We are all in this together, so no worries about the questions. Maps Made Easy ‘Map Pilot’ software and hardware only support the Sony A7R camera on the Zenmuse gimbal. I fully understand your concerns with ground control and we use GCP’s as well. We are business partners with engineering and survey company QK, Inc. here in Central California. They lay the GCP’s and then we fly it. We collaborate on the post processing to ensure that they can legally sign-off on the accuracy of the work.
Since the DJI software cannot control the shutter, that is why Maps Made Easy created their ‘Ninja’ processor. It fires the shutter based on actual flight speed. Post flight we upload the images and the corresponding CSV file(s) where Maps Made Easy will ‘tag’ the images with the XYZ info from the CSV record.
To answer your question on the CSV file; obvious values of lat, long, altitude, speed, and much more are very easy to identify. There are 60 columns of data, much of which is also regarding status of other systems of the M600.
The ‘tagged’ images are directly processed by Pix4D. (Just for the record, we also fly an Inspire-1 and an X3 cam where we don’t have to ‘tag’ the images at all. We also see some Y value issues there too.) We have been a little busy lately, but we are organizing our findings (especially regarding the Y values) to submit to the CTO for Maps Made Easy. We hope to improve the accuracy working alongside him and his staff. Like you say, by using the GCP’s we can align the imagery from the M600 and have been very successful on several projects.
Regarding flight speed, since the images are being captured from a moving object, flying slower rather than faster will create a clearer image and thus a clearer point cloud for 3D modeling.
The problem with DJI is that they don’t offer a good HiRes camera option for the M600 other than the X5 which only supports 16MP, but most flight software still doesn’t support the M600; even with that cam.
Please stay in touch as you make progress.
Regards, Larry Pruitt, Sierra Aeriform