I can see that there is a way for PhotogrammetySession to accept object masks. I ensured isObjectMaskingEnabled was set to true, and then I put black-and-white images suffixed with _mask.TIF in the input directory, but they seem to have no effect vs. just not having them at all. I noticed the depth map is rotated 90 degrees, so I tried doing that to the mask, but it didn't make a difference either way. Example of how I'm formatting it: https://drive.google.com/file/d/1-BZCmncAzHnLEGLTKC2W99tjhTIMvc6Z/view?usp=sharing I also noticed there are functions within PhotogrammetrySession that allow input of a bounding box. For example, I found this signature under public struct Geometry: public init(orientedBounds: OrientedBoundingBox, transform: Transform = Transform.identity) /// Creates an instance with an optional bounding box and transform. /// /// - Parameters: /// /// - bounds: An optional bounding box to specify the size of the generated 3D model. /// If you don’t pass a value, the initializer sets the bounding box to .empty, which tells /// RealityKit to calculate the object’s size. But I'm not exactly sure what coordinate space this is using. Is it relative to the pose of the first image or something?