An optical measuring device includes: an emission device configured to emit a scanning light, of which an optical axis parallely moves, to an object; a light receiving element configured to perform photoelectric conversion with respect to the scanning light after passing over the object; a calculation device configured to calculate, from a voltage wave obtained from time change of an electrical signal that is output by the light receiving element, a distance corresponding to a time range from a first edge with respect to a voltage value where the scanning light is not interrupted by the object and a second edge with respect to a voltage value where the scanning light is interrupted by the object, when a part of the scanning light is interrupted by the object for the time range.

Disclosed herein are various embodiments related generally to computer vision, graphics, image scanning, and image processing as well as associated mechanical, electrical and electronic hardware, computer software and systems, and wired and wireless network communications to form at least three-dimensional models or images of objects and environments.

A method of inspecting an object including locating an object on a machine vision apparatus, attaching a light panel to the object to backlight a region of the object, obtaining an image of the region when backlit by the light panel and identifying a geometric property of the object from the image.

In a device for optically measuring the external-thread profile of a pipe, comprising a support for the pipe to be measured and an optical measuring unit including at least one measuring device comprising a light source and a camera arranged in the optical path of the light source for recording a silhouette image of the external-thread profile, wherein the optical measuring unit is, in particular rigidly, mounted on a carrier element pivotally held about three spatial axes, the optical measuring unit comprises at least two measuring devices whose optical paths cross each other.

The invention relates to a processing centre (1) or cutting materials, consisting of a cutting machine (2a) and an adjusting device (5), wherein the adjusting device (5) has a positioning device (8), an illumination device (9,9a) and an image sensor (11), wherein the positioning device (8) holds a tool unit (10) to be illuminated by the illumination device (9,9a) in front of the image sensor (11) in such a way that the image sensor (11) is partially shaded by tie tool unit (10), wherein the image sensor (11) has a greater maximum extension in at least one spatial coordinates direction than the tool unit (10) in the same spatial coordinates direction, and wherein the outline contour of the tool unit (10) is determined using the value for the extension of the shaded region.

Methods and systems for capturing motion and/or determining the shapes and positions of one or more objects in 3D space utilize cross-sections thereof. In various embodiments, images of the cross-sections are captured using a camera based on reflections therefrom or shadows cast thereby.

A tubular measuring system having a sensor at a predetermined position with respect to a datum and a processing device comprising a processor and a memory storing computer program code in signal communication with the sensor. The sensor generates a signal indicative of a feature of a tubular, and the processing device receives and processes the signal to determine position of the feature of the tubular with respect to the datum.

A contour recognition device includes: a projecting unit which projects pattern light; a light quantity adjustment unit which adjusts a light quantity of the pattern light; two photographing units which capture, from different viewpoints, the target and the placement surface; a distance calculation unit which calculates a distance at every two-dimensional position; an image generation unit which generates a distance image which gradient expresses a distance from a maximum distance until a minimum distance at every two-dimensional position; and a contour extraction unit which extracts a contour of the target, in which the light quantity adjustment unit adjusts the light quantity so that the distance of at least the contour of the target cannot be calculated, and the distance of the placement surface can be calculated, and the image generation unit generates an image so that a maximum distance becomes a distance greater than the distance of the placement surface.

A method for surface reconstruction may include illuminating at least one object simultaneously by light emitted by a plurality of luminaires spaced apart from another. The method may further include recording a photographic sequence comprising a plurality of individual images of the object(s). The method may further include reconstructing at least one visible object surface of the object by photometric stereo analysis.

A method for tool measurement using a non-contact tool setting apparatus mounted to a machine tool, which includes a transmitter for emitting a light beam having a beam width and a receiver for receiving the light beam. The receiver generates a beam intensity signal describing the intensity of received light. The method is for measuring a tool having a nominal tool diameter less than the beam width so fully inserting the tool feature into the light beam would only partially occlude the beam. The method includes moving the tool through the beam thereby causing a change in the intensity signal and generating a trigger signal when the intensity signal crosses a trigger threshold. The tool size is derived using the trigger signal generated. Also, a step of applying a tool length correction that accounts for the nominal tool diameter of the tool being less than the beam width.