【2017年整理】数学形态学的腐蚀和膨胀运算.docVIP

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 cursorWaitCursorBegin(); ????// Old DIB bufferif (hDib == NULL){??WaitCursorEnd();????????return FALSE;} // only support 256 color imageWORD wBitCount = DIBBitCount(hDib);if (wBitCount != 8){??WaitCursorEnd();????????return FALSE;} // new DIBHDIB 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; ylHeight; y++)??{?? lpPtr=(char *)lpbmi+(dwBufferSize-nLineBytes-y*nLineBytes)+1;?? lpTempPtr=(char *)lpSrcDIB+(dwBufferSize-nLineBytes-y*nLineBytes)+1;?? for (x=1; xlWidth-1; x++)?? {????num0 = num = 0 ;????for(i=0;i3;i++)????{???? num=(unsigned char)*(lpPtr+i-1);???? if(num num0)??????num0 = num;????}????*lpTempPtr=(unsigned char)num0;????/*????num=(unsigned char)*lpPtr;????if (num==0)????{???? *lpTempPtr=(unsigned char)