Abstract: A measurement system using heat compensation profiles for compensating inaccuracies caused by heat distortion is disclosed. Measurement of objects with different heat distribution involves use of heat compensation profiles with corresponding heat distribution. The heat compensation profile comprises a set of compensation coefficients that represent the deviation of the object having a heat distribution according to the heat compensation profile and the cooled down object. When the compensation coefficients are applied to the measured object the resulting measures correspond with the measurement results of the object after the object has been cooled.

Abstract: An inspection apparatus may include: a structured-light source configured to sequentially radiate a plurality of structured lights having one phase range; a lens configured to adjust, for each of the plurality of structured lights, optical paths of light beams corresponding to phases of the phase range such that a light beam corresponding to one phase of the phase range arrives at each point of a partial region on an object; an image sensor configured to capture a plurality of reflected lights generated by the structured lights being reflected from the partial region; and a processor configured to acquire a light quantity value of the reflected lights; and derive an angle of the surface by deriving phase values of the reflected lights based on the light quantity value for the reflected lights.

Abstract: In a computer-implemented method and system for capturing the condition of a structure, the structure is scanned with an unmanned aerial vehicle (UAV). Data collected by the UAV corresponding to points on a surface of a structure is received and a 3D point cloud is generated for the structure, where the 3D point cloud is generated based at least in part on the received UAV data. A 3D model of the surface of the structure is reconstructed using the 3D point cloud.

Abstract: A 3D track assessment apparatus and method for identifying and assessing features of a railway track bed based on 3D elevation data gathered from the railway track bed.

Abstract: The present disclosure proposes an inspection apparatus. The inspection apparatus may include: a structured-light source configured to sequentially radiate a plurality of structured lights having one phase range; a lens configured to adjust, for each of the plurality of structured lights, optical paths of light beams corresponding to phases of the phase range such that a light beam corresponding to one phase of the phase range arrives at each point of a partial region on an object; an image sensor configured to capture a plurality of reflected lights generated by the structured lights being reflected from the partial region; and a processor configured to acquire a light quantity value of the reflected lights; and derive an angle of the surface by deriving phase values of the reflected lights based on the light quantity value for the reflected lights.

Abstract: An apparatus (70) for surface contour imaging of an object has an illumination apparatus energizable to direct one or more illumination patterns (46) toward a surface position. A sensing apparatus (40) has at least one lens (34) and a sensor (30) that is energizable to obtain one or more images of the surface position corresponding to the illumination patterns (46). A calibration target (100) is detachably coupled to the apparatus (70) in the surface position, wherein the calibration target (100) has a set having a plurality of raised features (50) that are uniformly spaced apart with respect to first and second orthogonal axes that define a first plane and having a uniform height along a height axis that is orthogonal to the first plane. The raised features (50) further have at least a first slanted surface (54) that is oblique with respect to the first plane and oblique with respect to the height axis.

Abstract: In a computer-implemented method and system for capturing the condition of a structure, the structure is scanned with an unmanned aerial vehicle (UAV). Data collected by the UAV corresponding to points on a surface of a structure is received and a 3D point cloud is generated for the structure, where the 3D point cloud is generated based at least in part on the received UAV data. A 3D model of the surface of the structure is reconstructed using the 3D point cloud.

Abstract: In a computer-implemented method and system for capturing the condition of a structure, the structure is scanned with an unmanned aerial vehicle (UAV). The UAV receives an instruction to collect information on at least one aspect of a property, and identifies one or more onboard sensors of the UAV to collect the information on the at least one aspect of the property, where the UAV is configured to identify a first set of one or more onboard sensors to collect a first type of data and to identify a second set of one or more onboard sensors to collect a second type of data. The UAV also collects the information on the at least one aspect of the property using the one or more onboard sensors, and identifies, based on the collected information, a type of damage incurred on the at least one aspect of the property.

Abstract: A 3D track assessment method for identifying and assessing features of a railway track bed based on 3D elevation and intensity data gathered from the railway track bed.

