Georeferencing 1 image in terrestrial close range photogrammetry

[Seb_B]

Hello,

How can I georeference 1 image in photoscan using Markers? My image is oriented (by bundle adjustement) but there is no 3d model in this image as the image is oblique. I have a 3D model with a part of the set of images which are perpendicular to the object. Nevertheless, I have Markers in the area of the oblique picture.
Thanks,




 

[Alexey Pasumansky]

Hello Seb_B,

Could you please post a screenshot?

Also please check if the estimated values for the camera position coordinates in the Ground Control pane will be sufficient for your tasks.

[Seb_B]

Hello Alexey,

Actually my question is how can I change my coordinate system (rotation and translation) to have my X axis parallel to the normal of my image of interest (screenshot 4 and 5)) and then use a plane (or surface) positioned to minimizing the distance with markers (10 to 16, screenshot 2) as a 3D model to create a single orthophoto?

I am not sure that I can do all the process with photoscan, but at least I was wondering if I could do the rotation and translation of my coordinates (where and which data do I need to use?) and how I can project my image to a plane imported in photoscan?

My object is a butressed tree.

Thank you

[Seb_B]

I rewrite my request, is it possible to project one image in a plane defined by 3 markers?

[Alexey Pasumansky]

Hello Seb_B,

Regarding your last post, yes, it is possible. You need to use Planar projection type in the Export orthophoto dialog and choose "Markers" as the Projection plane option. Then define two vectors that are parallel to the projection plane and select one of them to be used as vertical or horizontal in the target orthophoto.

[Seb_B]

Thank you Alexey.

I have an other question following the last...

What is the difference between:
1. Making my orthophoto using A Plannar projection with Markers and,

2. changing my coordinate system to have my z axis parallel to the normal of the position of my image and then using Projection plane option top XY Or botom XY in the export orthophoto menu (the 3D model would be a plan crossing the 3 Markers used in the first option)?