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4 votes
Accepted

Wrong parameters when georeferencing single drone images

My experience is with a Mavic Mini, which does not have published lens distortion specs and has only consumer-grade GPS, not RTK correction. With that caveat in mind, I've found you just need to ...
Houska's user avatar
  • 8,066
3 votes
Accepted

Is the thermic radiation of humans visible in common UAV NIR cameras?

Human beings do not emit near infrared radiation. At the temperature of 300 K objects emit far infrared and the peak radiation is then at about 10 micrometers (μm). Glass lenses are completely opaque ...
user30184's user avatar
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3 votes

Problems importing DJI Phantom images into QGIS

The raster images from your multispectral camera are not georeferenced images they are geotagged images. The points created from Importphotos are going to be the point locations of the GNSS enabled ...
GBG's user avatar
  • 9,959
3 votes

Problems importing DJI Phantom images into QGIS

"Coast of Africa" sounds like Null Island. This is very likely a CRS-Issue. However, your point's are at the right location so probably it worked just right. And the import-photo tool ...
Vincé's user avatar
  • 1,414
2 votes

Creating maps in QGIS from Drone Videos

Creating maps in QGIS from drone videos involves several steps, including extracting still images from the video, processing these images into a georeferenced orthomosaic, and then importing this ...
MUHAMMAD TAHIR's user avatar
2 votes
Accepted

Which band is which in an RGB image

Usually its in order - R, G, B, and then any fourth band is a transparency band (often referred to as A). But without documentation or a file to look at, impossible to be certain. Check the ...
Spacedman's user avatar
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1 vote

Wrong parameters when georeferencing single drone images

I'm working on a similar problem trying to get projected coordinates, X and Y of objects from their pixel coordinates in the UAV images. This paper https://doi.org/10.3390/s22020604 outlines the ...
sediba's user avatar
  • 11
1 vote

Batch increase drone imagery altitude by editing EXIF GPS information

For someone who may need to perform this function in the future. The easiest way using exiftool: exiftool -EXIF:GPSAltitude+=-15 FileOrDir reference: https://exiftool.org/forum/index.php?topic=7602.0
Mike's user avatar
  • 11
1 vote

Creating maps in QGIS from Drone Videos

You can (as described in the other answers), but it's rarely optimal. A video stream has simultaneously too much information (too many frames with a little bit of overlap of what you do see) as well ...
Houska's user avatar
  • 8,066
1 vote

Creating maps in QGIS from Drone Videos

Adding to what Muhammad Tahir wrote here are the steps to extract GNSS data from a DJI drone video. As he states, the resulting images do not include GNSS positions, azimuths, pitch, roll, and yaw ...
GBG's user avatar
  • 9,959

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