L_ApplyModalityLUT

#include "l_bitmap.h"

L_LTIMGCOR_API L_INT L_ApplyModalityLUT (pBitmap, pLUT, pLUTDescriptor, uFlags)

pBITMAPHANDLE pBitmap;	pointer to the main bitmap handle
L_UINT16 *pLUT;	pointer to the lookup table to be applied to the bitmap
pDICOMLUTDESCRIPTOR pLUTDescriptor;	pointer to the structure describing the LUT parameters
L_UINT uFlags;	flags

Remaps the bitmap pixels through a lookup-table (LUT).

Parameter

Description

pBitmap

Pointer to the main bitmap handle.

pLUT

Pointer to the lookup table to be applied to the bitmap.

pLUTDescriptor

Pointer to a structure describing the LUT parameters.

uFlags

A flag that determine the behavior of the function, the user can use one or more flags of the following:

Flags	Meaning
M_LUT_SIGNED	[0x0001] The LUT entries are signed
M_LUT_UPDATE_MIN_MAX	[0x0002] Update MinVal,MaxVal inside the bitmap handle
M_LUT_USE_FULL_RANGE	[0x0004] Do not mask the values in the LUT
M_LUT_ALLOW_RANGE_EXPANSION	[0x0008] Allow the function to increase pBitmap->HighBit (if needed) to be able to hold the data range after applying modality LUT.

Returns

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

Comment

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

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

{                                   }

codeContainer Generic">L_INT ApplyModalityLUTExample(pBITMAPHANDLE pBitmap,L_BOOL  bLinear)   L_INT nRet;  if(bLinear)  {  nRet = L_ApplyLinearModalityLUT (pBitmap, 0.0, 0.5, 0);  if(nRet != SUCCESS)  return nRet;  }  else  {  L_UINT16             *pLUT;  L_UINT16                i;  DICOMLUTDESCRIPTOR   LUTDescriptor;  // allocate and initialize the LUT  pLUT = (L_UINT16 *)malloc(0x10000 * sizeof(L_UINT16));  if(!pLUT)  return ERROR_NO_MEMORY;  // set a LUT which reduces the intensity of each pixel to half  for(i = 0; i <= 0xFFFF; i++)  pLUT[i] = i / 2;  // fill the LUTDescriptor structure  LUTDescriptor.uStructSize =sizeof(LUTDescriptor);  LUTDescriptor.nFirstStoredPixelValueMapped = 0;  LUTDescriptor.uEntryBits = 16;  LUTDescriptor.uNumberOfEntries = 0x10000;  // apply the LUT  nRet = L_ApplyModalityLUT(pBitmap, pLUT, &LUTDescriptor, 0);  if(nRet != SUCCESS)  {  return nRet;  }  // free the LUT  free(pLUT);  }  return SUCCESS;

Help Version 19.0.2017.10.27

LEADTOOLS Raster Imaging C API Help

Introduction

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LEADTOOLS Raster Imaging Features

Redistributables/Files To Be Included With Your Application

Functions:	L_RemapBitmapIntensity , L_ApplyLinearModalityLUT, L_ApplyVOILUT, L_ApplyLinearVOILUT, L_DicomGetModalityLUTAttributes, L_DicomGetModalityLUTData, L_AdjustBitmapTint, L_GammaCorrectBitmapExt
Topics:	Raster Image Functions: Modifying Intensity Values
	Changing Brightness and Contrast
	Raster Image Functions: Changing Brightness and Contrast