Hi RC Folk,
I am coming from Metashape pro and currently in RC to create Orthomosaics from a data heavy drone flight (1241 x 61mp images).
I find that if I adjust the ortho pixel size like I would in Metashape the scale of the orthomosaic generated reduces. It is still georeferenced however it is smaller in size than it is in reality.
Metashape gives the option to reduce the resolution on export however in RC the only way I can find to reduce the resolution and file size is on generation of the ortho with the results above.
I would appreciate any help as a 24gb file is just too big and whilst I can take it into QGIS that just seems unnecessary.
Hi @midlifenomad73
in RealityCapture you can set the width/height of the ortho or ortho pixel size. With/height is in pixels, ortho pixel size is in meters. This shouldn’t affect the real size of the ortho and it should be georeferenced and scaled properly. Also, it depends which coordinate system are you using for ortho creation. What settings are you using for ortho creation?
If it is such big ortho, you can try to create like mosaic of orthos by changing the reconstruction region accordingly.
Thank you for the reply @OndrejTrhan
Your comment is exactly what I expect and the ortho geolocates precisely however around the edges it is proportionally smaller by the size i reduce it. eg. if i reduce it by 50% then there is 25% on each side less than there should be!
Attached are the settings before and after I set the pixel size to my preferred size. I am sure it is something simple I am missing.
Hi,
I am not sure what do you mean by this: around the edges it is proportionally smaller by the size i reduce it. eg. if i reduce it by 50% then there is 25% on each side less than there should be.
Do you mean the resulted size of the ortho? It is right as it is.
For your example:
153 652x0.0111 = 1 705.54 m
56 853x0.03 = 1 705.59 m
The ortho size is basically the same in real dimension.
Or do you mean something else?