Abstract: The present disclosure is directed to a system and a method for compensating non-linear response characteristics in measuring the shape of an object using phase-shifting deflectomerty. More particularly, the present disclosure is directed to a method for compensating non-linear response characteristics in phase-shifting deflectometry including steps of: generating a pattern by a pattern generating portion and projecting the same to a measurement object; obtaining an image of a deformed pattern reflected from the measurement object by a detector; linearizing non-linear responses on the basis of a look up table considering non-linear response characteristics of the pattern generating portion and the detector by a compensation means; and compensating phase-shifting amounts generated due to non-linear response characteristics by the compensation means.

Abstract: A 3D track assessment apparatus and method for identifying and assessing features of a railway track bed based on 3D elevation data gathered from the railway track bed.

Abstract: A measuring device includes a movable probe head and an optical position sensing device for determining the spatial position and orientation of the probe head relative to a reference point. The position sensing device includes at least three position determination modules, arranged as a transmission unit or as a receiving unit, at least one position determination module being situated on the probe head, and at least one position determination module being situated at the reference point. A transmission unit has transmission unit marking element(s). A receiving unit includes optoelectronic detector(s) and receiving unit marking element(s), positioned in a defined spatial relationship relative to the optoelectronic detector. Visual contacts exist between at least some of the position determination modules. The position determination module on the probe head and the position determination module at the reference point are connected by at least one uninterrupted chain of visual contacts.

Abstract: An augmented reality system and a color compensation method thereof are proposed. The method is applicable to an augmented reality system having a display and an image sensor and include the following steps. A preset object position of a virtual object with respect to an actual scene is set. An image of the actual scene is captured by using the image sensor, and the image of the actual scene is mapped to a field of view of the display to generate a background image with respect to the field of view of the display. Color compensation is performed on the virtual object according to a background overlapping region corresponding to the preset object position in the background image to generate an adjusted virtual object, and the adjusted virtual object is displayed on the display according to the preset object position.

Abstract: The disclosure is related to a method and apparatus of scanning a target object in three dimensions (3D). The method may include projecting a color dashed line pattern onto a target object, scanning the target object with the color dashed line pattern projected thereto, and producing a 3D data of the target object by processing the scanning result. The color dashed line pattern may include multiple dashed line patterns each of which is individually used to calculate the 3D data of the target object.

Abstract: A composite sine-trapezoidal fringe structured light 3D measurement method includes projecting trapezoidal fringe patterns onto a measured object and capturing fringe images; sorting the fringe images by brightness, resolving them into uniform light images and sinusoidal light images, and obtaining a sub-region ordinal number of each image; using the uniform light image to identify a strength response model of the captured fringe image, and obtaining a strength response model parameter; an actual projection strength, a sub-region phase of the sinusoidal light image according to the actual projection strength, a wrapped phase according to sub-region phase and sub-region ordinal number, an absolute phase according to the wrapped phase and sub-region ordinal number, a surface point of the measured object at the positions of a projector pixel and a camera pixel according to the absolute phase, and an object surface model of the measured object by a reconstruction by triangulation.

Abstract: A handheld skin monitoring or measuring device includes a camera having a camera optical axis; and a structured light arrangement configured to project three or more laser fan beams such that the laser fan beams cross at a crossing point in front of the camera.

Abstract: Provided is a three-dimensional information detection device having a configuration in which detection accuracy of three-dimensional information of a measurement target object is not lowered even in a case where an optical system that includes a projection unit, a first imaging unit and a second imaging unit is covered with a light transmissive cover so that the optical system is not exposed to the outside. The three-dimensional information detection device includes the projection unit that projects an image pattern onto a measurement target object, the first imaging unit and the second imaging unit that respectively image the image pattern, a transmissive cover that covers the optical system that includes the projection unit, the first imaging unit, and the second imaging unit, and a calculation unit that calculates three-dimensional information of the measurement target object on the basis of the image pattern that is imaged using the first imaging unit and the second imaging unit.

