 | PdfFilterType Enumeration |
PDF stream and image compression filters.
Namespace: Opait.Pdf.Api
Assembly: Opait.Pdf.Api (in Opait.Pdf.Api.dll) Version: 1.3.3.0
SyntaxC#
public enum PdfFilterType
Members| Member name | Value | Description | |
|---|---|---|---|
| None | 0 | Data is not filtered. | |
| AsciiHexDecode | 1 | Decodes data encoded in an ASCII hexadecimal representation, reproducing the original binary data. | |
| Ascii85Decode | 2 | Decodes data encoded in an ASCII base-85 representation, reproducing the original binary data. | |
| LzwDecode | 3 | Decompresses data encoded using the LZW (Lempel-Ziv-Welch) adaptive compression method, reproducing the original text or binary data. | |
| FlateDecode | 4 | Decompresses data encoded using the zlib/deflate compression method, reproducing the original text or binary data. | |
| RunLengthDecode | 5 | Decompresses data encoded using a byte-oriented run-length encoding algorithm, reproducing the original text or binary data (typically monochrome image data, or any data that contains frequent long runs of a single byte value). | |
| CcittFaxDecode | 6 | Decompresses data encoded using the CCITT facsimile standard, reproducing the original data (typically monochrome image data at 1 bit per pixel). | |
| Jbig2Decode | 7 | Decompresses data encoded using the JBIG2 standard, reproducing the original monochrome (1 bit per pixel) image data (or an approximation of that data). | |
| DctDecode | 8 | Decompresses data encoded using a DCT (discrete cosine transform) technique based on the JPEG standard, reproducing image sample data that approximates the original data. | |
| JpxDecode | 9 | Decompresses data encoded using the wavelet-based standard, reproducing the original image data. | |
| Crypt | 10 | Decrypts data encrypted by a security handler, reproducing the original data as it was before encryption. |
See Also