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Messages - dpoursanidis

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Python and Java API / Re: import csv image in photoscan
« on: May 19, 2022, 12:46:50 PM »
Dear Paul

You make my day!

Tomorrow or on Monday i will do a proper data collection flight since the weather now is not good to fligh.
You create a script for the workflow?

Thanks a lot


Python and Java API / Re: import csv image in photoscan
« on: May 17, 2022, 12:53:38 PM »
Dear Paulo

The data i provide as tiff files are radiometric files.

The same file as you use in Agisoft is attached as printscrenn from the OPTRIS PIX application as it reads only such files.

The camera is configured through that application and i can have either .tiff or .csv either image data .csv or temperature profile data .csv

I don't have option for RJPEG format and OPTRIS is very unsupportive in any request for such issues.

Thanks for the support

Dimitris Poursanidis

Python and Java API / Re: import csv image in photoscan
« on: May 17, 2022, 10:49:30 AM »
Thanks for the advices. I am aware of that requirements. This set of data come from the suppier of the system.

We are on the process to learn all needed software and safety procedures since Mission Planner is complete a new world for me.

I will be back with a proper set of material for further analysis.

If you want to have a look at the "raw" therma data here they are >

Thank you for your kind support.

Python and Java API / Re: import csv image in photoscan
« on: May 16, 2022, 03:57:21 PM »
Hello dpoursanidis,

regarding your parallel collection with RX100, does that mean that u are capturing both RGB Sony RX100 and Infrared Optris PI640 images on same platform?

If so what is the focal length of your RX100? If it is set at 10.4 mm then the following parameters would result from a capture at 65 m AGL with 80% front and 65% sise overlap for Infraredimagery see attachment...

As you can see the resulting GSD for the 2 sensors is very different (10.5 cm for Infrared Thermal vs 1.5 cm for Sony RGB sensor).  So it would make sense to process the 2 image sets in 2 different chunks and use the georeferenced RGB set to extract CPs to georeference the Thermal set...

Again if you can share a small sample with 2 sets of images (RGB and thermal) then we could have a look at it...

Thanks for that detailed insights and the calculations.

Here ( you can have access to geotagged imagery from both cameras.

The mission planning will be based on the parameters of the Thermal Camera, since we intend to collect data in cities (if and when we will have the permissions to operate) and create a complete 3D thermal cube for the selected areas.

Meanwhile, is the excel file available for reuse?

Python and Java API / Re: import csv image in photoscan
« on: May 16, 2022, 03:54:25 PM »

i would try to set camera  focal to 60° x 45° FOV / f = 10,5 mm  in camera calibration window as well as pixel sixe to 0.017 mm

and see how alignment goes. using tif images...

If you have a small set to share we can look at best practice for alignment.

Hope this can get yu going,

Are these the only parameters we need for the reconstruction of the ortho? The rest of the calibration data how can influence the results?

Python and Java API / Re: import csv image in photoscan
« on: May 13, 2022, 04:51:42 PM »
Even if it is an old post, the information included here is invaluable.

We have a Pi 640 and need to go for photogrammetry analysis.
If shot in Tiff, then chaos appear since data have no metadata and camera calibration parameters are hard to be found since OPTRIS refuse to provide us up to now.
I have a 60 degrees lense on the camera which has a resolution image of 640x480.

Should i go for csv files and follow the above workflow?
In parallel i collect optical data with a Sony RX 100 and use Ardupilot Mission Planner for geotagging.

Any idea is much appreciate since we have stuck in the corner with that system

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