Our goal is to process your data as quickly and efficiently as possible to ensure customer delight. We invest a significant amount of effort to process the data successfully the first time. However, capturing these thousands of images might be challenging. Therefore, we created this article, taking into account the best practices that will save you a lot of time and frustration during the data acquisition. First we will share the min requirements for the flight plan.
For the Solar Construction data product we require only visual (RGB) photos. A drone pilot will use an unmanned aerial system (a drone with a camera) to capture the data on site.
Visual (RGB) Image Requirements
GSD: 2.0 ± 0.5cm per pixel at ground level.
Front-Overlap: min 75%.
If the terrain or the assets to be mapped are too complex, please increase the front overlap.
Side Overlap: min 70%.
If the terrain or the assets to be mapped are too complex, please increase the side overlap.
Flight Path: At least 2 flight lines should be outside the boundaries of the operation in all directions.
Gimbal Orientation: Nadir (-90 deg). Capture additional oblique photos for improved quality in case of complex terrains/buildings.
Image Format: JPEG
Each image should contain the following metadata: GPS location, relative altitude and timestamp.
Image Quality: in focus, free from motion blur and with minimal glare.
Average Daily Coverage: 200 ha.
At least 20 photos need to be uploaded.
Ground Control Points
Ground Control Points (GCPs) are optional, but highly recommended. Even when using photos that have been geotagged using a Real Time Kinematic (RTK) or a Post Processing Kinematic (PPK) solution, we highly recommend placing at least one GCP for optimal position accuracy of the end result.
If you would like to take advantage of our digital thread feature for object fusing you will need a very high absolute accuracy for each inspection that can only be achieved with the use of GCPs or a combination of PPK/RTK and GCPs. For more information on how to achieve this level of accuracy we have a support article to help here.
For more information on how to use Ground Control Points, please refer to the following article: How to Use Ground Control.
Blocks cannot be used for this data product, since one homogeneous output has to be produced.