laszip.org - LASzip - free and lossless LiDAR compression — LASzip 3.4.3 documentation

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LASzip - a free open source product of rapidlasso GmbH - quickly turns bulky LAS files into compact LAZ files without information loss. Terabytes of LAZ data are now available for free download from various agencies making LASzip, winner of the 2012 Geospatial World Forum Technology Innovation Award in LiDAR Processing and runner-up for innovative product at INTERGEO 2012 , the de-facto standard for LiDAR compression.

The LGPL-licensed LASzip library is easiest integrated via the DLL that is in the LASzip subdirectory of the LAStools distribtion. Other options are to link LASzip via the BSD-licensed libLAS library or to work with the LASlib library which fully integrates and enhances the LASzip codebase with spatial indexing, filters, transforms, geo-referencing, … of LAS and LAZ files.

LASzip is a compression library that was developed by Martin Isenburg for compressing ASPRS LAS format data in his LAStools . It has been provided as an LGPL -licensed stand-alone software library to allow other softwares that handle LAS data to read and write LASzip-compressed data. The BSD-licensed libLAS and the LGPL-licensed LASlib can take advantage of LASzip to read and write compressed data.

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