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vb.net中边缘检测 边缘检测函数( 五 )

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pixel = (unsigned char)*lpSrc;
if(pixel == 0)
{
bFindPoint = true;
CurrentPoint.Height = CurrentPoint.Height + Direction[BeginDirect][1];
CurrentPoint.Width = CurrentPoint.Width + Direction[BeginDirect][0];
if(CurrentPoint.Height == StartPoint.HeightCurrentPoint.Width == StartPoint.Width)
{
bFindStartPoint = true;
}
lpDst = (char *)lpNewDIBBits + lLineBytes * CurrentPoint.Height + CurrentPoint.Width;
*lpDst = (unsigned char)0;
//扫描的方向逆时针旋转两格
BeginDirect--;
if(BeginDirect == -1)
BeginDirect = 7;
BeginDirect--;
if(BeginDirect == -1)
BeginDirect = 7;
}
else
{
//扫描方向顺时针旋转一格
BeginDirect++;
if(BeginDirect == 8)
BeginDirect = 0;
}
}
}
// 复制腐蚀后的图像
memcpy(lpDIBBits, lpNewDIBBits, lWidth * lHeight);
// 释放内存
LocalUnlock(hNewDIBBits);
LocalFree(hNewDIBBits);
// 返回
return TRUE;
}
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