auto-boundary

Automatically set a boundary using camera shot locations to limit the area of the reconstruction. This can help remove far away background artifacts (sky, background landscapes, etc.). See also –boundary. Default: False

Parameter Type:

Boolean

Parameter Domain:

True: --auto-boundary

False: null

Parameter Default:

False: null

Resource	Impact
CPU	●○○ \| Low
GPU	○○○ \| None
HDD	○○○ \| None
RAM	●○○ \| Low
Time	●○○ \| Low

What Is Auto-Boundary?

--auto-boundary is a process that seeks to limit the boundaries of the reconstruction based upon a K-Means filtered Convex Hull buffered by 20x the mean GSD of the dataset.

When Is Auto-Boundary Helpful?

--auto-boundary is appropriate to use on any dataset where one might possibly consider limiting the area of reconstruction due to the presence of sky or far-away background that they would not normally consider part of the desired reconstruction.

--auto-boundary does not have a meaningful impact on nadir (or near-nadir) imagery without sky/background, making it superfluous, but safe, to include.

In other words, if you would consider masking the image, --auto-boundary is likely a good choice.

Why would one use auto-boundary?

Auto-Boundary is most helpful in preventing the reconstruction area from growing needlessly large when things like sky, clouds, or far-away features like treelines get included in the reconstruction.

By preventing the boundaries of the reconstruction from growing needlessly large, Out-Of-Memory errors become far less likely, and one will likely see a decrease in processing time due to the smaller area being reconstructed.