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Clean DTM from Agisoft Photogrammetric Points of Urban Scene
We occasionally get permission to distribute a nice data sets and blog about how to best process it with LAStools because this gets around having to pay our “outrageous” consulting fees. (-: This time...
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How Many Decimal Digits for Storing Longitude & Latitude?
Recently I came across this tweet containing the image below and it made me laugh … albeit not in the original way the tweet intended. The tweet was joking that “Anyone is able to open a GeoJSON file”...
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LASmoons: Olumese Efeovbokhan
Olumese Efeovbokhan (recipient of three LASmoons) Geosciences, School of Geography University of Nottingham, UK Background: One of the vital requirements to successfully drive and justify favorable...
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LASmoons: Nicolas Barth
Nicolas Barth (recipient of three LASmoons) Department of Earth & Planetary Sciences University of California, Riverside UNITED STATES Background: The 850 km-long Alpine Fault (AF) is one of the...
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Removing Low Noise in LiDAR Points with Median Ground Surface
Recently a user of LAStools asked a question in our user forum about how to classify LiDAR data that contains lots of low noise. A sample screen shot of the user’s failed attempt to correctly classify...
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LASmoons: Gabriele Garnero
Gabriele Garnero (recipient of three LASmoons) Interuniversity Department of Regional and Urban Studies and Planning Politecnico e Università degli Studi, Torino ITALY Background: Last spring, the...
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National Open LiDAR Strategy of Latvia humiliates Germany, Austria, and other...
Latvia, officially the Republic of Latvia, is a country in the Baltic region of Northern Europe has around 2 million inhabitants, a territory of 65 thousand square kilometers and – since recently –...
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Another German State Goes Open LiDAR: Saxony
Finally some really good news out of Saxony. After North Rhine-Westphalia and Thuringia released the first significant amounts of open geospatial data in Germany in a one-two punch in January 2017, we...
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Completeness and Correctness of Discrete LiDAR Returns per Laser Pulse fired
Again and again we have preached about the importance of quality checking when you first get your expensive LiDAR data from the vendor or your free LiDAR data from an open data portal. The minimal...
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Another European Country Opens LiDAR: Welcome to the Party, Slovakia!
We got a little note from Vítězslav Moudrý from CULS pointing out that the Geodesy, Cartography and Cadastre Authority of the Slovak Republic has started releasing LiDAR as open data on their...
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Removing Noise from Single Photon LiDAR to Generate a Smooth DTM
A while back we had a first look at the Single Photon LiDAR from Leica’s SPL100 sensor (that eventually turned out just to be an SPL99 because one beamlet or one receiver in the 10 by 10 array was...
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LASmoons: Volga Lipwoni
Volga Lipwoni (recipient of three LASmoons) Department of Geography, School of Earth and Environment University of Canterbury, NEW ZEALAND Background: Structure from motion (SfM) photogrammetry, has...
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Converting Rasters from inefficient ASCII XYZ to more compact LAZ or TIF Formats
The German state of Brandenburg has recently started to provide many of their basic geospatial data as open data, such as digital ortophotos in TIF and JPG formats, vertical and horizontal control...
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Philippines use Taal Vulcano Eruption as Opportunity to become Very First...
UPDATE: As of January 30th also orthophotos and classified LAZ tiles are available for download. It took just a few years of nagging, a vulcanic eruption, and then a few more weeks of nagging but now...
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Surprise Release of Airborne LiDAR in Germany’s “Closed Data State” Bavaria
You have guessed correctly. This is mostly fake news as our “Freistaat” (read “Free State“) of Bavaria continues to tightly guard all of its tax-payer funded geospatial basis data for no good reason....
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Coco Loco for LiDAR: Open Data and 3D GIS Carnival Cruise into Sao Paulo
The municipality of São Paulo just dropped a MASSIVE amount of open LiDAR upon the geospatial community – a whopping 33 billion points. São Paulo city now has their own Entwine Point Tiles (EPT)...
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LASmoons: Martin Romain
Martin Romain (recipient of three LASmoons) Marshall Islands Conservation Society Majuro, Republic of the MARSHALL ISLANDS Background: As a low-lying coastal nation, the Republic of the Marshall...
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LASmoons: Zak Kus
Zak Kus (recipient of three LASmoons) Topology Enthusiast San Francisco, USA Background: While LiDAR data enables a lot of research and innovation in a lot of fields, it can also be used to create...
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LASmoons: Leonidas Alagialoglou
Leonidas Alagialoglou (recipient of three LASmoons) Multimedia Understanding Group, Aristotle University of Thessaloniki Thessaloniki, GREECE Background: Canopy height is a fundamental geometric tree...
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Swiss add liberal “Open LiDAR” and break with conservative stereotypes like...
My new favorite Swiss Miss, Viola Amherd, said today “Geodaten gehören heute zur Infrastruktur wie die Straßen und die Eisenbahn”, which says that “today, geodata are part of the infrastructure like...
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