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L_DicomSetJ2KOptions

Summary

Sets the JPEG 2000 compression options.

Syntax

#include "ltdic.h"

L_LTDIC_API L_UINT16 L_DicomSetJ2KOptions(hDS, pOptions)

Parameters

HDICOMDS hDS

A DICOM handle.

const pFILEJ2KOPTIONS pOptions

Pointer to a structure that contains the options to use when compressing the image(s) in a Pixel Data element using the JPEG 2000 compression.

Returns

Value	Meaning
DICOM_SUCCESS	The function was successful.
>0	An error occurred. Refer to Return Codes.

Comments

The nSize member of the FILEJ2KOPTIONS structure must be set before calling this function.

Required DLLs and Libraries

LTDIC
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 inserts an image in a Data Set
Using the JPEG 2000 compression with a 100:1
compression ratio

L_INT DicomSetJ2KOptionsExample(HDICOMDS hDS, pBITMAPHANDLE pBitmap) 
{ 
   L_UINT16 nRet; 
 
   if(hDS && pBitmap) 
   { 
      pDICOMELEMENT pElement; 
      FILEJ2KOPTIONS J2KOptions; 
       
      // Get the current JPEG 2000 compression options.  
      nRet = L_DicomGetJ2KOptions(hDS, &J2KOptions, sizeof(FILEJ2KOPTIONS)); 
      if (nRet != DICOM_SUCCESS) 
         return nRet; 
 
      J2KOptions.uCompressionControl = J2K_COMPRESSION_RATIO; 
      // set the compression ratio to 100 
      J2KOptions.fCompressionRatio = 100.0f; 
      // Update the JPEG 2000 compression options.  
      nRet = L_DicomSetJ2KOptions(hDS, &J2KOptions); 
      if (nRet != DICOM_SUCCESS) 
         return nRet; 
 
      pElement = L_DicomFindFirstElement(hDS, NULL, TAG_PIXEL_DATA, FALSE); 
      if (pElement != NULL) 
      { 
         nRet = L_DicomInsertImage(hDS, 
            pElement, 
            pBitmap, 
            1, 
            IMAGE_COMPRESSION_J2K_LOSSY, 
            IMAGE_PHOTOMETRIC_MONOCHROME2, 
            0, 
            25, 
            DICOM_SETIMAGE_AUTO_SET_VOI_LUT, 
            NULL, 
            NULL); 
         if (nRet != DICOM_SUCCESS) 
            return nRet; 
      } 
   } 
   return DICOM_SUCCESS; 
}