GetImage Method (DICOMService)

public virtual byte[] GetImage( 
   string sopInstanceUID,
   int frameNumber,
   int imageWidth,
   int imageHeight,
   string mimeType,
   int bitsPerPixel,
   int qualityFactor,
   string extraData
)

'Declaration
 
Public Overridable Function GetImage( _
   ByVal sopInstanceUID As String, _
   ByVal frameNumber As Integer, _
   ByVal imageWidth As Integer, _
   ByVal imageHeight As Integer, _
   ByVal mimeType As String, _
   ByVal bitsPerPixel As Integer, _
   ByVal qualityFactor As Integer, _
   ByVal extraData As String _
) As Byte()

'Usage
 
Dim instance As DICOMService
Dim sopInstanceUID As String
Dim frameNumber As Integer
Dim imageWidth As Integer
Dim imageHeight As Integer
Dim mimeType As String
Dim bitsPerPixel As Integer
Dim qualityFactor As Integer
Dim extraData As String
Dim value() As Byte
 
value = instance.GetImage(sopInstanceUID, frameNumber, imageWidth, imageHeight, mimeType, bitsPerPixel, qualityFactor, extraData)

public virtual byte[] GetImage( 
   string sopInstanceUID,
   int frameNumber,
   int imageWidth,
   int imageHeight,
   string mimeType,
   int bitsPerPixel,
   int qualityFactor,
   string extraData
)

 function Leadtools.Dicom.WCF.DICOMService.GetImage( 
   sopInstanceUID ,
   frameNumber ,
   imageWidth ,
   imageHeight ,
   mimeType ,
   bitsPerPixel ,
   qualityFactor ,
   extraData 
)

public:
virtual array<byte>^ GetImage( 
   String^ sopInstanceUID,
   int frameNumber,
   int imageWidth,
   int imageHeight,
   String^ mimeType,
   int bitsPerPixel,
   int qualityFactor,
   String^ extraData
) 

Parameters

sopInstanceUID

The SOP Instance UID of the DICOM object.

frameNumber

A 1 based number of the frame you want to retrieve from the image. Pass 0 to get a representative frame and -1 to get the full image with all frames.

imageWidth

The width, in pixels, of the image. The returned image might have different width to preserve scale ratio. Pass 0 to keep the original width.

imageHeight

The Height, in pixels, of the image. The returned image might have different height to preserve scale ratio. Pass 0 to keep the original height.

mimeType

A System.String representing the file format and compression of the image. Check the Leadtools.Dicom.Services.DataTypes.SupportedImageFormat class for supported file formats and compression.

bitsPerPixel

Resulting image's pixel depth. Note that not all bits per pixel are available to all image formats. If bitsPerPixel is 0, the image will be stored using the original or closet bits/pixel value supported by that format.

qualityFactor

The quality factor (Q factor) is a number that determines the degree of loss in the compression process. Use 0 for Lossless compression or you can set a value from 2 to 255, where 2 is the highest quality and 255 is the most compression.

extraData

User custom data.

Return Value

NOTE: When the mime type is set to ("application/gzip"), and the image is 12-bit/16-bit grayscale, a specially formatted result will be returned. The data will be compressed XML data, where the compression is of gzip data format, which uses an industry standard algorithm for lossless file compression and decompression. You may use the Microsoft System.IO.Compression.GZipStream class to decompress this buffer.

The XML text is ASCII encoded, with the following structure:

             <?xml version='1.0'?>
             <doc title='_lt_zipped_gray'>
             <LUT>EBAQE…………BAAA</LUT>
             <Data>wD+wP…………8AP8A/sD+w</Data>
             <Width>640</Width>
             <Height>480</Height>
             <BitsPerPixel>16</BitsPerPixel>
             <MinValue>63</MinValue>
             <MaxValue>1022</MaxValue>
             </doc>
             

The XML represents an uncompressed Leadtools.RasterImage with the following fields:

• LUT: 16bits/12bits lookup table, each entry is of 3 bytes, Red, Green then Blue components. Please refer to RasterImage.GetLookupTable.
• Data: This is the image buffer (uncompressed), the result of calling RasterImage.GetRow for each row of the image.
• Width: This is the image’s width, see RasterImage.Width.
• Height: This is the image’s height, see RasterImage.Height.
• BitsPerPixel: This is the image’s bits per pixel, see RasterImage.BitsPerPixel.
• MinValue: This is the image’s minimum grayscale value, see RasterImage.MinValue.
• MaxValue: This is the image’s maximum grayscale value, see RasterImage.MaxValue.

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

DICOMService Class
DICOMService Members