Abstract:
According to an embodiment, a method for 3D scanning at least a part of a surface of an object is disclosed. The method includes recording, using an optical scanner comprising at least one camera, one or more test 2D images of the at least a part of the surface of the object; automatically identifying a first segment of a first level of interest within the test 2D images, the first segment imaging a region of interest on the at least a part of the surface of the object; identifying a first 3D volume comprising the region of interest of the at least a part of the surface of the object; selecting a first input defining a first resolution and/or a first coverage; and 3D scanning the at least a part of the surface of the object within the first 3D volume using the first input.
Abstract:
Disclosed herein is a method for generating a digital 3D representation of at least a part of an intraoral cavity, the method comprising: - recording a plurality of views containing surface data representing at least the geometry of surface points of the part of the intraoral cavity using an intraoral scanner; - determining a weight for each surface point at least partly based on scores that are measures of belief of that surface point representing a particular type of surface; - executing a stitching algorithm that performs weighted stitching of the surface points in said plurality of views to generate the digital 3D representation based on the determined weights; wherein the scores for the surface points are found by at least one score- finding algorithm that takes as input at least the geometry part of the surface data for that surface point and surface data for points in a neighbourhood of that surface point.
Abstract:
Disclosed is 3D scanning using a 3D scanner configured for detecting when the scanned object is at rest in the scan volume of the 3D scanner.
Abstract:
Disclosed is a method and system of evaluating a dental preparation surface, comprising obtaining a digital oral situation and/or a portion thereof comprising a preparation surface, evaluating an attainable thickness based on the preparation surface and surroundings and comparing the attainable thickness to minimum thickness.
Abstract:
Disclosed is an optical coherence tomography scanner and a method for recording sub-surface scans of an object, wherein a position encoder is arranged in the path of the probing beam of an interferometric system. The encoder pattern is detected in a sequence of A scans at generated for different probing beam positions on the scanned object, the probing beam position and/or inclination for at least one A scan of said sequence of A scans is deducing based on the detected encoder pattern, and the sub-surface scan of the object is generated based on the sequence of A scans taking into account the deduced probing beam position and/or inclination.
Abstract:
Disclosed is a structured light 3D scanner based on the principle of triangulation with a light source for generating a light pattern, two cameras with two-dimensional sensors recording the reflection of the light pattern from a target object, and one axis moving the cameras. Wherein the cameras are arranged with at least partly overlapping fields of view and where the sensors in the cameras are read out partially and concurrently during at least some period of the scanning process, thus providing partial images and where the partial images are merged prior to performing the triangulation calculations.
Abstract:
Disclosed is a 3D scanner for recording topographic characteristics of a surface of at least part of a body orifice, where the 3D scanner comprises: - a main body comprising a mounting portion; - a tip which can be mounted onto and un-mounted from said mounting portion, where said tip is configured for being brought into proximity of said body orifice surface when recording said topographic characteristics such that at least one optical element of the tip is at least partly exposed to the environment in the body orifice during said recording; and - a heater system for heating said optical element, said heater system comprising a source of electromagnetic energy and a receptive element configured for receiving the electromagnetic energy and converting it into heat, where the generated heat is provided by way of thermal conduction directly to said optical element or indirectly through a heat conducting element; where the tip can be sterilized in a steam autoclave when un-mounted from the main body of the 3D scanner such that it subsequently can be reused.
Abstract:
Disclosed is an integrated 3D scanner for scanning a surface of an object, said integrated 3D scanner comprising: - a scanning device capable of operating in a first configuration and in a second configuration, where • in said first configuration the scanning device is capable of acquiring a first data set relating to the surface of the object; and · in said second configuration the scanning device is capable of acquiring a second data set relating to the surface of the object; - a data processing unit configured for combining one or more first data sets and one or more second data sets to provide a combined data set; where the first and second configurations of the scanning device are such that the second data set represents data with a higher spatial resolution than the first data set. The two configurations may be realized by two separate scanners. The scanning device may scan at different focal planes in the different configurations. The switching between the two configurations may be automatically performed depending on the distance of the scanner from the object.
Abstract:
Disclosed is a method and a scanner system for scanning interior surfaces, where the method comprises: - providing a probe shaped scanner having an axis, where the probe shaped scanner comprises: • at least one light source configured to create and project structured light, and • at least one camera configured to record 2D images; - entering said probe shaped scanner into a cavity of an object, where said cavity is bounded by an interior surface of the object; - creating and projecting structured light from said light source of the probe producing a pattern on the interior surface of the object; - recording a series of 2D images of the reflection of the pattern from the interior surface using said camera; - combining said series of 2D images to obtain 3D real world coordinates of the interior surface; and - providing data and processing said data such that surface information for areas of the surface, where image scanning is not complete, is created. The scanner system may comprise a probe shaped scanner, a data conversion device and a data processing device, optionally all integrated in one device. (fig.15 should be published)
Abstract:
Disclosed is a method for planning, visualizing, and/or optimizing dental restoration on at least a part of the pre-prepared teeth of a patient, wherein said method comprises the steps of : - providing at least one 3D digital model of at least a part of the pre-prepared teeth; - designing at least one dental restoration CAD model based on the 3D digital model of at least a part of the pre-prepared teeth; - providing at least one 3D digital model of at least a part of the prepared teeth, where the prepared teeth are provided by preparing the pre-prepared teeth by dental restorative work, at least partly based on the dental restoration CAD model; and - aligning the 3D models of the pre-prepared and the prepared teeth.