Increases or decreases the sharpness of the image in the class object's bitmap.


#include "ltwrappr.h"

virtual L_INT LBitmap::Sharpen(nSharpness, uFlags = 0)


L_INT nSharpness

The amount to change the sharpness. Valid values range from -1000 to +1000.

L_UINT32 uFlags

Reserved for future use. Must be 0.


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


Negative values decrease the sharpness of the image. Specify -1000 for minimum sharpness. Positive values increase the sharpness. Specify +1000 for maximum sharpness.

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.

Sharpen Function - Before

Sharpen Function - Before

Sharpen Function - After

Sharpen Function - After

View additional platform support for this Sharpen function.

Required DLLs and Libraries


Win32, x64.

See Also




L_INT LBitmap__SharpenExample() 
   L_INT nRet; 
   LBitmap LeadBitmap; 
   nRet =LeadBitmap.Load(MAKE_IMAGE_PATH(TEXT("image1.cmp")), 0,ORDER_BGR); 
   if(nRet !=SUCCESS) 
      return nRet; 
   return LeadBitmap.Sharpen(500); 
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