A method for generating a 3D image includes driving structured light projector(s) to project a pattern of light on an intraoral 3D surface, and driving camera(s) to capture images, each image including at least a portion of the projected pattern, each one of the camera(s) comprising an array of pixels. A processor compares a series of images captured by each camera and determines which of the portions of the projected pattern can be tracked across the images. The processor constructs a three-dimensional model of the intraoral three-dimensional surface based at least in part on the comparison of the series of images. Other embodiments are also described.

A system and method for providing feedback on a quality of a 3D scan is provided. The system includes a coordinate scanner configured to optically measure and determine a plurality of three-dimensional coordinates to a plurality of locations on at least one surface in the environment, the coordinate scanner being configured to move through the environment while acquiring the plurality of three-dimensional coordinates. A display having a graphical user interface. One or more processors are provided that are configured to determine a quality attribute of a process of measuring the plurality of three-dimensional coordinates based at least in part on the movement of the coordinate scanner in the environment and display a graphical quality indicator on the graphical user interface based at least in part on the quality attribute, the quality indicator is a graphical element having at least one movable element.

Provided is an imaging device for acquiring three-dimensional information of a workpiece surface and a two-dimensional image. An imaging device comprises a visual sensor for acquiring a two-dimensional image after acquiring three-dimensional information of a workpiece surface. A position detection device is attached to the conveyor drive motor of a conveyor that conveys a workpiece. An image processing part calculates the amount of movement of the workpiece from when the three-dimensional information is acquired to when the two-dimensional image is captured on the basis of an output of the position detection device. The image processing part moves the three-dimensional information relative to the two-dimensional image in such a manner as to correspond to the amount of movement of the workpiece in a predetermined coordinate system.

A method of scanning an oral cavity including: acquiring, using an intraoral scanner (IOS) head, without changing a position of the IOS head, a first image of a first region of interest (ROI) and a second image of a second ROI where the first and the second ROIs are of different portions of a dental arch of the oral cavity and do not overlap; reconstructing depth information for the first and the second ROI; and generating a single model of the dental arch by combing the depth information.

Imaging system based on light triangulation for capturing information on three dimensional characteristics of an object by means of one or more cameras. A calibration target object is within respective field of view of said cameras so that the cameras are able to detect light reflected from a surface structure of the calibration target object comprising one or more regular right pyramidal recesses and one or more regular right pyramids, with their respective bases in the same plane and their respective apexes at the same orthogonal distance from that same plane. The base of at least one of said regular right pyramidal recesses shares at least one side with the base of at least one of said regular right pyramids, such that each pair of lateral faces sharing side are located in a common plane.

A three-dimensional (3D) measurement system, a method of measuring 3D coordinates, and a method of generating dense 3D data is provided. The method of measuring 3D coordinates includes using a first 3D measurement device and a second 3D measurement device in a cooperative manner is provided. The method includes acquiring a first set of 3D coordinates with the first 3D measurement device. The first set of 3D coordinates are transferred to the second 3D measurement device. A second set of 3D coordinates is acquired with the second 3D measurement device. The second set of 3D coordinates are registered to the first set of 3D coordinates in real-time while the second 3D measurement device is acquiring the second set of 3D coordinates.

The present disclosure provides an apparatus. The apparatus according to the present disclosure comprises: at least one first light source configured to irradiate illumination light to an object on a reference surface; at least one second light source configured to irradiate pattern light to the object, a plurality of cameras configured to capture one or more illumination images and one or more pattern images; and one or more processors configured to determine a plurality of outlines indicating edges of the object based on two or more images captured in different directions among the one or more illumination images and the one or more pattern images; determine a virtual plane corresponding to an upper surface of the object based on the plurality of outlines; and determine an angle between the virtual plane and the reference plane.

A volume measuring apparatus is disclosed and includes a body having a working part and a holding part extended downward from the bottom of the working part, a processor arranged in the body, a first camera, a second camera, and a barcode capturing unit arranged on a front end of the working part, a first button arranged on one side of the holding part, and a second button arranged on a top of the working part. The first button and the second button are different types of button. By respectively operating the first button and the second button, the processor is controlled to perform a measuring action of the volume of a target box or to perform a decoding action of a target barcode based on the image captured by at least one of the first camera, the second camera, and the barcode capturing unit.

An image processing device includes a setting unit configured to estimate a disparity between a first image and a second image based on a method different from stereo matching and set, based on the disparity thus estimated, a search range for a corresponding point for the stereo matching, a disparity map generating unit configured to search only the search range thus set for a corresponding point of each pixel between the first image and the second image and generate a disparity map, and a disparity map compositing unit configured to composite a plurality of the disparity maps each generated from a corresponding one of a plurality of image pairs.

An array of more than one digital micro-camera, along with the use of patterned illumination and a digital post-processing operation, jointly create a multi-camera patterned illumination (MCPI) microscope. Each micro-camera includes its own unique lens system and detector. The field-over-view of each micro-camera unit at least partially overlaps with the field-of-view of one or more other micro-camera units within the array. The entire field-of-view of a sample of interest is imaged by the entire array of micro-cameras in a single snapshot. In addition, the MCPI system uses patterned optical illumination to improve its effective resolution. The MCPI system captures one or more images as the patterned optical illumination changes its distribution across space and/or angle at the sample. Then, the MCPI system digitally combines the acquired image sequence using a unique post-processing algorithm.