L_DicomSetImageList
#include "Ltdic.h"
L_UINT16 EXT_FUNCTION L_DicomSetImageList(hDS, pElement, hList, nCompression, nPhotometric, nBitsPerPixel, nQFactor, uFlags)
|
HDICOMDS hDS; |
/* a DICOM handle */ |
|
pDICOMELEMENT pElement; |
/* pointer to a DICOMELEMENT structure */ |
|
HBITMAPLIST hList; |
/* handle to the list of bitmaps */ |
|
L_INT32 nCompression; |
/* compression type */ |
|
L_INT32 nPhotometric; |
/* photometric constant */ |
|
L_INT32 nBitsPerPixel; |
/* resulting bitmap pixel depth */ |
|
L_INT32 nQFactor; |
/* quality factor */ |
|
L_UINT uFlags; |
/* flags */ |
Replaces the images in a Pixel Data element with images in a bitmap list.
|
Parameter |
Description |
|
|
hDS |
A DICOM handle. |
|
|
pElement |
Pointer to a DICOMELEMENT structure within the Data Set. |
|
|
hList |
Handle to the list of bitmaps. |
|
|
nCompression |
Value that indicates the type of compression to use. Possible values are: |
|
|
|
Value |
Meaning |
|
|
IMAGE_COMPRESSION_NONE |
[0x00] No compression. |
|
|
IMAGE_COMPRESSION_RLE |
[0x01] RLE compression. |
|
|
IMAGE_COMPRESSION_JPEG_LOSSLESS |
[0x02] JPEG LossLess compression. |
|
|
IMAGE_COMPRESSION_JPEG_LOSSY |
[0x03] JPEG Lossy compression. |
|
|
IMAGE_COMPRESSION_J2K_LOSSLESS |
[0x06] JPEG 2000 lossless compression. |
|
|
IMAGE_COMPRESSION_J2K_LOSSY |
[0x07] JPEG 2000 Lossy compression. |
|
nPhotometric |
Photometric constant. Possible values are: |
|
|
|
Value |
Meaning |
|
|
IMAGE_PHOTOMETRIC_MONOCHROME2 |
[0x01] 8- or 16-bits per pixel, grayscale image. |
|
|
IMAGE_PHOTOMETRIC_PALETTE_COLOR |
[0x02] 8-bits per pixel, palettized color image. |
|
|
IMAGE_PHOTOMETRIC_RGB |
[0x03] 24-bits per pixel, RGB color image. |
|
nBitsPerPixel |
Resulting bitmap pixel depth. Possible values are: |
|
|
|
Value |
Meaning |
|
|
0 |
Keep the original file's pixel depth (Do not convert). |
|
|
1 to 8 |
The specified bits per pixel in the resultant bitmap |
|
|
12 |
12 bits per pixel in the resultant bitmap. |
|
|
16 |
16 bits per pixel in the resultant bitmap |
|
|
24 |
24 bits per pixel in the resultant bitmap |
|
|
32 |
32 bits per pixel in the resultant bitmap |
|
nQFactor |
The quality factor (Q factor) is a number that determines the degree of loss in the compression process. You can set a value from 2 to 255, where 2 is the highest quality and 255 is the most compression. |
|
|
uFlags |
Flags which control the behavior of this function. : |
|
|
|
Value |
Meaning |
|
|
DICOM_SETIMAGE_AUTO_SET_VOI_LUT |
[0x0002]If set, the function will automatically add a VOI LUT to the dataset. |
|
|
DICOM_SETIMAGE_MINIMIZE_JPEG_SIZE |
[0x0004] If set, and the nCompression parameter is IMAGE_COMPRESSION_JPEG_LOSSLESS or IMAGE_COMPRESSION_JPEG_LOSSY, the JPEG compression engine will use optimized Huffman tables, which results in better compression, but slower speed. |
Returns
|
0 |
SUCCESS |
|
>0 |
An error occurred. Refer to Return Codes. |
Comments
This function replaces all the images in the Pixel Data Element with the images referenced by hList.
