned char * m_pImgDataOut;

	//輸出圖像顏色表
	LPRGBQUAD m_lpColorTableOut;

private:
	//輸出圖像的寬，像素為單位
	int m_imgWidthOut;

	//輸出圖像的高，像素為單位
	int m_imgHeightOut;

	//輸出圖像顏色表長(zhǎng)度
	int m_nColorTableLengthOut;

public:
	//不帶參數(shù)的構(gòu)造函數(shù)
	GrayTrans();

	//帶參數(shù)的構(gòu)造函數(shù)
	GrayTrans(CSize size, int nBitCount, LPRGBQUAD lpColorTable, 
		unsigned char *pImgData);

	//析構(gòu)函數(shù)
	~GrayTrans();
	
	//以像素為單位返回輸出圖像的寬和高
	CSize GetDimensions();

	//負(fù)相
	void ReverseImg();

	//彩色變灰度格式
	void ColorToGray();

	//灰度變彩色格式
	void GrayToColor();

	//二值化
	void Binary(int threshold=128);

	//線性拉伸
	void LinearStrech(CPoint point[2]);

	//對(duì)數(shù)非線性拉伸
	void DuiShuStrech(float a, float b, float c);

	//指數(shù)非線性拉伸
	void ZhiShuStrech(float a, float b, float c);

private:
	//單通道數(shù)據(jù)線性拉伸
	void LinearStrechForSnglChannel(unsigned char *pImgDataIn,
		unsigned char *pImgDataOut,int imgWidth,int imgHeight,CPoint point[2]);

	//單通道數(shù)據(jù)對(duì)數(shù)函數(shù)非線性拉伸
	void DuiShuStrechForSnglChannel(unsigned char *pImgDataIn,
		unsigned char *pImgDataOut,int imgWidth,int imgHeight,
		float a, float b, float c);

	//單通道數(shù)據(jù)指數(shù)函數(shù)非線性拉伸
	void ZhiShuStrechForSnglChannel(unsigned char *pImgDataIn,
		unsigned char *pImgDataOut,int imgWidth,int imgHeight,
		float a, float b, float c);
		
};
#endif // _INSIDE_VISUAL_CPP_GRAYTRANS