eCPD - Quality Assessment
Date & Time
Friday, 18 Feb 2022
- 5:00 pm
This is a recording of a live webinar held 18 August 2020.
As an established measurement technology, photogrammetry has long had well-understood and reliable techniques to assess the quality of the solution derived from the imagery and control information provided to it that specialists in photogrammetry would be familiar with and comfortable applying.
However, these techniques do not necessarily translate to the so-called structure-from-motion (SfM) algorithms that are increasingly being used by surveyors even though to non-specialists the two technologies appear to be the same and the products using those algorithms may not even make it clear that they are doing so.
This can manifest itself in two ways:
- Reporting that the data generated is orders of magnitude more accurate than it really is.
- Failing to detect gross errors in the input data (e.g. bad control points) or derived data (e.g. a bad camera calibration).
Both can create a false belief in the quality of the generated data, especially among those who mistakenly associate the behaviour and accuracy characteristics of photogrammetry with SfM.
In this talk we will identify the underlying cause of these differences and discuss approaches that practitioners in the field can take to mitigate the problem.
Jason Birch, ADAM Technology
Jason joined ADAM Technology as a developer in 1996 when the 3DM technology was still in its infancy, then became Product Development Manager, R&D Manager, and finally Managing Director in 2004. He and his team have been at the cutting edge of photogrammetry for two decades and are always interested to find new applications of the technology.
By registering below, you will receive a link to the recording to watch at a time that suits you!
This event is worth one SSSI CPD Point. Note, only the individual registered for the event is entitled to receive the associated CPD points.
Katie Le Miere
National Events Manager