--auto-boundary argument description

This establishes a general overview of the --auto-boundary option. Further profiling and in-depth comparisons will follow in the future.

source/arguments_edit/auto-boundary.rst

@@ -1 +1,57 @@
+| 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 superflous, 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.
+
+Example Images
+--------------
+
+True: ``--auto-boundary``
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+.. figure:: https://user-images.githubusercontent.com/19295950/140864618-2a0c95f2-669e-45dc-b5c5-df82a555e4e5.png
+  :alt: WebODM displaying the reconstruction extent of a terrestrial orbit survey of a Northern Catalpa tree.
+
+  The WebODM 3D View shows the full extent of the reconstruction, bounded by the ``--auto-boundary`` option.
+
+False: ``null``
+^^^^^^^^^^^^^^^
+.. figure:: https://user-images.githubusercontent.com/19295950/140864753-db3695c5-3ba2-48fb-a644-3e591913de72.png
+  :alt: WebODM displaying the reconstruction extent of a terrestrial orbit survey of a Northern Catalpa tree.
+
+  The WebODM 3D View shows the full extent of the recosntruction. Compared to the ``--auto-boundary`` reconstruction above, one can see that the full reconstruction area is much larger (and therefore more visually sparse).