On popular demand the full functional demo version is being provided with a license of 5 days. After expiry either you procure a perpetual license or again download a new 5-days license.

LASUtility

Most of the vendors provide LiDAR data in LAS format. However, still LAS is not a part of several GIS, Image processing, DEM, and point cloud processing packages. This software provides several utilities that can help in working with LAS files, including:

    (a) Interactive display of LAS file contents (header records & point cloud data)  in text.
    (b) Graphical display of LAS file point cloud.
    (c) Stitch the different LAS files of same format in one large LAS file.
    (d) Trim LAS file based on a graphically selected area of interest or range of point data records.
    (e) Conversion among different LAS file formats.
    (f)  Convert a LAS file into ASCII file with XYZ and Intensity.
    (g) Convert XYZ, Intensity  and return number stored in a text file into equivalent LAS file.
    (h) Convert whole contents of a LAS file into text file.

This software can be useful for those who wish to use existing GIS or other in-house software for processing LAS file and do not want to invest in procuring the dedicated LiDAR processing software.

Files conforming to the ASPRS LIDAR data exchange format standard are named with an LAS extension. The LAS file is intended to contain LIDAR point data records. The data will generally be put into this format from software (provided by LIDAR hardware vendors) which combines GPS, IMU, and laser pulse range data to produce X, Y, and Z point data. The intention of the data format is to provide an open format which allows different LIDAR vendors to output data into a format which a variety of LIDAR software vendors can use. Software that creates the LAS file will be referred to as “generating software”, and software that reads and writes to the LAS file will be referred to as “user software” within this specification. The format contains binary data consisting of a header block, variable length records, and point data. All data is in little-endian format. The header block consists of a public block followed by variable length records. The public block contains generic data such as point numbers and coordinate bounds. The variable length records contain variable types of data including projection information, metadata, and user application data. (ASPRS, 2003).

Reference:  ASPRS LIDAR Data Exchange Format Standard, Version 1.0, May 9, 2003
 

Copyright Dr.Bharat Lohani, IIT Kanpur
Designed and developed by  R K Mishra, IIT Kanpur