Abstract: The present disclosure provides a high resolution structured light system that is also capable of maintaining high throughput. The high resolution structured light system includes one or more image capture devices, such as a camera and/or an image sensor, a projector, and a blurring element. The projector is configured to project a binary pattern so that the projector can operate at high throughput. The binary projection pattern is subsequently filtered by the blurring element to remove high frequency components of the binary projection pattern. This filtering smoothes out sharp edges of the binary projection pattern, thereby creating a blurred projection pattern that changes gradually from the low value to the high value. This gradual change can be used by the structured light system to resolve spatial changes in the 3D profile that could not otherwise be resolved using a binary pattern.

Abstract: In a computer-implemented method and system for capturing the condition of a structure, the structure is scanned with a three-dimensional (3D) scanner. The 3D scanner generates 3D data. A point cloud or 3D model is constructed from the 3D data. The point cloud or 3D model is then analyzed to determine the condition of the structure.

Abstract: For three-dimensional topography measurement of a surface of an object patterned illumination is projected on the surface through an objective. A relative movement between the object and the objective is carried out, and plural images of the surface are recorded through the objective by a detector. The direction of the relative movement includes an oblique angle with an optical axis of the objective. Height information for a given position on the surface is derived from a variation of the intensity recorded from the respective position. Also, patterned illumination and uniform illumination may be projected alternatingly on the surface, while images of the surface are recorded during a relative movement of the object and the objective along an optical axis of the objective. Uniform illumination is used for obtaining height information for specular structures on the surface, patterned illumination is used for obtaining height information on other parts of the surface.

Abstract: An optical sensor includes at least two optical sensing pixels and at least two different grating elements. These grating elements are disposed above these optical sensing pixels correspondingly.

Abstract: An arithmetic device includes an imaging section adapted to take an image of the measurement object, a relative phase calculation section adapted to calculate a relative phase, and a projection control section adapted to perform a first pattern projection and a second pattern projection, and the relative phase calculation section adapted to obtain a grayscale image of a measurement object on which light is projected due to the first pattern projection and a grayscale image of the measurement object on which light is projected due to the second pattern projection from the imaging section to calculate the relative phase using the grayscale images obtained.

Abstract: In an embodiment, an optical projector is provided with a laser array. Each laser is either collimated or focused to a fixed distance. At least one multiple beam grating (MBG) is placed in front of the laser array. The light pattern from the laser array is duplicated by the MBG, and cast on an object to be measured. The pattern on the object is changed by rotating the MBG. As a result, the number of patterns of structured dots that can be projected on the object is nearly unlimited. The optical projector can be used to provide depth perception to motion detection systems, to vehicle self-driving systems, and for many other uses.

Abstract: A height mapping system includes a controller configured to generate a height map of a region of interest of a sample with a first optical metrology system having a first numerical aperture, receive images of features having known three-dimensional shapes at selected image plane locations from a second optical metrology system having a second numerical aperture larger than the first numerical aperture, calculate distances between the imaging plane locations and peaks of the features based on in-focus portions of the images and the known three-dimensional shapes, determine distances between the imaging plane locations and a surface of the sample for the features based on the height map, and determine heights of the features by combining the distances between the imaging plane locations and peaks of the features with the distances between the imaging plane locations and the surface of the sample for the one or more features.

Abstract: Systems, apparatus, and methods for generating a fused depth map from one or more individual depth maps, wherein the fused depth map is configured to provide robust depth estimation for points within the depth map. The methods, apparatus, or systems may comprise components that identify a field of view (FOV) of an imaging device configured to capture an image of the FOV and select a first depth sensing method. The system or method may sense a depth of the FOV with respect to the imaging device using the first selected depth sensing method and generate a first depth map of the FOV based on the sensed depth of the first selected depth sensing method. The system or method may also identify a region of one or more points of the first depth map having one or more inaccurate depth measurements and determine if additional depth sensing is needed.

Abstract: A method for projection includes generating a pattern of illumination, and positioning an array of lenses so as to project different, respective parts of the pattern onto a scene.

Abstract: Provided is a method for calculating a height map of a sample comprising a body of a transparent material having a refractive index with an inclined or curved surface, the body being provided on an underlying surface extending laterally from underneath the body. The method may include positioning a first area of a body of a transparent material with an inclined or curved surface and a second area of the underlying surface extending laterally from underneath the body under an optical profiler, measuring a height map of the first area and the second area with the optical profiler; and calculating a height map of the inclined or curved surface by using the refractive index, the measured height map of the first area and the second area.

