Some rotation in my model..?

[hanparker]

I've spent quite a lot of time getting to grips with Agisoft and have been making some good models. I'm using data from a road based survey. I am supplying the model with x,y,z and yaw pitch and roll. I've also supplied it with camera calibration and told it to fix calibration. I don't use the "optimise alignment" process as I don't want to to change any alignment and I I set tie points to 10,000.

I'm reasonably happy that my input values are correct - when I use these to make a model using alternative software (e.g. a trial license of Acute3d), then the resultant model is perfectly aligned with the LiDAR data.

However, the Agisoft model seems to be suffering some rotation - on one side of the road the mesh is about 20cm higher that the LiDAR data, and on the other side of the road, it's 20cm lower.

I tried using different Yaw, Pitch Roll values as a test and the resultant model was the exactly the same. Does it actually use Yaw Pitch Roll?

[Alexey Pasumansky]

Hello hanparker,

PhotoScan doesn't utilize yaw, pitch, roll during processing, so if you have only single line of photographs, the georeferencing would not be stable due to the rotational degree of freedom around the camera movement direction.

[hanparker]

Ah right. OK thank you.

[hanparker]

Is that your long term plan or will you introduce using the yaw pitch roll?