Lzw Compression Support Pecl Extension

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PECL :: Package :: lzf

    https://pecl.php.net/package/lzf
    LZF compression. Maintainers marcin gibula < mg at iceni dot pl > (lead) [ details ]

LZW compression What it is & its use in TIFF & PDF

    https://www.prepressure.com/library/compression-algorithm/lzw
    LZW compression works best for files containing lots of repetitive data. This is often the case with text and monochrome images. Files that are compressed but that do not contain any repetitive information at all can even grow bigger! LZW compression is fast. LZW is a fairly old compression technique.

PECL :: Package :: zstd

    https://pecl.php.net/package/zstd
    Zstandard extension Maintainers Tatsuya KAMIJO (lead) [ details ]

PHP: Imagick::getCompression - Manual

    https://www.php.net/manual/en/imagick.getcompression.php
    imagick::COMPRESSION_ZIP 13 Every time I have used this, whether on a jpeg image, a png image, a gif image, or a bmp image, it has always returned '0' as a value. There's a good chance that this is simply a value that is set by means of get/set, as opposed to actually producing values for a given image.

PHP: Imagick::setImageCompression - Manual

    https://www.php.net/manual/en/imagick.setimagecompression.php
    Command Line Specific Extensions Compression and Archive Extensions Credit Card Processing ... Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions ... Imagick::COMPRESSION_LZW. add a note. Imagick. adaptiveBlurImage ...

TIFF

    https://alternatiff.com/resources/TIFF6.pdf
    was to further encourage all mainstream TIFF readers to support the Baseline TIFF requirements for bilevel, grayscale, RGB, and palette-color images. • Due to licensing issues, LZW compression support was moved out of the “Part 1: Baseline TIFF” and into “Part 2: Extensions.”

PHP: Installation of PECL extensions - Manual

    https://www.php.net/manual/de/install.pecl.php
    Compression and Archive Extensions Credit Card Processing Cryptography Extensions ... Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output ... Installation of PECL extensions ...

Lempel–Ziv–Welch - Wikipedia

    https://en.wikipedia.org/wiki/LZW
    Lempel–Ziv–Welch (LZW) is a universal lossless data compression algorithm created by Abraham Lempel, Jacob Ziv, and Terry Welch.It was published by Welch in 1984 as an improved implementation of the LZ78 algorithm published by Lempel and Ziv in 1978. The algorithm is simple to implement and has the potential for very high throughput in hardware implementations.

PECL :: The PHP Extension Community Library

    http://pecl.php.net/
    PECL is a repository for PHP Extensions, providing a directory of all known extensions and hosting facilities for downloading and development of PHP extensions. The packaging and distribution system used by PECL is shared with its sister, PEAR .

TIFF - Wikipedia

    https://en.wikipedia.org/wiki/TIFF
    History. TIFF was created as an attempt to get desktop scanner vendors of the mid-1980s to agree on a common scanned image file format, in place of a multitude of proprietary formats.In the beginning, TIFF was only a binary image format (only two possible values for each pixel), because that was all that desktop scanners could handle. As scanners became more powerful, and as desktop computer ...Developed by: Aldus, now Adobe Systems



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