Abstract: According to some aspects, a container is provided for use in an additive fabrication device configured to fabricate parts by curing a liquid photopolymer to form layers of cured photopolymer. The container may comprise a laminated multi-material layer having an elastic first layer that aids in separation of cured photopolymer from the container in addition to a barrier layer on an upper surface that protects the first layer from exposure to substances in the liquid photopolymer that may not be compatible with the material of the first layer.

Abstract: According to some aspects, techniques for reducing time-dependent fabrication artifacts in additive fabrication are provided. By selectively activating and deactivating an element of an additive fabrication device that forms solid material, adjacent regions of material may be formed sequentially, thereby reducing time-dependent fabrication artifacts at the cost of increasing the time taken to fabricate an object. In some embodiments, selective activation and deactivation of an element of an additive fabrication device that forms solid material may be performed to a subset of an object being fabricated based on an assessment of which portions of an object will be visible upon fabrication.

Abstract: In a system or method where three-dimensional data is acquired as a sequence of frames of data along a camera path, disparate sequences are related to one another through a number of geometric stitches obtained by direct registration of three-dimensional data between frames in the disparate sequences. These geometric stitches are then used in addition to or in place of other camera path relationships to form a single virtual stitch graph for the combined model, upon which an integrated global path optimization can be performed.

Abstract: Disclosed herein are various techniques for improving global path optimization in a system that uses camera path for three-dimensional reconstruction. A subset of frames of data for the global path, the key frames, may be used to reduce the computational complexity of the optimization, while preserving full three-dimensional detail in the optimized model by relating other measurements to the optimized key frame path.

Abstract: In a system or method where three-dimensional data is acquired as a sequence of frames of data along a camera path, disparate sequences are related to one another through a number of geometric stitches obtained by direct registration of three-dimensional data between frames in the disparate sequences. These geometric stitches are then used in addition to or in place of other camera path relationships to form a single virtual stitch graph for the combined model, upon which an integrated global path optimization can be performed.

Abstract: Disclosed herein are various techniques for improving global path optimization in a system that uses camera path for three-dimensional reconstruction. A subset of frames of data for the global path, the key frames, may be used to reduce the computational complexity of the optimization, while preserving full three-dimensional detail in the optimized model by relating other measurements to the optimized key frame path.