The Inter-governmental Committee on Survey and Mapping (ICSM) recognised the need for standardisation of the acquisition of elevation data, particularly LiDAR, and produced the ICSM LiDAR Acquisition Specifications and Tender Template (ICSM Tender) in Nov 2010.
Part of the acquisition template includes quality control standards to be employed by LiDAR acquisition companies. However, it is difficult for those agencies using the ICSM template to assess data provided by LiDAR companies against these specifications.
It is therefore important to have an independent checking mechanism available that can be performed on the supplied LiDAR data upon delivery to the contracting agency in an effective and efficient manner.
This Project will develop a standard (ICSM supported) LiDAR Quality Assurance procedure to complement the ICSM LiDAR Acquisition Specifications and Tender Template. This procedure will leverage existing tools within esri ArcGIS.
The procedure will involve users selecting the checks to be performed and allowing the tool within esri ArcGIS to perform the relevant checks and produce a standard QA report. The tool will also be able to quality assure other datasets which comply with the formats specified within the ICSM template, and will be accompanied by a set of guidelines for undertaking QA independent of the software used for this project.
The development of ComQAT (Compliance and Quality Assurance Tool for elevation data – primarily airborne LiDAR) is nearing completion.
The ComQAT Tender Form and ComQAT Report Form, which allow the tool to automatically extract the project specifications and results, are ready to use.
Read more about the tool and comment on this highlight at the blog...