Hi, we have a problem processing PPK geotagged images in ContextCapture.
On two separate projects we have tried to perform an aerotriangulation just using our accurate geotags only. When this is performed it creates a downwards curve from the centre of the project to the edges. We have corrected this by adding GCPs and running a second aerotriangulation. When the PPK data is run though Pix4d we do not have this problem. We would really like to be able to run PPK tagged photos through contextcapture without GCPs.
Cheers,
>That is caused by camera distortion.
It is not caused by distortion but by inability to calculate the distortion. Strange that other SfM can handle such distortion. This makes CC a bad impression as lot of comparisons between softwares end with conclusion that CC is worse as gives this curved result. As you know no one reads manual before something is broken :doh:
Pix4D has some adjustments which helps in such cases - https://support.pix4d.com/hc/en-us/community/posts/203840603
You could try to run aerotriangulation with tangential distortion enabled
Hi,
I suggest you read acquisition guide under C:\Program Files\Bentley\ContextCapture\doc. you will get answer from page 11. That is caused by camera distortion.
Sony RX1RII has IMX251 sensor with global shutter so it should work just need good overall light so exposure is short and images are not blurred in fast flight.
You will need to re-use calibration if it was nadir only flight. Also for nadir only the altitude will not be correct and need at least one GCP but horizontal accuracy will be great. If you used GCPs then no need to run separate calibration just use the now adjusted calibration in next projects.
Can you post the aerotriangulation report PDF?
Thanks Oto,
We were using a WingtraOne with the Sony RX1RII. Flight speed of the Wingtra is around 35mph.
The job consisted of around 7000 photos, with good overlap and cross flights in some areas. It covered roughly 400ha.