摘要:
A pressure detection method is provided. The method includes: sampling n frames of fingerprint image in sequence by a fingerprint recognition sensor, where n≥2 and n is an integer; obtaining an area of fingerprint in each of the n frames of fingerprint image; and determining a change trend of a pressure acting on the fingerprint recognition sensor according to a change trend of the areas in the n frames of fingerprint image.
摘要:
A paper sheet handling apparatus includes a calculation unit and a determination unit. The calculation unit calculates, on the basis of a thickness of a paper sheet that passes through a conveyance path and a contour of the paper sheet, a total area of a cumulative area of overlapping regions of the paper sheet in the contour and an area of a non-overlapping region of the paper sheet in the contour. The determination unit determines the number of the paper sheets on the basis of the calculated total area.
摘要:
A construction management system for constructing a building including at least one heavy lifting machine for moving a one building element to a mounting position on the building, a central computing unit providing a building information model comprising at least a construction plan comprising a target state of the construction of the building, a three-dimensional model of an actual construction state of the building, and a three-dimensional model of the element, wherein the central computing unit is adapted to determine the mounting position for the element based on the construction plan, the model of the current construction state and on the model of the element.
摘要:
An information processing apparatus according to an embodiment includes a memory and one or more processors configured to function as a map acquisition unit, a filtering unit and a converting unit. The map acquisition unit acquires a polar coordinate map specifying first occupancy of a target in a polar coordinate space. The filtering unit performs filtering on the polar coordinate map using filtering windows of sizes corresponding to a distance from a reference position. The converting unit converts the filtered polar coordinate map into a rectangular coordinate space.
摘要:
A method of documenting a position of an underground utility which involves placing temporary markings on a ground surface designating an underground location of the underground utility. A photograph is then taken providing an overhead panoramic view of the temporary markings designating the underground location of the underground utility. The photograph includes visual landmarks, such as sidewalks, driveways, trees and hedges, thereby providing a visual reference. After excavation has taken place and the temporary markings have been removed along with the ground surface, using the photograph to reconfirm the underground location of the underground utility by using the visual reference provided by the relationship that the temporary markings depicted in the photograph bear to the visual landmarks that remain after excavation.
摘要:
An area measurement device includes an image acquisition module acquires a first image including an image of a target to be measured. A polygon establishment module determines at least one first polygon in first image formed by connecting lines between multiple first target points on the image of the target. A target point determination module determines multiple second target points on the target according to multiple first target points. A measurement module acquires a distance from a laser source to each second target point and an included angle of connecting lines between every two adjacent second target points and laser source in a laser ranging manner. A length calculation module calculates each side length of a second polygon/polygons which is/are a mapping/mappings of first polygon/polygons on the target. An area calculation module calculates an area of second polygon/polygons as an area of the target.
摘要:
An apparatus, method and associated fiber-laser architectures for high-power pulsed operation and pumping wavelength-conversion devices. Some embodiments generate blue laser light by frequency quadrupling infrared (IR) light from Tm-doped gain fiber using non-linear wavelength conversion. Some embodiments use a fiber MOPA configuration to amplify a seed signal from a semiconductor laser or ring fiber laser. Some embodiments use the frequency-quadrupled blue light for underwater communications, imaging, and/or object and anomaly detection. Some embodiments amplitude modulate the IR seed signal to encode communication data sent to or from a submarine once the modulated light has its wavelength quartered. Other embodiments transmit blue-light pulses in a scanned pattern and detect scattered light to measure distances to objects in a raster-scanned underwater volume, which in turn are used to generate a data structure representing a three-dimensional rendition of the underwater scene being imaged for viewing by a person or for other software analysis.
摘要:
A viscoelastic characteristic measurement apparatus (1) according to the present invention includes: a sample deforming unit (11) that applies an external force to a measurement sample (S) to impose a cyclic deformation; a first viscoelastic characteristic calculation unit (15) that calculates a low-frequency viscoelastic characteristic of the measurement sample (S) based on stress acting on the measurement sample (S) that has been deformed by the sample deforming unit (11) and distortion of the measurement sample (S); an emission unit (12) that emits an incident sound wave to the measurement sample (S); a receiver (12) that receives a reflected sound wave generated as a result of reflection of the incident sound wave emitted from the emission unit (25) in the measurement sample (S) or a transmitted sound wave generated as a result of transmission of the incident sound wave through the measurement sample (S); and a second viscoelastic characteristic calculation unit (15) that calculates a high-frequency viscoelastic characteristic of the measurement sample (S) at a frequency of the incident sound wave based on the reflected sound wave or the transmitted sound wave received by the receiver (25).
摘要:
A method and system for processing digital image data taken from a three-dimensional topographic area including terrain and a right of way including a first and a second object to establish a clearance surface to define clearance violations within a boundary area. Waypoints are located to define a centerline and the boundary area to be analyzed. Vegetation coordinate points in the scene are determined from the digital image data. Ground coordinate points are determined from the digital image data. A clearance surface segment is constructed within the boundary area between the first and second object. The clearance surface is determined from the location of the first and second object and clearance criteria. The clearance surface is used to define a violation region.