#include "l_bitmap.h"
L_LTIMGCOR_API L_INT L_MeanShiftFilterBitmap(pBitmap, nRadius, nColorDistance, uFlags)
Performs noise reduction while preserving detail.
Pointer to the bitmap handle that references the bitmap to be updated.
Size of the kernel where the middle pixel would be considered as the source pixel.
Color difference between the investigated pixel and the source pixel.
Reserved for future use. Must be 0.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
To keep details while removing noise, pass low positive values to ColorDistance parameter.
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 in the Document and Medical Imaging 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
Win32, x64, Linux.
This example loads a bitmap and applies the MeanShift Filter on it
L_INT MeanShiftFilterExample(L_VOID)
{
L_INT nRet;
BITMAPHANDLE LeadBitmap; /*Bitmap handle to hold the loaded image*/
/* Load the bitmap, keeping the bits per pixel of the file */
nRet = L_LoadBitmap (MAKE_IMAGE_PATH(TEXT("IMAGE3.dcm")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL);
if(nRet != SUCCESS)
return nRet;
//Apply Sigma filter
nRet = L_MeanShiftFilterBitmap(&LeadBitmap, 5, 10, 0);
if(nRet != SUCCESS)
return nRet;
//free bitmap
if(LeadBitmap.Flags.Allocated)
L_FreeBitmap(&LeadBitmap);
return SUCCESS;
}
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