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L_MultiScaleEnhancementBitmap

Summary

Enhances an image's contrast, edges, and density range for use in Computed Radiography (CR), in a way that all relevant image features are rendered with an appropriate level of visibility.

Syntax

#include "l_bitmap.h"

L_LTIMGCOR_API L_INT L_MultiScaleEnhancementBitmap (pBitmap, uContrast, uEdgeLevels, uEdgeCoeff, uLatitudeLevels, uLatitudeCoeff, uFlags)

Parameters

pBITMAPHANDLE pBitmap

Pointer to the bitmap handle.

L_UINT uContrast

Amount of contrast enhancement.

L_UINT uEdgeLevels

Number of levels used in edge enhancement.

L_UINT uEdgeCoeff

Degree of edge enhancement.

L_UINT uLatitudeLevels

Number of levels used in latitude reduction.

L_UINT uLatitudeCoeff

Degree of latitude reduction.

L_UINT uFlags

Value that determines the type of filter that will be used when applying the MultiScale enhancement filter, one or more flags can be used. Possible values are:

Flags	Meaning
MSE_GAUSSIAN	[0x0000] Uses Gaussian filter.
MSE_RESAMPLE	[0x0001] Uses Resample filter.
MSE_BICUBIC	[0x0002] Uses Bicubic filter.
MSE_NORMAL	[0x0003] Uses Normal filter.
MSE_EDGEENH	[0x0010] Adds the latitude reduction option. When this flag is set, the `uLatitudeLevels` and `uLatitudeCoeff` parameters will be used.
MSE_LATRED	[0x0020] Adds the edge enhancement option. When this flag is set, the `uEdgeLevels` and `uEdgeCoeff` properties will be used.
MSE_DONTUSE_MULTITHREADING	[0x0040] Do not use multi-threading (Use this with single-core CPUs).
MSE_DEFAULT	[-1] Use the default level value (which is 5).

Returns

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

Comments

It also can process the whole image or a region of the image. If a bitmap has a region, the effect is applied only to the region.

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.

Multiscale Enhancement Function - Before

Multiscale Enhancement Function - After

View additional platform support for this Multiscale Enhancement function.

Required DLLs and Libraries

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, Linux.

Example

This example loads a bitmap and applies multiscale enhancement.

L_INT MultiScaleEnhancementBitmapExample(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("IMAGE1.CMP")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGRORGRAY, NULL, NULL); 
   if (nRet != SUCCESS) 
      return nRet; 
 
   // Apply multiscale enhancement 
   nRet = L_MultiScaleEnhancementBitmap(&LeadBitmap, 2000, 4, MSE_DEFAULT, 0, 0, MSE_GAUSSIAN | MSE_EDGEENH); 
   if (nRet != SUCCESS) 
      return nRet; 
 
   nRet = L_SaveBitmap(MAKE_IMAGE_PATH(TEXT("Result.BMP")), &LeadBitmap, FILE_BMP, 24, 0, NULL); 
   if (nRet != SUCCESS) 
      return nRet; 
 
   //free bitmap 
   if (LeadBitmap.Flags.Allocated) 
      L_FreeBitmap(&LeadBitmap); 
 
   return SUCCESS; 
}