List return the list of all supported PDF filters.

NewFilter returns a filter for given filterName and an optional parameter dictionary.

PDF defines the following filters.

PDF defines the following filters.

PDF defines the following filters.

PDF defines the following filters.

PDF defines the following filters.

PDF defines the following filters.

PDF defines the following filters.

PDF defines the following filters.

For predictor > 2 PNG filters (see RFC 2083) get applied and the first byte of each pixelrow defines the prediction algorithm used for all pixels of this row.

For predictor > 2 PNG filters (see RFC 2083) get applied and the first byte of each pixelrow defines the prediction algorithm used for all pixels of this row.

For predictor > 2 PNG filters (see RFC 2083) get applied and the first byte of each pixelrow defines the prediction algorithm used for all pixels of this row.

For predictor > 2 PNG filters (see RFC 2083) get applied and the first byte of each pixelrow defines the prediction algorithm used for all pixels of this row.

For predictor > 2 PNG filters (see RFC 2083) get applied and the first byte of each pixelrow defines the prediction algorithm used for all pixels of this row.

Use PNGAverage for all rows.

No prediction.

Use PNGNone for all rows.

Use the optimum PNG prediction for each row.

Use PNGPaeth for all rows.

Use PNGSub for all rows.

Use TIFF prediction for all rows.

Use PNGUp for all rows.

PDF defines the following filters.

ErrUnsupportedFilter signals unsupported filter encountered.

Filter defines an interface for encoding/decoding PDF object streams.