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PdfFilterType Enumeration

Represents an enumeration of standard PdfFilters.

Namespace:  GemBox.Pdf.Filters
Assembly:  GemBox.Pdf (in GemBox.Pdf.dll) Version: 10.0.35.1002
Syntax
public enum PdfFilterType
Members
  Member nameValueDescription
Unknown0PdfFilter is not standard.
ASCIIHexDecode1

Decodes data encoded in an ASCII hexadecimal representation, reproducing the original binary data.

Parameters: no.

ASCII85Decode2

Decodes data encoded in an ASCII base-85 representation, reproducing the original binary data.

Parameters: no.

LZWDecode3

Decompresses data encoded using the LZW (Lempel-Ziv-Welch) adaptive compression method, reproducing the original text or binary data.

Parameters: yes.

FlateDecode4

(PDF 1.2) Decompresses data encoded using the zlib/deflate compression method, reproducing the original text or binary data.

Parameters: yes.

RunLengthDecode5

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).

Parameters: no.

CCITTFaxDecode6

Decompresses data encoded using the CCITT facsimile standard, reproducing the original data (typically monochrome image data at 1 bit per pixel).

Parameters: yes.

JBIG2Decode7

(PDF 1.4) Decompresses data encoded using the JBIG2 standard, reproducing the original monochrome (1 bit per pixel) image data (or an approximation of that data).

Parameters: yes.

DCTDecode8

Decompresses data encoded using a DCT (discrete cosine transform) technique based on the JPEG standard, reproducing image sample data that approximates the original data.

Parameters: yes.

JPXDecode9

(PDF 1.5) Decompresses data encoded using the wavelet-based JPEG2000 standard, reproducing the original image data.

Parameters: no.

Crypt10

(PDF 1.5) Decrypts data encrypted by a security handler, reproducing the data as it was before encryption.

Parameters: yes.

See Also