Abstract: Provided is an image-acquisition apparatus including: a scanning portion that scans illumination light emitted from a light source; an optical system that focuses the scanned illumination light on a sample, while collecting signal light beams generated at the individual scanning positions on the sample; a detector that detects the collected signal light beams and that generates detection signals thereof; a signal controller that is configured to generate periodic signals that are repeated at a predetermined period; a light controller that is configured to temporally control a position or an intensity of the illumination light in accordance with the generated periodic signals; and a computer that is configured to process, in accordance with the generated periodic signals, the detection signals generated, wherein the computer is provided with a frequency shifter for shifting frequencies of the detection signals, and an integrator that integrates the shifted detection signals at an integration time.

Abstract: A three-dimensional measuring apparatus includes a first irradiating unit, a second irradiating unit, imaging unit that can image a measured object, a first image data acquiring unit that acquires a plurality of image data imaged by the imaging unit under the light pattern irradiated from the first irradiating unit for each predetermined amount of conveyance by the measured object, a three-dimensional measuring unit that three dimensionally measures based on a plurality of image data acquired by the first image data acquiring unit, and a second image data acquiring unit that acquires image data imaged by the imaging unit under the second light irradiated from the second irradiating unit between after predetermined image data from among the plurality of image data acquired by the first image data acquiring unit is imaged and until the next image data is imaged.

Abstract: A tool or attachment jig for mounting an optical triangulation sensor on a turbine blade in a position to measure the gap between the distal tip of the turbine blade and the adjacent shroud. The tool includes a device for indicating the orientation of the sensor. This means that the tool can match a measurement from the optical triangulation sensor with a position on the circumference of the shroud. By taking a plurality of measurements as the turbine blade is rotated with respect to the annular casing, an angular profile for the gap between the turbine blade and the casing can be obtained in a much quicker and more efficient way than a conventional system.

Abstract: A 3-D camera for obtaining an image of at least one surface of at least one object. The camera comprises a light source, arranged to illuminate the object, wherein a light beam emitted from the light source defines a projection optical path. The camera also includes at least one first aperture having a first predetermined size, interposed in the projection optical path such that the light beam passes through it. An image sensor receives light back-scattered by the object, the back-scattered light defining an observation optical path. At least one second aperture having a second predetermined size, is interposed in the observation optical path such that the back-scattered light passes through it. In one example embodiment of the invention, the first predetermined size is greater than the second predetermined size, and at least one optic is arranged in both the projection and observation optical paths.

Abstract: A structured light generating device and a measuring system and method are provided. The structured light generating device includes: a light modulating element for receiving a projection light beam and modulating the projection light beam into a first structured light beam having a pattern, and a light shifting element corresponding to the light modulating element for receiving and shifting the first structured light beam to generate a second structured light beam having the pattern. A shift difference is formed between the first structured light beam and the second structured light beam, and the first structured light beam and the second structured light beam are superimposed to form a superimposed structured light beam so as to improve resolution.

Abstract: The invention relates to a method for measuring a dental situation comprising a plurality of implants and/or preparations for inserting dental restorations. Using a first measuring method, a first region of the dental situation is initially recorded while first measurement data are generated. The first region is selected to comprise at least two implants and/or preparations. Subsequently, object regions surrounding the implants and/or the preparations are established, and, while using a second measuring method, the established object regions are detected, and second measurement data are generated. The second measuring method is more precise than the first measuring method.

Abstract: In a computer-implemented method and system for capturing the condition of a structure, the structure is scanned with a three-dimensional (3D) scanner. The 3D scanner generates 3D data. A point cloud or 3D model is constructed from the 3D data. The point cloud or 3D model is then analyzed to determine the condition of the structure.

