Subset of Tetra Cam ADC Imagery
We recently received a data collection courtesy of David Dvorak using the Tetra Cam ADC Multi-spectral image sensor. DroneMapper processed 189 geo-tagged 3.2 mega pixel images into geo-referenced Orthomosaic, DEM, DSM and Point Clouds with an area of 1.6 km sq. The AGL of the flight was 1000 ft resulting in a 15 cm GSD per pixel. Processing time was about 2 hours for this data set.
Geo-referenced Orthomosaic using Tetra Cam ADC
Accurate DEM construction is still possible using 3.2 mega pixel images:
Comments
the resolution of the tetracam is super low... compared to a modified poweshot camera.. I was seeing one canon s100 modified by maxmax, looks the same as tetracam, but with 4000x3000 pixels
i´m trying to get a mosaic with a set of images from tetracam on the 30-day trial version of agisoft photoscan, still with no sucess. does anyone have any hint on how to get the software to understand the r-g-nir bands? even with gps info, the poit cloud is totally wrong, and the generated mosaic is useless.
Thanks, unfortunately I don't have a good gimbal recommendation. I have seen some recent posts on this site for good looking gimbal designs .. we can work with off NADIR imagery but only to about 20 degrees or so
Hi all:
@Kirill Thanks for the offer! We would have to check with the owner of the data if that is possible. I think Pteryx and pix4d both have raw nir imagery available for testing if you are interested.
@Tim We haven't from this data set yet but may when time permits. We've done a few NDVI / EVI calculations on other data sets (see my blog on this site)
Thanks