Mapping Urban Drainage with Airborne LIDAR Using LP360

On January 11, 2018, Benjamin H. Houston, P.E., PMP, GISP presented a webinar with GeoCue Group, Inc. on mapping urban drainage with airborne LIDAR using LP360. Benjamin Houston has over 25 years of experience with mapping technologies, both from military applications, environmental conservation and public works. He is a licensed professional engineer in New York and…

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ASPSuite: Processing multiple flights in an SBF

If the drone pilot leaves the Loki unit on while swapping batteries on the drone when flying larger sites then there will only be a single SBF covering the multiple flights. Each take off and landing of the aircraft is considered a flight. This is not the recommended workflow and can create problems when post-processing. …

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Errors in Surface Generation

Problem: There are some situations that can cause there to be a mismatch between surface elevations between tiles.  This can become apparent in the vicinity of waterbody breaklines where a tile covers the water but only overlaps with a single shoreline. In this scenario, the surface generation process cannot consider the influence of breaklines on…

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Converting Focal Length from Pixels to Millimeters to use in Bentley Context Capture

The focal length field in ContextCapture requires a focal length in mm instead of pixels. To convert a known focal length in pixels to mm: F(mm) = F(pixels) * SensorWidth(mm) / ImageWidth (pixel). For an X4S, the image width in pixels is 5472. Context Capture indicates the sensor width is 13.2 mm, so the equation…

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Putting LIDAR data on a single layer

When data is originally added to LP360 the selected files will be grouped into layers, depending upon certain criteria so that only compatible LAS files will be on a single LAS layer. When adding new data to the layout, if all the data meets the compatible rules, then checking the option to “Append to Compatible Layers”…

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