Abstract: To inspect the shape of a metallic body further accurately, regardless of surface roughness of the metallic body. A shape inspection apparatus for a metallic body according to the present invention includes: a measurement apparatus configured to irradiate a metallic body with at least two illumination light beams, and measure reflected light of the two illumination light beams from the metallic body separately; and an arithmetic processing apparatus configured to calculate information used for shape inspection of the metallic body on the basis of luminance values of the reflected light. The measurement apparatus includes a first illumination light source and a second illumination light source configured to irradiate the metallic body with strip-shaped illumination light having mutually different peak wavelengths, and a color line sensor camera configured to measure reflected light of first illumination light and reflected light of second illumination light, separately.

Abstract: A handheld device for scanning a muzzle pattern of an animal, the device comprising: a scanning segment configured to fit over the muzzle of the animal and a plurality of scanning cameras attached to the scanning segment for capturing the muzzle pattern from different angles. The device further comprises an image processor for combining and processing scanned muzzle patterns from the plurality of scanning cameras and displaying the processed muzzle pattern on an image viewer. A handle segment comprising a plurality of control buttons and a communication interface for connecting and transferring data to an external device.

Abstract: Work cell and factory level automation require that an Automated Guided Vehicle (AGV) achieve demanding positional accuracy and repeatability relative to a cradle fixture or workstand within a work cell. The AGV makes distance measurements of objects within the work cell using laser scanner sensors. The distance measurements are filtered of objects that are not target features on the cradle fixture or workstand. Systematic or bias errors of the laser scanner sensor are removed from the filtered distance measurements, and a mathematical filter or estimator is applied to the filtered distance measurements using random errors of the laser scanner sensor to generate estimated distance measurements. A map of the target features is then constructed using the estimated distance measurements, wherein the map is used for path planning and navigation control of the AGV relative to the cradle fixture or workstand within the work cell.

Abstract: A scanner is used for scanning an object, in particular one or more teeth (13, 14, 15) or a dental cast. An improved scanner comprises a carrier (2) on which a plurality of projectors (4) for projecting a pattern onto the object and a plurality of cameras (5) for recording the object are provided one beside the other in an array.

Abstract: A system and method for determining positions in three-dimensional space are described. The system includes a controller, a phase image module, a presentation module and a phase determination module. The controller receives projector geometry parameters. A phase image module determines a plurality of sinusoidal images where a constant phase represents a flat plane in a three-dimensional space based on the projector geometry parameters. A presentation module projects the plurality of sinusoidal images to be captured by a camera. The phase determination module determines a phase value at a camera pixel. The phase determination module determines an intersection between the flat plane of the phase value and the camera pixel to identify a ray-plane intersection.

Abstract: A method of workflow monitoring and analysis includes: according to an image to generate at least one three-dimensional joint coordinate, and according to the three dimensional joint coordinate to generate at least one task posture information; according to a movement information to generate at least one three-dimensional track information, and according to the three dimensional track to generate at least one task track information; and according to a workpiece posture information, the task posture information, a workpiece movement information and the task track information to generate a task semanticist.

Abstract: A device for detecting elevations and/or depressions on bottles, in particular in a labeling machine, the device comprising a lighting unit with a light screen for generating a light reflection on a bottle to be examined and at least one camera for detecting the light reflection. By areas of varying luminance being formed on the light screen, molding seams can be reliably detected over a large area of the bottle wall and embossings can be located in various rotational positions of the bottle. The invention also relates to a method for applying the device.

Abstract: Dimensions of a surface feature are determined by capturing an image of the surface feature and determining a scale associated with the image. Structured light may be projected onto the surface, such that the position of structured light in the captured image allows determination of scale. A non-planar surface may be unwrapped. The surface may alternatively be projected into a plane to correct for the scene being tilted with respect to the camera axis. A border of the surface feature may be input manually by a user. An apparatus and system for implementing the method are also disclosed.

Abstract: In conventional technologies in surface measurement and defect inspection, considerations are not made for the following points: (1) coarseness of resolution of spatial frequency; (2) variation of detection signal resulting from anisotropy of microroughness; and (3) variation of background signal resulting from anisotropy of microroughness. The present invention is characterized by acquiring a feature quantity about the anisotropy of the microroughness of the substrate surface. Further, the present invention is characterized by acquiring a surface state in consideration of the anisotropy of the microroughness of the substrate surface. Further the present invention is characterized by detecting a defect over the substrate in consideration of the anisotropy of the microroughness of the substrate surface.

