There is provided an operating method of an optical positioning system including: capturing an image frame of a detected surface, which has interleaved bright regions and dark regions, using a field of view and a shutter time of an optical sensor; counting a number of edge pairs between the bright regions and the dark regions that the field of view passes; calculating an average value of the image frame; calculating a ratio between the calculated average value and the shutter time; determining that the field of view is aligned with one of the dark regions when the ratio is smaller than a ratio threshold; and determining that the field of view is aligned with one of the bright regions when the ratio is larger than the ratio threshold.

An acquisition device for at least semiautomated acquisition of sets of multiple object data of at least one object, including a movement device for generating a defined relative movement between at least one object data acquisition unit and the at least one object.

An acquisition device for at least semiautomated acquisition of sets of multiple object data of at least one object, including a movement device for generating a defined relative movement between at least one object data acquisition unit and the at least one object.

A shape measurement method includes: acquiring first data of a change of a distance between a first probe and a calibration measurement object and acquiring second data of a change of a distance between a second probe and the calibration measurement object while moving the calibration measurement object in a first direction, the calibration measurement object being rotationally symmetric around an axis parallel to the first direction, the first probe and the second probe being arranged in a second direction orthogonal to the first direction; estimating an error of the movement included in the first data based on the first and second data; acquiring third data of a change of a distance between the first probe and a measurement object while moving the measurement object relative to the first probe in the first direction; and correcting the third data by using the error.

A shape measurement method includes: acquiring first data of a change of a distance between a first probe and a calibration measurement object and acquiring second data of a change of a distance between a second probe and the calibration measurement object while moving the calibration measurement object in a first direction, the calibration measurement object being rotationally symmetric around an axis parallel to the first direction, the first probe and the second probe being arranged in a second direction orthogonal to the first direction; estimating an error of the movement included in the first data based on the first and second data; acquiring third data of a change of a distance between the first probe and a measurement object while moving the measurement object relative to the first probe in the first direction; and correcting the third data by using the error.

A system for monitoring loading and unloading of goods or area transfers of goods. A terminal is positioned close to the point of passage of the goods. The goods being in containers, each container includes a barcode or a container carrier having a barcode. The terminal includes an image capturing device, configured to capture a photograph or film at the time when at least one container or container carrier passes in front of the terminal. A flash connected to the image capturing device triggers when a photograph or film is captured. A control unit includes a microcontroller driving the system and the database. A processing unit to process the photograph or film to identify the barcode captured in the photograph or film. A triggering unit to trigger the capture of a photograph or film based on at least detection of a container indicating passage in front of the terminal.

A dynamic dimensioning system includes at least one camera, a range finder, and a tachometer. A computer may be used to perform a dynamic calibration operation for the cameras coupled over a communications network. The dynamic calibration operation includes a calibration estimate routine configured to generate default configuration parameters selected by a user from among a plurality of pre-defined user inputs via a graphical user interface, and a calibration refinement routine configured to refine the default configuration parameters to generate a completed set of calibration parameters that are set for the at least one camera. The dynamic calibration operation may be performed without first performing any static calibration operation.

A computerized system of performing fish census which otherwise requires high level of domain knowledge and expertise is described. Divers with minimal knowledge of fish can obtain high quality population and species distribution measurements using a stereo camera rig and fish video analyzer software that was developed. The system has two major components: a camera rig and software for fish size, density and biomass estimation. The camera rig consists of a simple stand on which one to four pairs of stereo cameras are mounted to take videos of the benthic floor for a few minutes. The collected videos are uploaded to a server which performs stereo analysis and image recognition. The software produces video clips containing estimates of fish size, density and species biodiversity and a log report containing information about the individual fishes for further end user analysis.

A computerized system of performing fish census which otherwise requires high level of domain knowledge and expertise is described. Divers with minimal knowledge of fish can obtain high quality population and species distribution measurements using a stereo camera rig and fish video analyzer software that was developed. The system has two major components: a camera rig and software for fish size, density and biomass estimation. The camera rig consists of a simple stand on which one to four pairs of stereo cameras are mounted to take videos of the benthic floor for a few minutes. The collected videos are uploaded to a server which performs stereo analysis and image recognition. The software produces video clips containing estimates of fish size, density and species biodiversity and a log report containing information about the individual fishes for further end user analysis.

A displacement meter configured to measure a displacement of a measurement target object includes an illumination assembly configured to illuminate the measurement target object, a photoelectric conversion element array configured to detect reflected light from the measurement target object, and a calculation circuit configured to calculate an amount of the displacement of the measurement target object by using a cross-correlation function of a plurality of images acquired at different timings by the photoelectric conversion element array. The calculation circuit limits a detection range, where the calculation circuit performs processing for detecting a position indicating a peak of the cross-correlation function, to a part of an entire range of the cross-correlation function, detects the position indicating the peak in the limited detection range, and calculates the amount of the displacement based on the detected position indicating the peak.