DIRSIG 4.4.1 Final Release

The Final Release of DIRSIG 4.4.1 is out. This release is primarily a maintenance release to address a few bugs in the 4.4.0 release.

The following is a summary of fixes and features added in this release:

First release to include a Windows 64-bit version
Improvements to correlated deviate models used for jitter

The frequency spectrum can now (optionally) include the phase

New demonstrations

Indoors1
ExtinctionProps1

Blender plug-ins for DIRSIG file formats
Various LIDAR related improvements

Speedups for atmospheric backscatter returns
Bug fix for Linear-mode APD LIDAR detector model

Various GUI bug fixes and improvements
Improvements to streamline integration with SUMO and CityEngine

SUMO vehicle track import utility included on all platforms

Simplified shared library requirements for Solaris 9 and Solaris 10.
Initial MuSES support built-in for the following platforms

Windows 32-bit
Windows 64-bit

We wish to thank those early adopter users for their participation in this release. And we invite you all to give the new features in 4.4.1 a try. It is available for immediate download on myDIRSIG.

Scott, Niek and Adam

The DIRSIG Team

Comments

LIDAR Point Cloud Visualization

A common question we get asked is how to visualize the point cloud data produced by either the Linear-mode or Geiger-mode LIDAR simulations. First, you should remember that the point cloud files produced by the "APD Processor" are simple ASCII/text files. Each line is the entry for a single return or "point" in the point cloud, including the point location and some attributes that vary depending on whether you modeled a Linear-mode or Geiger-mode system. For a Linear-mode system, a point cloud file will generally look like the example below: 12.7388 -45.3612 -0.0256 5.0290 0 0 0 0 12.8169 -45.3612 -0.0264 4.8362 0 1 0 0 12.8950 -45.3612 -0.0271 4.8362 0 2 0 0 ... 32.4008 -25.5446 10.5945 4.6783 0 65533 0 0 32.4781 -25.5446 10.5953 5.8959 0 65534 0 0 32.5360 -25.5640 12.5408 5.9185 0 65535 0 0 The first three columns are the X/Y/Z location of the point return. The 4th column is the intensity (in photons). Since Linear mode can support multiple returns per pulse, t

Viewing and Importing DIRSIG Output Images

We are often asked what programs can view DIRSIG's image outputs and how to import the raw DIRSIG image data files into other tools for further processing. For basic image viewing, DIRSIG-4.4.0 now includes a very simple viewing tool. Launch it from the main simulation editor window by selecting the "Start image viewer" option from the "Tools" menu. If you run your simulation from the GUI simulation editor, new image files are automatically added to the list in the image viewer as they are generated. If you want to manually add files to the list, simply select the "Open" item from the "File" menu or the toolbar. Here is a screenshot of the main image viewer window. The top part contains the list of currently opened files and the bands within those image files. To view a single band as a gray-scale image, choose "Single Band Display" from the combo box and then click on the image band that you want. Finally, click "Load Band

Using MODTRAN6 with DIRSIG

It has been a pretty exciting year for the team at Spectral Sciences, Inc. with the release of MODTRAN6 . This latest version marks a major milestone in the continued development of one of the most popular and trusted codes for simulating radiative transfer in the atmosphere. In addition to important science related advancements, this latest code also includes significant improvements to the general usability of the software. This includes a new graphical user interface (GUI) and the introduction of a formal application programmer interface (API), which let's codes like DIRSIG interact with MODTRAN in a far more robust way than previous versions allowed. New MODTRAN, new interfaces The major development in the interface area is a shift from the old "tape5" style inputs to a new JSON (JavaScript Object Notation) style input. In addition to improving the general readability of the input, the JSON document format is much easier to read in, modify and write back out. The

DIRSIG

Search This Blog