Abstract: An apparatus for measurement of a three-dimensional (3D) shape includes a lens unit transmitting slit beams to a plurality of measurement objects, a light source unit irradiating the plurality of slit beams to the lens unit at different angles, an imaging unit obtaining images of the plurality of measurement objects formed by the slit beams irradiated on the plurality of measurement objects, and a calculation processing unit generating information regarding a 3D shape of the plurality of measurement objects from the images obtained by the imaging unit.

Abstract: A system for sizing and fitting an individual for apparel, accessories, or prosthetics includes at least one energy emitter configured to emit energy onto a field-of-view that contains an individual, and at least one energy sensor configured to capture reflected energy from within the field-of-view. A spatial measurement module calculates spatial measurements of a surface portion of the body of the individual when the individual is either stationary or moving about in real-time, based on data from the energy sensor.

Abstract: Provided is a body measurement device capable of carrying out a body measurement, such as of abdominal girth or chest girth, with a simple configuration which eliminates moving components. In particular, the body measurement device includes computing device that converts two-dimensional coordinates of images of linear light beams included in images having been captured by a plurality of image capturing devices into two-dimensional coordinates on a certain plane in accordance with a relation stored in a database, and computes a peripheral length of a body of a target person within the certain plane.

Abstract: A non-contact method of inspecting the topography of an area of an object via analysis of the phase of a pattern projected on the object. The method includes taking a first image of the object, obtained from a first perspective, on which an optical pattern is projected, and taking a second image of the object, obtained from a second perspective, on which an optical pattern is projected but in which the optical pattern, as it falls on the object, in the second image differs to that in the first image. The method further includes determining data describing the topography of at least a region of the object based on phase data relating to the phase of at least a region of the optical pattern as imaged in the first image. Phase data obtained from a corresponding region of the object as imaged in the second image is used to resolve any ambiguity in the phase or topography data obtained from the first image.

Abstract: This invention provides a 3D laser capture system, and method for employing the same, that avoids a shadow effect and allows for straightforward set-up and use of the system in imaging the surface profile of an object. A camera is provided with a head assembly that includes a lens configuration and a pair of mirrors that generate two simultaneous views, of opposite object sides. The two views are projected by the mirrors and lens configuration onto discrete portions of the camera's image sensor. The separate images captured on each of the two portions of the sensor are both analyzed by the systems vision system processor, thereby allowing the processor's profiling algorithm to analyze the surface from two different viewing angles concurrently. Portions of the laser blocked in one view are generally visible in the other view. Alternatively, a second lens can be employed to provide a second field of view.

Abstract: A shape measurement apparatus includes a work stage supporting a target substrate, a pattern-projecting section including a light source, a grating part partially transmitting and blocking light generated by the light source to generate a grating image and a projecting lens part making the grating image on a measurement target of the target substrate, an image-capturing section capturing the grating image reflected by the measurement target of the target substrate, and a control section controlling the work stage, the pattern-projecting section and the image-capturing section, calculating a reliability index of the grating image and phases of the grating image, which is corresponding to the measurement target, and inspecting the measurement target by using the reliability index and the phases. Thus, the accuracy of measurement may be enhanced.

Abstract: Acquisition device for taking a digital relief image of the surface of a tire having two color cameras for the acquisition of stereoscopic images. Each camera has N primary image sensors in a given primary color (R, G, B), where N is equal to or greater than two. Each camera is placed so as to acquire the light emitted (E) towards a predetermined area (Z) of the surface of the tire by N lights and reflected (F) by the surface of the tire. The N lights simultaneously project each independently and along the same direction onto the predetermined area of the surface of the tire. The projected light has a wavelength that corresponds to one of the primary colors of the cameras, according to a fringe system (S1, S2, . . . SN) consisting of an alternation of illuminated and non-illuminated bands of given width (L1, L2, . . . LN).