imagetestview.cpp

原创：根据里面的PPT自己编写的角点定位算子Forstner,该方法对图象清晰的效果好

// imagetestView.cpp : implementation of the CImagetestView class
//

#include "stdafx.h"
#include "imagetest.h"

#include "imagetestDoc.h"
#include "imagetestView.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CImagetestView

IMPLEMENT_DYNCREATE(CImagetestView, CScrollView)

BEGIN_MESSAGE_MAP(CImagetestView, CScrollView)
	//{{AFX_MSG_MAP(CImagetestView)
	ON_COMMAND(ID_IMG_HARRIS_SHOWCORNER, OnImgHarrisShowcorner)
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CScrollView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CScrollView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CScrollView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CImagetestView construction/destruction

CImagetestView::CImagetestView()
{
	// TODO: add construction code here

}

CImagetestView::~CImagetestView()
{
}

BOOL CImagetestView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CScrollView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CImagetestView drawing

void CImagetestView::OnDraw(CDC* pDC)
{   int i,j;
    unsigned char *lpSrc;
	CImagetestDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	if(pDoc->m_hDIB == NULL)
		return ;
	// TODO: add draw code for native data here
	LPSTR lpDIB = (LPSTR) ::GlobalLock((HGLOBAL) pDoc->m_hDIB);
	int cxDIB = (int) ::DIBWidth(lpDIB);         // Size of DIB - x
	int cyDIB = (int) ::DIBHeight(lpDIB);        // Size of DIB - y
	LPSTR lpDIBBits=::FindDIBBits (lpDIB);
	// 计算图像每行的字节数
	long lLineBytes = WIDTHBYTES(cxDIB * 8);
	// 每行
	for(i = 0; i < cyDIB; i++)
	{
		// 每列
		for(j = 0; j < cxDIB; j++)
		{
			// 指向DIB第i行，第j个象素的指针
			lpSrc = (unsigned char*)lpDIBBits + lLineBytes * (cyDIB - 1 - i) + j;
			// 计算新的灰度值
			//*(lpSrc) = BYTE(255-*lpSrc);
		}
	}
	::GlobalUnlock((HGLOBAL) pDoc->m_hDIB);
	CRect rect(0,0,cxDIB,cyDIB), rcDIB(0,0,cxDIB,cyDIB);
	::PaintDIB(pDC->m_hDC, &rect, pDoc->m_hDIB, &rcDIB, pDoc->m_palDIB);
}

/////////////////////////////////////////////////////////////////////////////
// CImagetestView printing

BOOL CImagetestView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CImagetestView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CImagetestView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CImagetestView diagnostics

#ifdef _DEBUG
void CImagetestView::AssertValid() const
{
	CScrollView::AssertValid();
}

void CImagetestView::Dump(CDumpContext& dc) const
{
	CScrollView::Dump(dc);
}

CImagetestDoc* CImagetestView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CImagetestDoc)));
	return (CImagetestDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CImagetestView message handlers

void CImagetestView::OnInitialUpdate()
{
	CScrollView::OnInitialUpdate();

	CSize sizeTotal;
	// TODO: calculate the total size of this view
	//	sizeTotal.cx = sizeTotal.cy = 100;
	SetScrollSizes(MM_TEXT, GetDocument()->m_nDocSize);
}

void CImagetestView::OnSize(UINT nType, int cx, int cy)
{

	CScrollView::OnSize(nType, cx, cy);
	
	// TODO: Add your message handler code here
	
}


void CImagetestView::OnImgHarrisShowcorner() 
{
	CImagetestDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	if(pDoc->m_hDIB == NULL)
		return ;
	LPSTR lpDIB = (LPSTR) ::GlobalLock((HGLOBAL) pDoc->m_hDIB);
	int cxDIB = (int) ::DIBWidth(lpDIB);         
	int cyDIB = (int) ::DIBHeight(lpDIB);     
	int i,j;
	#define corner(ROW,COL) corner[cxDIB*(ROW)+(COL)]

	CDC *dc=GetDC();
	// 创建红色画笔对象
	CPen* pPenRed = new CPen;
	pPenRed->CreatePen(PS_SOLID,1,RGB(255,0,0));
	dc->SelectObject(pPenRed);
	for(i = 0; i < cyDIB; i++)
	{
		for(j = 0; j < cxDIB; j++)
		{
				if(pDoc->corner(i,j))
				{
					//在角点处划十字叉以标注
					dc->MoveTo (j-5,i);
					dc->LineTo (j+6,i);
					dc->MoveTo (j,i-5);
					dc->LineTo (j,i+6);
					dc->MoveTo (j-5,i+1);
					dc->LineTo (j+6,i+1);
					dc->MoveTo (j+1,i-5);
					dc->LineTo (j+1,i+6);
				}
		}
	}
	
}