'Declaration
Public Overloads Sub Export( _ ByVal stream As Stream, _ ByVal format As String, _ ByVal quality As Object _ )
'Usage
Dim instance As DicomImage Dim stream As Stream Dim format As String Dim quality As Object instance.Export(stream, format, quality)
Parameters
- stream
The stream into which the image is written
- format
The file format you would like to export image to
- quality
The quality factor to be used. This is a generic compression quality depending on the Transfer Syntax used. This value for JPEG Baseline and JPEG Extended compression represents an integer between 0 – 100. This tells DicomObjects to set up the compressor to try to achieve the quality in percentage (higher quality value towards 100 means better quality and lower compression ratio). And for JPEG-LS Lossy and JPEG2000 Lossy compression this value is actually the desired compression ratio, i.e. if you set the quality value to 10, it tells DicomObjects to try to achieve compression ratio of 10. The actual compression ratio achieved will not be exactly the same as specified by quality value but close enough. The actual compression ratio is calculated based on the original data size and the compressed data size before it is added to “Lossy Image Compression Ratio” tag of the image. For Video compression, this value directly corresponds to the BitsPerSecond of the compressed video.