Gender
Male
About
Location
Honolulu, HI
About Me:
Geographer with experience in collection, processing and analysis of satellite, aerial and UAV imagery
Please tell us a bit about your UAV interest
Mapping and monitoring terrestrial and marine environments in the tropics
Hometown:
HONOLULU
Activity Feed
"Thanks for the clarification, Brandon. I think that the 2D functionality is sufficient for many users. Does the software license also include 2 installations and the Mapbox deal?
BTW, we're focused mainly on fixed wings... It was David who was…"
BTW, we're focused mainly on fixed wings... It was David who was…"
"Overall I think this is a pretty good deal, but having more flexibility in options for sensors and software would be ideal. I also question the need for a slimmed down version of Pix4D Mapper.
We've been working with custom built Skywalkers with…"
We've been working with custom built Skywalkers with…"
"It's not about the short distances, but rather where on the globe you are. Distortions will be greater for areas farther from the equator. That's why local reference systems like UTM or state plane are more appropriate for measurements. Here's…"
The National Geospatial Intelligence Agency has released the following advisory about the use of Web Mercator map projection: http://earth-info.nima.mil/GandG/wgs84/web_mercator/While Web Mercator is quite useful for web map services by dividing the…
"ICYMI, there's now 30m SRTM data for Africa
http://www.usgs.gov/blogs/features/usgs_top_story/enhanced-elevatio..."
http://www.usgs.gov/blogs/features/usgs_top_story/enhanced-elevatio..."
"This may be slightly off topic, but I was was curious if using a GoPro stereo rig could also be used on your setup for bathymetric mapping. Check out this article:
"Measurement of Micro-bathymetry with a GOPRO Underwater Stereo Camera Pair"…"
"Measurement of Micro-bathymetry with a GOPRO Underwater Stereo Camera Pair"…"
"We are using an IR trigger that has an inconsistent delay, sometimes resulting in missing images. Finding out where the missing images occur is problematic and time consuming since often work with large datasets. For example, to map 1 sq km at 1.5…"
"And I'm still unsure why some of my altitudes are sub-meter. In both of our cases, the message offsets are not working correctly."
"MP has a function to convert PX4 bin to dataflash log files. By the way, it's preferable to use dataflash logs rather than tlogs for geotagging because of latency and possible interruptions in telemetry."
"Here it is. Feel free to add your own comments to this issue if they would help clarify the problem.
https://github.com/diydrones/MissionPlanner/issues/591"
https://github.com/diydrones/MissionPlanner/issues/591"
"You're not alone. It's either a software issue or a documentation problem. I still haven't found the correct offsets. I can post the issue to Github. "
"Last week I was having a similar problem using the data flash log rather than tlog:
http://diydrones.com/forum/topics/pixhawk-cam-message-offsets
However, I haven't been able to fully resolve it due to some missing images (discrepancy between…"
http://diydrones.com/forum/topics/pixhawk-cam-message-offsets
However, I haven't been able to fully resolve it due to some missing images (discrepancy between…"
"OK, I found the answer to my question.
http://plane.ardupilot.com/wiki/common-geotagging-images-with-missi...
But I still think that this information should be updated as well
http://plane.ardupilot.com/wiki/downloading-and-analyzing-data-logs..."
http://plane.ardupilot.com/wiki/common-geotagging-images-with-missi...
But I still think that this information should be updated as well
http://plane.ardupilot.com/wiki/downloading-and-analyzing-data-logs..."
I've been trying to use the Georef tool to add XYZ data to my photos' EXIF metadata. However, when I imported that into Agisoft Photoscan, I was having alignment issues due to misreported altitudes. The Geo Ref tool is reporting a file discrepancy…
"What sort of sensor will you use for measuring depth?"
"Great! I tried it with both alt and elevation fields. Thanks so much for this... it makes a big difference in my workflow."
