According to an embodiment of the present invention, a method of measuring a shape based on reflected light from a surface of an object irradiated with light from a measurement head, includes: acquiring a first measurement result by setting a measurement condition suitable for the measurement of a first region of the object and by measuring a first scanning range of the surface with a first scanning pitch; determining a second region of the surface except the first region from the first measurement result; and acquiring a second measurement result by setting a measurement condition suitable for the measurement of the second region and by measuring a second scanning range of the surface narrower than the first scanning range with a second scanning pitch finer than the first scanning pitch.

An information processing apparatus includes an acquisition unit configured to acquire a plurality of captured images of a traveling surface where a movable apparatus travels, each of the captured images including distance information in a depth direction transverse to the traveling surface, the plurality of captured images having been captured using a plurality of stereo image capture devices, and an image processing unit configured to stitch together the plurality of images of the traveling surface captured by the plurality of stereo image capture devices by identifying partially overlapping portions of one or more pairs of the images captured by respective stereo image capture devices which are adjacent in a width direction of the traveling surface.

An information processing apparatus includes: a determination unit configured to determine a plurality of measurement positions and/or orientations from which a 3D measurement sensor makes three-dimensional measurements; a controller configured to successively move the 3D measurement sensor to the plurality of measurement positions and/or orientations; a measurement unit configured to generate a plurality of 3D measurement data sets through three-dimensional measurement using the 3D measurement sensor at each of the plurality of measurement positions and/or orientations; and a data integration unit configured to integrate the plurality of 3D measurement data sets.

The invention relates to a method for analysing defects in transformer laminations using an inspection system, and to an inspection system (24), wherein the inspection system comprises a detection unit (26), a conveyance device (27) and a processing device, wherein the detection unit includes an optical detecting device (31), wherein the conveyance device is used to continuously transport a plurality of transformer laminations (25) relative to the detecting device, wherein the detecting device is arranged transversely, preferably orthogonally, to a direction of movement of a transformer lamination, wherein a velocity of movement of a transformer lamination relative to the detecting device is measured via a measurement device (40) of the detection unit, wherein an image of a contour of a transformer lamination is captured with the detecting device, wherein images of a transformer lamination are assembled into a combined image of the transformer lamination via the processing device while considering the velocity of movement of the transformer lamination, wherein a shape of the transformer lamination is determined on the basis of the combined image via the processing device.

An image generation device generates a plurality of reference in-focus images of an object placed on a surface of an image sensor by using a plurality of images captured by the image sensor using sensor pixels when the object is irradiated with light by a plurality of illuminators. Each of the reference in-focus images is an in-focus image corresponding to one of a plurality of virtual reference focal planes that are located between the image sensor and the plurality of illuminators. The plurality of reference focal planes pass through the object and are spaced apart from one another. The image generation device generates a three-dimensional image of the object by using the reference in-focus images and displays the three-dimensional image on a display screen.

A measurement and reconstruction method for a turbine blade strain field of with integrates an imaging technology and an infrared photoelectric measurement technology. The imaging technology is mainly responsible for the measurement of the strain field on a target blade surface, so as to use a digital image processing technology to obtain blade strain field data. The infrared photoelectric measurement technology is mainly aimed at the strain at blade edges, which uses temperature difference between the blade edges and blade gaps to perform strain measurement. Measurement results of the two modes are finally converted into blade strain parameters, thereby reconstructing the target blade strain field based on host computer software.

A strain measurement method includes disposing a 3D camera module at a first measurement position; using the 3D camera module to acquire a first 3D image of a to-be-measured object at a first to-be-measured position; acquiring a second 3D image of the to-be-measured object at the first to-be-measured position; and splicing the first and second 3D images to obtain an initial 3D image. The method still includes: moving the 3D camera module from the first measurement position to a second measurement position; using the 3D camera module to acquire a third 3D image of the to-be-measured object at a second to-be-measured position; acquiring a fourth 3D image of the to-be-measured object at the second to-be-measured position; and splicing the third and fourth 3D images to obtain a deformed 3D image. The method further includes comparing the initial 3D image and the deformed 3D image to output 3D deformation information.

In method for replaying a scanning process according to the present invention, position information and rotation information of a scanner are acquired while scanning a scan target is a scanning step, and the distance relationship and angle relationship with the scan target can be calculated according to the position information and rotation information of the scanner. The acquired information and relationship values can be linked with a scan time and stored, and scanning data, along with the acquired information, can be sequentially displayed over time in a display step. According to the method for replaying a scanning process, the process of scanning performed by a user can be examined in chronological order, and the examination process can be quickly performed by controlling replay speed and selecting scan time. Accordingly, there are advantages in that the user can perform additional scanning of inadequately scanned portions, and the results of the scan can be used as material for deriving an optimal path for scanning when performing a scan on another patient having a similar oral cavity shape.

A handheld three-dimensional (3D) measuring system operates in a target mode and a geometry mode. In the target mode, a target-mode projector projects a first line of light onto an object, and a first illuminator sends light to markers on or near the object. A first camera captures an image of the first line of light and the illuminated markers. In the geometry mode, a geometry-mode projector projects onto the object a first multiplicity of lines, which are captured by the first camera and a second camera. One or more processors determines 3D coordinates in the target mode and the geometry mode.

Disclosed is a stitching-measurement device adapted for performing stitching-measurement on a surface of a concave spherical lens, including: an interferometer, a reference lens, a first plane mirror, a second plane mirror, a first adjustment mechanism, a second adjustment mechanism, a concave spherical object to be measured, a motion table and a control mechanism, the first plane mirror being mounted on the first adjustment mechanism configured to change a position of the first plane mirror; the second plane mirror being mounted on the second adjustment mechanism configured to change a position of the second plane mirror; the concave spherical object to be measured being placed on the motion table configured to change a position of the concave spherical object to be measured; the control mechanism communicating with the interferometer, the first adjustment mechanism, the second adjustment mechanism, and the motion table for issuing control signals, wherein by the first adjustment mechanism and the second adjustment mechanism, an included angle between the first plane mirror and the second plane mirror is adjusted in such a way that light beam incident on the concave spherical object to be measured is inclined by a first angle relative to light beam emitted from the reference lens, thereby avoiding an operation of inclining the concave spherical object to be measured during the stitching-measurement.