数学形态学的腐蚀和膨胀运算

数学形态学的腐蚀和膨胀运算数学形态学的腐蚀和膨胀运算 形态学 是描述动植物形态和结构的一门生物学分支 这里借用来指一种图像处理的方法 图像处理的形态 学方法是一种 数学形态学 方法 用来提取图像成分 并据此来对图像区域的形状进行表示和描述 它的数学 语言是集合理论 其中的集合代表图像中物体的形状 图像处理中常用的数学形态学方法包括腐蚀 膨胀 开 闭 边缘提取和图像细化 我依次给出 Visual C 源代码 ErosionDIB Parameters HDIB hDib objective DIB handle BOOL bHori erosion direction Return Value BOOL True is success else False Description This function do erosion with the specified direction BOOL ErosionDIB HDIB hDib BOOL bHori start wait cursor WaitCursorBegin Old DIB buffer if hDib NULL WaitCursorEnd return FALSE only support 256 color image WORD wBitCount DIBBitCount hDib if wBitCount 8 WaitCursorEnd return FALSE new DIB HDIB hNewDIB CopyHandle hDib if hNewDIB WaitCursorEnd return FALSE source dib buffer LPBITMAPINFO lpSrcDIB LPBITMAPINFO GlobalLock hDib if lpSrcDIB WaitCursorBegin return FALSE New DIB buffer LPBITMAPINFO lpbmi LPBITMAPINFO GlobalLock hNewDIB if lpbmi WaitCursorBegin return FALSE start erosion LPSTR lpPtr LPSTR lpTempPtr LONG x y BYTE num num0 int i LONG lHeight DIBHeight lpSrcDIB LONG lWidth DIBWidth lpSrcDIB DWORD dwBufferSize GlobalSize lpSrcDIB int nLineBytes BytesPerLine lpSrcDIB if bHori for y 0 y lHeight y lpPtr char lpbmi dwBufferSize nLineBytes y nLineBytes 1 lpTempPtr char lpSrcDIB dwBufferSize nLineBytes y nLineBytes 1 for x 1 x lWidth 1 x num0 num 0 for i 0 i num0 num0 num lpTempPtr unsigned char num0 num unsigned char lpPtr if num 0 lpTempPtr unsigned char 0 for i 0 i 3 i num unsigned char lpPtr i 1 if num 255 lpTempPtr unsigned char 255 break else lpTempPtr unsigned char 255 lpPtr lpTempPtr else Vertical for y 1 y lHeight 1 y lpPtr char lpbmi dwBufferSize nLineBytes y nLineBytes lpTempPtr char lpSrcDIB dwBufferSize nLineBytes y nLineBytes for x 0 x lWidth x num0 num 0 for i 0 i num0 num0 num lpTempPtr unsigned char num0 num unsigned char lpPtr if num 0 lpTempPtr unsigned char 0 for i 0 i 3 i num unsigned char lpPtr i 1 nLineBytes if num 255 lpTempPtr unsigned char 255 break else lpTempPtr unsigned char 255 lpPtr lpTempPtr cleanup GlobalUnlock hDib GlobalUnlock hNewDIB GlobalFree hNewDIB WaitCursorEnd return TRUE DilationDIB Parameters HDIB hDib objective DIB handle BOOL bHori dilation direction Return Value BOOL True is success else False Description This function do dilation with the specified direction BOOL DilationDIB HDIB hDib BOOL bHori start wait cursor WaitCursorBegin Old DIB buffer if hDib NULL WaitCursorEnd return FALSE only support 256 color image WORD wBitCount DIBBitCount hDib if wBitCount 8 WaitCursorEnd return FALSE new DIB HDIB hNewDIB CopyHandle hDib if hNewDIB WaitCursorEnd return FALSE source dib buffer LPBITMAPINFO lpSrcDIB LPBITMAPINFO GlobalLock hDib if lpSrcDIB WaitCursorBegin return FALSE New DIB buffer LPBITMAPINFO lpbmi LPBITMAPINFO GlobalLock hNewDIB if lpbmi WaitCursorBegin return FALSE start erosion LPSTR lpPtr LPSTR lpTempPtr LONG x y BYTE num num0 int i LONG lHeight DIBHeight lpSrcDIB LONG lWidth DIBWidth lpSrcDIB DWORD dwBufferSize GlobalSize lpSrcDIB int nLineBytes BytesPerLine lpSrcDIB if bHori for y 0 y lHeight y lpPtr char lpbmi dwBufferSize nLineBytes y nLineBytes 1 lpTempPtr char lpSrcDIB dwBufferSize nLineBytes y nLineBytes 1 for x 1 x lWidth 1 x num0 num 255 for i 0 i 3 i num unsigned char lpPtr i 1 if num num0 num0 num lpTempPtr unsigned char num0 num unsigned char lpPtr if num 255 lpTempPtr unsigned char 255 for i 0 i 3 i num unsigned char lpPtr i 1 if num 0 lpTempPtr unsigned char 0 break else lpTempPtr unsigned char 0 lpPtr lpTempPtr else for y 1 y lHeight 1 y lpPtr char lpbmi dwBufferSize nLineBytes y nLineBytes lpTempPtr char lpSrcDIB dwBufferSize nLineBytes y nLineBytes for x 0 x lWidth x num0 num 255 for i 0 i 3 i num unsigned char lpPtr i 1 if num num0 num0 num lpTempPtr unsigned char num0 num unsigned char lpPtr if num 255 lpTempPtr unsigned char 255 for i 0 i 3 i num unsigned char