'Declaration
Public Overloads Sub Export( _ ByVal fileName As String, _ Optional ByVal format As String, _ Optional ByVal quality As Object _ )
'Usage
Dim instance As DicomImage Dim fileName As String Dim format As String Dim quality As Object instance.Export(fileName, format, quality)
Parameters
- fileName
The name of the file to export
- format
The type of export operation to perform
- 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.