L_DicomSetJ2KOptions

#include "ltdic.h"

L_LTDIC_API L_UINT16 L_DicomSetJ2KOptions(hDS, pOptions)

HDICOMDS hDS;

a DICOM handle

const pFILEJ2KOPTIONS  pOptions;

pointer to a structure

Sets the JPEG 2000 compression options.

Parameter

Description

hDS

A DICOM handle.

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

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.

See Also

Functions:

L_DicomInsertImage, L_DicomInsertImageList, L_DicomSetImage, L_DicomSetImageList, L_DicomGetJ2KOptions, L_DicomGetDefaultJ2KOptions

Topics:

Working with Data Sets

 

Programming with JPEG 2000 Features

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; 
} 

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