virtual L_INT LBitmap::LevelsetBitmapRgn(LambdaIn, LambdaOut)
Performs semi-automatic segmentation (using the Levelset algorithm) by shrinking or expanding a contour represented by a region to the objects in the image.
Represents the weight of moving the contour inside. The default value is 1.
Represents the weight of moving the contour outside. The default value is 1.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
If the image has no region this function assumes a rectangular region that covers the image.
The Levelset algorithm finds the best-fitting contour that encapsulates the object.
Equal values for lambdaIn and lambdaOut allow the algorithm to decide whether to shrink or expand the selected region.
This function supports 12- and 16-bit grayscale and 48- and 64-bit color images.
This function supports signed/unsigned images.
Win32, x64.
#if defined (LEADTOOLS_V19_OR_LATER)
L_INT LBitmap__LevelsetBitmapRgnExample(L_VOID)
{
L_INT nRet ;
LBitmap LeadBitmap ;
nRet = LeadBitmap.Load(MAKE_IMAGE_PATH(TEXT("IMAGE3.dcm")), 0,ORDER_BGR);
if(nRet !=SUCCESS)
return nRet ;
RECT MainRect ;
MainRect.left = 200 ;
MainRect.right = 300 ;
MainRect.top = 200 ;
MainRect.bottom = 250 ;
LBitmapRgn Region(&LeadBitmap);
nRet = Region.SetRgnRect(&MainRect);
if(nRet != SUCCESS)
return nRet ;
// found level set region
nRet = LeadBitmap.LevelsetBitmapRgn(1, 1) ;
if( nRet !=SUCCESS )
return nRet ;
return SUCCESS;
}
#endif // LEADTOOLS_V19_OR_LATER
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