3DEP Lidar Base Spec News
Lidar Base Specification Revision Status
This page has tables outlining revision requests and their status for each version of the Lidar Base Specification. Click on the revision request highlighted in the table to read a detailed description of the revision.The first table displays revisions currently under consideration to be published in the next version of the specification.
Clarify Intensity Requirement
The current wording of the intensity requirement in the Lidar Base Specification is overly complex and attempts to limit processing by data producers. This revision will simplify the wording to better cite the ASPRS LAS specification.
Number of Decimal Places
Data are sometimes delivered with many decimal places--far beyond the number of significant digits. This requirement will specify the maximum number of decimal places to be used for linear data. This requirement does not apply to non-linear geographic coordinates.
Lidar Base Specification Online
Withheld flag Proof of Performance Version Control
It is necessary for the withheld bit flag proof of performance to be concurrent with the point cloud delivery.
Report on Withheld flag Proof of Performance
This revision will add a requirement to the Lidar Mapping Report to include a write-up of the withheld bit-flag proof-of-performance methodology.
Point Cloud Delivery in LAZ Format
This requirement will change the delivery format for lidar point clouds delivered to the USGS from LAS to the compressed LAZ format in order to reduce storage requirements.