PngFilterType Enumeration
Represents PNG image filter type.

Namespace: GroupDocs.Signature.Options
Assembly: GroupDocs.Signature (in GroupDocs.Signature.dll) Version: (19.9)
public enum PngFilterType
  Member nameValueDescription
None0The null-filter, means no filtering for image data rows.
Sub1 The sub filter, means subtractive filtering will be applied to image data.
Up2The up filter, means row-by-row subtraction filter will be applied.
Avg3The avg filter, means, that average filter will be applied to image data.
Paeth4The path predictor filter.
Adaptive5 Adaptive filtering, means that saving process will choose most suitable filter for each data row. Best compression, slowest execution time.
See Also