Provided are a fisheye camera calibration system, method and an electronic device. The system includes a hemispherical target, a fisheye camera and an electronic device. The hemispherical target includes a hemispherical inner surface and multiple markers provided on the hemispherical inner surface. The fisheye camera is used for photographing the hemispherical target and acquiring a target image, where the hemispherical target and the multiple markers provided on the hemispherical inner surface are captured in the target image. The electronic device is used for acquiring initial values of k.sub.1, k.sub.2, k.sub.3, k.sub.4, k.sub.5, u.sub.0, v.sub.0, m.sub.u and m.sub.v, and using a Levenberg-Marquardt algorithm to optimize the initial values of k.sub.1, k.sub.2, k.sub.3, k.sub.4, k.sub.5, u.sub.0, v.sub.0, m.sub.u and m.sub.v, so as to determine imaging model parameters of the fisheye camera.

The disclosure provides an improvement to digital fringe projection techniques in which the optimal focal length settings are automatically determined for reconstructing a 3D profile. In a pre-calibration phase, geometric parameters of the system are calibrated using a few discrete focal length settings. These discretely calibrated geometric parameters are fitted onto a continuous function model. In a 3D autofocusing phase, a set of optimal focal length settings for a scene are determined using a 2D autofocusing technique. Calibrated geometric parameters for each optimal focal length setting are automatically calculated using the continuous geometric parameter model. Finally, a 3D profile of objects in the scene is reconstructed using the calibrated geometric parameters for each optimal focal length setting.

A measurement method, which is performed by a measurement device that measures a displacement of a target object, includes: receiving designation of a designation point on a first image that includes the target object; setting a plurality of set points, based on the designation point; identifying a direction of a line that connects two of the plurality of set points; generating a second image by rotating the first image, the second image being an image in which the identified direction of the line is horizontal or vertical; setting, in the second image, a measurement region that partially includes the line; and measuring the displacement of the target object in the measurement region, the displacement being a displacement in a direction orthogonal to the line.

Systems and methods include a computer-implemented method for providing a photonic sensing system to perform an automated method to characterize displacement of equipment surfaces and monitor changes in real-time. A three-dimensional (3D) point cloud of one or more objects is generated by an analysis and presentation system using light information collected through structured light illumination by an array of structured-light sensors (SLSes) directed toward the one or more objects. Generating the point cloud includes defining points of the 3D point cloud that are relative to reference points on the one or more objects. Real-time contactless 3D surface measurements of the one or more objects are performed using the 3D point cloud. Changes in one or more parts of the one or more objects are determined by the an analysis and presentation system by analyzing the real-time contactless 3D surface measurements.

A system and method are provided for real-time deduction of material carryback in a loading container of a transport vehicle, wherein the material is loaded in the loading container by a work machine at a first site and dumped from the loading container by the transport vehicle at a second site. A first sensor (e.g., a camera associated with the work machine) provides first data corresponding to a volume of material loaded in the loading container in a first work state (e.g., loaded). A second sensor (e.g., a camera or a payload measuring unit associated with the transport vehicle) provides second data corresponding to a volume of material loaded in the loading container in a second work state (e.g., unloaded). A generated output signal corresponds to a calculated total volume of material associated with a work cycle, said total volume based on at least the provided first and second data.

There is provided a profile measuring apparatus, including: an irradiation section configured to irradiate a measurement light to a measurement area of the object; an imaging section configured to obtain an image of the measurement area; a table configured to place the object thereon; a coordinate calculation section configured to calculate a position of the measurement area based on an image detected by a detection section; and a positioning mechanism configured to drive and control a relative position of the imaging section and the table. The positioning mechanism calculates a relative position of the imaging section to the table, based on an information with respect to an edge line direction of a convex portion or an extending direction of a concave portion in the measurement area of the object having a repetitive concave-convex shape, to move at least one of the table and the imaging section.

A turbine blade or vane inspection apparatus comprising a controller, mounting for holding a turbine blade or vane, a source of illumination, and a camera. At least two of the source of illumination, the camera, and the mounting are moveable components. The controller is configured to control the moveable components to (a) position the turbine blade or vane mounted thereon relative to the illumination source so as to provide a contrast of illumination between a feature of the turbine blade or vane and an adjacent surface of the turbine blade or vane and (b), position the camera so that the optical axis of the camera is directed towards the feature. The controller is further configured to determine a dimension and/or shape of the feature based on an image obtained by the camera.

A turbine blade or vane inspection apparatus comprising a controller, mounting for holding a turbine blade or vane, a source of illumination, and a camera. At least two of the source of illumination, the camera, and the mounting are moveable components. The controller is configured to control the moveable components to (a) position the turbine blade or vane mounted thereon relative to the illumination source so as to provide a contrast of illumination between a feature of the turbine blade or vane and an adjacent surface of the turbine blade or vane and (b), position the camera so that the optical axis of the camera is directed towards the feature. The controller is further configured to determine a dimension and/or shape of the feature based on an image obtained by the camera.

A media capture device (MCD) that provides a multi-sensor, free flight camera platform with advanced learning technology to replicate the desires and skills of the purchaser/owner is provided. Advanced algorithms may uniquely enable many functions for autonomous and revolutionary photography. The device may learn about the user, the environment, and/or how to optimize a photographic experience so that compelling events may be captured and composed into efficient and emotional sharing. The device may capture better photos and videos as perceived by one's social circle of friends, and/or may greatly simplify the process of using a camera to the ultimate convenience of full autonomous operation.

A media capture device (MCD) that provides a multi-sensor, free flight camera platform with advanced learning technology to replicate the desires and skills of the purchaser/owner is provided. Advanced algorithms may uniquely enable many functions for autonomous and revolutionary photography. The device may learn about the user, the environment, and/or how to optimize a photographic experience so that compelling events may be captured and composed into efficient and emotional sharing. The device may capture better photos and videos as perceived by one's social circle of friends, and/or may greatly simplify the process of using a camera to the ultimate convenience of full autonomous operation.