Abstract: Disclosed herein are methods, apparatus, and computer program code for determining a correcting mapping, comprising: locating a test object having a known linear dimension at a plurality of positions within a volume; at each of the plurality of positions, capturing a three-dimensional scan of the test object using a three-dimensional imaging device; and determining a difference between the known linear dimension and the linear dimension as obtained from the captured scan; and determining a correction mapping for the volume based on the determined differences, the correction mapping indicating variation from an expected location of the location as captured by the imaging device.

Abstract: Examples of methods for fiducial location are described herein. In some examples, a method may include estimating a first location of an unidentified fiducial based on image coordinates and grid coordinates of a set of contiguous fiducials. In some examples, the method may include determining that a candidate fiducial is a fiducial based on comparing the first location with a second location of the candidate fiducial.

Abstract: A method comprising scanning a test artefact at plurality of locations relative to the scanner to create test data. Determining a measured dimension of the test artefact in each of the plurality of locations based on the test data. Determining an error between the measured dimension and an actual dimension of the test artefact in each of the plurality of locations to create error data. Determining from the error data a preferred region relative to the scanner for scanning and adjusting a position of the scanner relative to an object to be scanned so the object is within the preferred region.

Abstract: A dead-beat escapement break away assembly which consists of, a pallet engagement collet with at least one magnet attached thereto and a pallet alignment feature attached thereto; a pendulum crutch attachment mechanically coupled to the pallet engagement collet; a pallet which is adapted to be magnetically coupled to the pallet engagement collet so as to mechanically engage the pendulum crutch attachment to the pallet, thereby enabling the pallet to break away from the pallet engagement collet when sufficient force is applied to the pallet to overcome the magnetic force of the magnet.

Abstract: A hollow cathode apparatus includes an outer tubular dielectric barrier circumferentially surrounding an outer tubular surface of the cathode tube, the outer tubular dielectric barrier being composed of a barrier material which is electrically non-conductive. Also disclosed is a system comprising the hollow cathode apparatus, an anode which is spaced from the output end of the tubular cathode, and electrical circuitry connected between the cathode tube and the anode for connection to a source of electrical power for providing an electrical potential between the cathode and anode to cause an electric current to pass from the emitter into the input gas to form a plasma which is then output through the output end of the cathode tube to form a plasma plume.

Abstract: Examples of methods for fiducial pattern detection are described herein. In some examples, a method may include detecting fiducial pattern subsets in image subsets of an image of an object. In some examples, the method may also include selecting a first image subset that includes a largest first fiducial pattern subset. In some examples, the method may further include extending the first fiducial pattern subset from the first image subset to a neighboring second image subset.

Abstract: Disclosed herein are methods, apparatus, and computer program code for object manufacturing (e.g. 3D printing), to align an object scan obtained from a manufactured object manufactured according to an object data file with an object representation obtained from the object data file. The manufactured object has been manufactured on a manufacturing bed of a 3D manufacturing apparatus according to the object data file. The manufactured object comprises a manufacturing parameter identifier in a region of interest defined in the object data file, the manufacturing parameter identifier indicating a manufacturing parameter of the manufactured object. The manufacturing parameter identifier in the region of interest of the aligned object scan may be computationally read.

Abstract: A method is described in which a three-dimensional polygon mesh model of an object is analysed to identify a sub-mesh representing a predefined geometric shape. The polygon mesh model is aligned with three-dimensional scan data of an instance of the object. Based on the alignment, the position of the predefined geometric shape is identified in the three-dimensional scan data. Using the position of the predefined geometric shape, metrology data for the instance of the object is derived from the three-dimensional scan data.

Abstract: A system comprising a scanner to scan an object and a controller. The controller can cause an object to be moved to a plurality of locations to be scanned by the scanner. At each location the controller can cause the scanner to scan the object to create scan data and can cause a reference device to create reference data relating to the object. The scan data can be processed to create scan position data indicative of a measured scan position of the object and can cause the reference data to be processed to create reference position data indicative of a measured reference position of the object. The controller can also cause the generation of error data indicative of a position error in the scan data at each of the plurality of locations based on the scan position data and the reference position data.

