Collapse All Expand All

LBitmap::Despeckle

#include "ltwrappr.h"

virtual L_INT LBitmap::Despeckle(uFlags = 0)

L_UINT32 uFlags;

/* flags */

Removes speckles from the class object's bitmap. Typically, this function is used to clean up scanned images (such as FAX images).

Parameter	Description
uFlags	Reserved for future use. Must be 0.

Returns

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

Comments

This function removes 1-pixel speckles, and shrinks some larger speckles. Therefore, in some cases, larger speckles can be completely removed by running it more than once.

To update a status bar or detect a user interrupt during execution of this function, refer to LBase::EnableStatusCallback.

This function supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.

This function does not support 32-bit grayscale images. It returns the error code ERROR_GRAY32_UNSUPPORTED if a 32-bit grayscale image is passed to this function.

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.

See Also

Functions:	LBitmap::Fragment, LBitmap::UnsharpMask, LBitmap::BricksTexture, LBitmap::Deskew, LBitmap::DeskewExt,  LBitmap::DiffuseGlow, LBitmap::GlowFilter, LBitmap::HalfTonePattern, LBitmap::HighPassFilter, LBitmap::MaskConvolution, LBitmap::Perspective, LBitmap::PlasmaFilter, LBitmap::Pointillist, LBitmap::Deskew, LBitmap::WindowLevel, LBitmap::WindowLevelExt, LBitmap::BlankPageDetector, LBitmap::AutoBinarize, LBitmap::DynamicBinary, LBitmap::AutoBinary, Class Members
Topics:	Raster Image Functions: Doing Geometric Transformations
	Raster Image Functions: Filtering Images
	Removing Noise
	Raster Image Functions: Removing Noise

Example

#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName
L_INT LBitmap__DespeckleExample()
{
   L_INT nRet;
   LBitmap LeadBitmap;
   nRet =LeadBitmap.Load(MAKE_IMAGE_PATH(TEXT("image1.cmp")), 0,ORDER_BGR);
   if(nRet !=SUCCESS)
      return nRet;
   nRet =LeadBitmap.Despeckle ();
   if(nRet !=SUCCESS)
      return nRet;
   return SUCCESS;
}