Most DICOM files will only have one Data Element of type TAG_PIXEL_DATA. Therefore, in most instances you can set pElement to NULL, since the function will automatically replace the images of the only Pixel Data Element in the file. If pElement is not NULL, it must point to the Pixel Data Element itself.
If the DICOM file is CLASS_BASIC_DIRECTORY, the file may contain more than one Pixel Data Element. In this case you must specify in pElement the Pixel Data Element in which the images will be replaced.
If you wish to replace only one image within the Pixel Data Element, you must use L_DicomDeleteImage and L_DicomInsertImage.
For a table of possible Compression, Photometric, BitsPerPixel, and Quality Factor combinations, refer to Compression Table.
For more options when using the JPEG 2000 compression, refer to L_DicomSetJ2KOptions.
This function will either insert, delete or update one or more of the following elements:
|
Tag |
Name |
|
(7FE0,0010) |
Pixel Data |
|
(0002,0010) |
Transfer Syntax UID |
|
(0028,0101) |
Bits Stored |
|
(0028,0100) |
Bits Allocated |
|
(0028,0102) |
High Bit |
|
(0028,0103) |
Pixel Representation |
|
(0028,0010) |
Rows |
|
(0028,0011) |
Columns |
|
(0028,0002) |
Samples per Pixel |
|
(0028,0006) |
Planar Configuration |
|
(0028,0004) |
Photometric Interpretation |
|
(0028,0106) |
Smallest Image Pixel Value |
|
(0028,0107) |
Largest Image Pixel Value |
|
(0028,1101) |
Red Palette Color Lookup Table Descriptor |
|
(0028,1102) |
Green Palette Color Lookup Table Descriptor |
|
(0028,1103) |
Blue Palette Color Lookup Table Descriptor |
|
(0028,1201) |
Red Palette Color Lookup Table Data |
|
(0028,1202) |
Green Palette Color Lookup Table Data |
|
(0028,1203) |
Blue Palette Color Lookup Table Data |
|
(0028,1199) |
Palette Color Lookup Table UID |
|
(0028,1052) |
Rescale Intercept |
|
(0028,1053) |
Rescale Slope |
|
(0028,1054) |
Rescale Type |
|
(0028,1221) |
Segmented Red Palette Color Lookup Table Data |
|
(0028,1222) |
Segmented Green Palette Color Lookup Table Data |
|
(0028,1223) |
Segmented Blue Palette Color Lookup Table Data |
|
(0028,3010) |
VOI LUT Sequence |
|
(0028,1050) |
Window Center |
|
(0028,1051) |
Window Width |
|
(0028,1055) |
Window Center & Width Explanation |
|
(0028,0008) |
Number of Frames |
|
(0054,0070) |
Time Slot Vector |
This function is indifferent to the pixel data restrictions imposed by the various DICOM IOD classes, for example this function will allow the user to insert a colored image into a "Digital X-Ray Image Storage" dataset.
This function will always insert a "Number of Frames" (0028, 0008) element and set its value.
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 |
See Also
|
Functions: |
L_DicomGetImage, L_DicomGetImageList, L_DicomInsertImage, L_DicomInsertImageList, L_DicomSetImage |
|
Topics: |
Example
/* This example sets a multi-frame image in Data Set */
L_VOID Test(HBITMAPLIST hList)
{
HDICOMDS hDS;
pDICOMELEMENT pElement;
hDS = L_DicomCreateDS(NULL);
L_DicomLoadDS(hDS, "c:\\ltwin13\\images\\image1.dic", 0);
pElement = L_DicomFindFirstElement(hDS, NULL, TAG_PIXEL_DATA, FALSE);
if (pElement != NULL)
{
L_DicomSetImageList(hDS, pElement, hList, IMAGE_COMPRESSION_JPEG_LOSSLESS,
IMAGE_PHOTOMETRIC_RGB, 0, 0, DICOM_SETIMAGE_AUTO_SET_VOI_LUT);
}
L_DicomFreeDS(hDS);
}