dmagick.c.compress
- enum CompressionType: int;
Express the desired compression type when encoding an image. Be aware that most image types only support a sub-set of the available compression types. If the compression type specified is incompatible with the image, ImageMagick selects a compression type compatible with the image type.
- UndefinedCompression
- NoCompression
The default for most formats.
- BZipCompression
BZip (Burrows-Wheeler block-sorting text compression algorithm and Huffman coding) as used by bzip2 utilities
- DXT1Compression
- DXT3Compression
- DXT5Compression
- FaxCompression
CCITT Group 3 FAX compression.
- Group4Compression
CCITT Group 4 FAX compression (used only for TIFF).
- JPEGCompression
JPEG compression.
See Also:
The JPEG image compression FAQ.- JPEG2000Compression
JPEG2000 compression for compressed PDF images.
ISO/IEC std 15444-1
- LosslessJPEGCompression
- LZWCompression
Lempel-Ziv-Welch (LZW) compression.
- RLECompression
Run-length encoding.
See Also:
Wikipedia.- ZipCompression
Lempel-Ziv compression (LZ77) as used in PKZIP and GNU gzip.
- ZipSCompression
- PizCompression
- Pxr24Compression
- B44Compression
- B44ACompression
- LZMACompression
Lempel-Ziv-Markov chain algorithm
- JBIG1Compression
ISO/IEC std 11544 / ITU-T rec T.82
- JBIG2Compression
ISO/IEC std 14492 / ITU-T rec T.88