Abstract: A vented grooved foam liner cap system for attachment to a container, including a vented foam liner having a grooved distal side that can be actuated from an open state to a sealed state within a cap of a container by a sealing mechanism. A method of equilibrating pressure and sealing a container, by venting contents of a container through the vented grooved foam liner cap system attached to the container, and after the contents have cooled to a desired temperature, stopping venting, thereby providing pressure equilibration to the container, and sealing the container by activating a sealing mechanism in the vented grooved foam liner cap system.

Abstract: Disclosed are a 3D scanner, an additive manufacturing system and an apparatus and method for identifying features of a 3D object manufactured in such a system. An apparatus comprises an optical projection assembly comprising a light source and an optical grating, for illuminating an object with first and second light patterns having different spatial frequencies, wherein the optical projection assembly provides a first light pattern in a first configuration of the optical projection assembly and provides a second light pattern in a second configuration of the optical projection assembly. An image capturing apparatus is used to capture images corresponding to reflections of the first and second light patterns from the illuminated object, and a processing unit is used to identify, from the captured reflections of the first and second light patterns, the effects of distortions in the reflected light patterns corresponding to features of the illuminated object.

Abstract: A dead-beat escapement break away assembly which consists of, a pallet engagement collet with at least one magnet attached thereto and a pallet alignment feature attached thereto; a pendulum crutch attachment mechanically coupled to the pallet engagement collet; a pallet which is adapted to be magnetically coupled to the pallet engagement collet so as to mechanically engage the pendulum crutch attachment to the pallet, thereby enabling the pallet to break away from the pallet engagement collet when sufficient force is applied to the pallet to overcome the magnetic force of the magnet.

Abstract: A microwave appliance, as provided herein, may include an outer casing, an inner liner, a door, and an air handler. The outer casing may define an air inlet above a cooktop appliance. The outer casing may extend in a lateral direction between a first side end and a second side end. The inner casing may define a cooking chamber. The door may include a peripheral frame and a front window bounded by the peripheral frame. The peripheral frame may define an air outlet downstream from the air inlet and below the front window along the vertical direction. The air handler may be mounted within the outer casing in fluid communication between the air inlet and the air outlet to motivate an airflow therethrough. The air outlet may define an airflow curtain path extending outward from the outer casing in front of the door.

Abstract: An ice making assembly includes a central hub rotatably mounted within a chilled chamber. A mold assembly is attached to the central hub and includes an ice mold that is pivotally coupled to a yoke and defines a mold cavity for receiving water. A drive mechanism rotates the central hub by accelerating the central hub until the rotation speed reaches a target speed and periodically reducing the rotation speed of the central hub to a reduced speed before accelerating back to the target speed until an ice billet is formed.

Abstract: Examples of the present disclosure relate to a method of performing a three-dimensional registration procedure to align two or more three-dimensional surfaces.

Abstract: A hollow cathode apparatus includes an outer tubular dielectric barrier circumferentially surrounding an outer tubular surface of the cathode tube, the outer tubular dielectric barrier being composed of a barrier material which is electrically non-conductive. Also disclosed is a system comprising the hollow cathode apparatus, an anode which is spaced from the output end of the tubular cathode, and electrical circuitry connected between the cathode tube and the anode for connection to a source of electrical power for providing an electrical potential between the cathode and anode to cause an electric current to pass from the emitter into the input gas to form a plasma which is then output through the output end of the cathode tube to form a plasma plume.

Abstract: Cooking exhaust systems for use with a cooktop appliance are provided herein. An exhaust system may include a casing, an image monitor, and an air handler. The casing may define an air inlet and an air outlet above the cooktop appliance. The image monitor may be supported on the casing. The air handler may be mounted within the casing in fluid communication between the air inlet and the air outlet to motivate an airflow therethrough. The air outlet may define an airflow curtain path extending outward from the casing in front of the image monitor.