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LBitmap::LevelsetBitmapRgn

#include "ltwrappr.h"

virtual L_INT LBitmap::LevelsetBitmapRgn(LambdaIn, LambdaOut)

L_INT LambdaIn;	the weight of moving the contour inside
L_INT LambdaOut;	the weight of moving the contour outside

Performs semi-automatic segmentation (using the Levelset algorithm) by shrinking or expanding a contour represented by a region to the objects in the image.

Parameter	Description
LambdaIn	Represents the weight of moving the contour inside. The default value is 1.
LambdaOut	Represents the weight of moving the contour outside. The default value is 1.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

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.

Required DLLs and Libraries

LTDIS
LTFIL
LTIMGCOR

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64.

Example

#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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