Hi
Due to laws and regulations, I am forced to fly in maximum altitude of about 43 Meters, or roughly 140 foot ASL.
With an overlap of 60% sideways, and 75% forward, this gives a GSD of 1.13cm/pixel.
Is there anything I should change, so that my finished product looks more pleasing to the eye?
It must give som issues with the 3D models as well…
Thank you for sharing this thread in the Pix4D Community.
Which app are you using to capture images? Which software are you using for the photogrammetric process?
While you already have a significant amount of overlap, increasing it further can sometimes help with the reconstruction of complex structures and improve the sharpness of the images. However, this will also increase the number of images required and the processing time.
Additionally, the shared orthomosaic looks distorted in some areas, suggesting that the DSM might not be accurate enough.
Additionally, can you please confirm that the blurry features look sharp in the single images?
Thank you for your answer
I am using the standard software that are installed on my DJI Mavic 3 Enterprise drone.
For the processing, I tryed using both Pix4D Mapper and Pix4DCloud.
Processing time is no issue, as I have a computer only for processing dronematerial. How ever it did produce about 1.400 pictures. For more pictures, I wil need to process it in two smaller projects, then merge them together.
The DSM, it is not accurate. Two buildings with almost the same height, has a difference of over 14 meters.
The sharpness of the photos is as good as I would expect it to be.
Thank you for your reply and for sharing the picture.
From it, I can clearly see that these are sharp, but I can also see how high the buildings are. Therefore, if you set an overlap of 60%, this is calculated on the ground. However, high structures will have a much smaller overlap.
Try to look at two consecutive pictures and compare the overlap of the features you can see on building roofs.
I’m not sure how often you travel to the construction site, but if you could do this test:
Capture images of a small area of the site: make sure you have at least 60% overlap on the roof top. Verify this on an area where you have the highest structures.
Process the images using PIX4Dmapper so that you won’t need to use PIX4Dcloud allowance/credits.
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For more pictures, I wil need to process it in two smaller projects, then merge them together.