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87 results about "Digital imaging technology" patented technology

System and method for fast precise measurement and total factor data acquisition of high speed railway

The invention relates to the field of precise railway measurement, high speed railway rail detection and security and digital railway, in particular to a system and a method for carrying out movable precise measurement of the high speed railway and synchronously obtaining total factor data along the line of the railway on the basis of GPS (Global Positioning System) / IMU (Inertia Measurement Unit) positioning and orientation, laser scan and digital imaging technologies. The invention further relates to a special railway measurement mark. The system consists of a laser scanner (1), a digital imaging device (2), a GPS receiver (3), an IMU (4), an industrial computer (5) and a power supply unit (6), and the system can obtain three-dimensional point clouds of rail, roadbed and peripheral environment of the high speed railway and digital images oriented by the earth. The method comprises a method for carrying out movable precise measurement movable precise measurement of the high speed railway and a method for improving the measurement precision by carrying out the simultaneous adjustment with a control point of a rail control network (such as a CPIII foundation pile control network). The system has high integration degree and has the characteristics of high efficiency and high precision, and the precision of the data can reach millimeter level.
Owner:扬州德可达科技有限公司

Vegetable and fruit picking robot and control method thereof

The invention discloses a vegetable and fruit picking robot and a control method thereof. The vegetable and fruit picking robot comprises a walking mechanism. A base is arranged on the walking mechanism. Storage baskets are arranged at the front and rear ends of the base respectively. An execution mechanism, a recognition system, a first driving mechanism, a second driving mechanism and a controller are arranged on the base. The controller is connected with the recognition system, the first driving mechanism and the second driving mechanism through wires. Both fruits on trees and plant fruits at low positions can be picked, and therefore the picking object range is wide; the crawler-type walking mechanism drives a plurality of mechanical arms to work at the same time, and therefore the picking efficiency is high; a small arm is flexible and continuous in movement, the stretching range of the mechanical arms is wide, and therefore the vegetable and fruit picking robot can adapt to various operating environments; the multi-sensor function and the digital imaging technology are adopted, and therefore the fruits can be accurately recognized and positioned; clamping force is controlled through sensor detection, and therefore the fruits are prevented from being damaged.
Owner:平顶山工业职业技术学院

Method for monitoring three-dimensional deformation of foundation pit

The invention discloses a method for monitoring three-dimensional deformation of a foundation pit. The method is used for the field of construction safety monitoring. The method includes: acquiring monitored picture information of a slope of the foundation pit through photographing of a measurement camera, then utilizing close-range photogrammetric technology to perform information processing on monitored pictures, acquiring three-dimensional coordinates of monitoring points of the slope of the foundation pit, acquiring three-dimensional coordinates at different time points via photographing at different moments, drawing a tendency chart of the three-dimensional coordinates, changing over time, of all the monitoring points, and acquiring displacements of all the monitoring points in the monitoring process so as to predict deformation tendency of each monitoring point. Compared with the prior art, the method has the advantages that a large amount of physical information and geometrical information of the measured foundation pit can be acquired instantaneously, and monitoring is completed in rugged environment and on the conditions of no damage to the measured foundation pit and noninterference in the natural state of the foundation pit. The means of digital information and digital imaging technology and self-control technology are ingeniously applied to safety monitoring for the foundation pit. The whole monitoring process is efficient, low in cost, safe and reliable.
Owner:GUANGZHOU HENGSHENG CONSTR ENG

Electric arc capturing and positioning system for electronic railway connecting net and method thereof

The invention relate to the field of electronic railway monitoring and safety, in particular to an electric arc capturing and positioning system for an electronic railway connecting net and a method thereof based on a high-accuracy global positioning system GPS/inertia measurement device IMU positioning and orienting technology and a high-speed digital imaging technology. The system consists of high-speed digital imaging equipment (1), a GPS receiver (2), an IMU inertia measurement device (3), a fixing bracket and adaption device (4), an industry control computer (5), a display and control device (6) anda power supply device (7). The system is arranged on the top of an electrical locomotive, when the electrical locomotive runs, the high-speed digital imaging equipment (1) continuously shoots the images of a position that pantograph of the electric locomotive is contacted with the connecting net, and GPS and IMU are combined to record the tracing information of operation of the electric locomotive; by data post-treatment, a plurality of images of the electric arc in an image sequence are automatically extracted; the electric arc images are matched with the operation trace of the electric locomotive by using time parameters of the GPS; and the start and stop positions, durability and continuity distance of generation of the electric arc are calculated.
Owner:扬州德可达科技有限公司

Anchor rod pallet load visualization digital imaging method

The invention relates to an anchor rod pallet load visualization digital imaging method suitable for a non-contact measurement method of a stressed underground anchor rod. The anchor rod pallet load visualization digital imaging method specifically comprises the following steps: a plurality of images of a pallet before and after a deformation is shot using a CCD camera, space identification is performed on the multiple images of the pallet before and after the surface deformation through adoption of a digital speckle correlation technology, a three-dimensional coordinate is obtained through calculation, a three-dimensional model before and after the surface deformation of the pallet is established through fitting, and data before and after the surface deformation of the pallet are obtained; and a strain field is obtained through a rapid three-dimensional deformation analysis and comparison of the three-dimensional space data before and after the deformation of the pallet, a stress field is obtained through a combination with pallet bending rigidity, and a real-time load of an anchor rod can be obtained through integral back calculation of the stress field. Compared with a traditional strain foil, a traditional displacement sensor, a traditional anchor rod puller and a traditional hydraulic pillow, the anchor rod pallet load visualization digital imaging method is advantageous in that usage of a pallet load visualization digital imaging technology is simple and convenient, and three-dimensional deformation and strain measurement are achieved rapidly.
Owner:CHINA UNIV OF MINING & TECH

Confrontation shooting simulation technology with trajectory representation capability and damage diversity

The invention belongs to the technical field of confrontation shooting simulation and in particular relates to one set of an algorithm for judging a simulated shooting effect by a flight track kineticenergy projectile, minimum structures and functions of a device and an information platform which are matched with the algorithm, and a principle for recognizing a target and identifying diversifieddamage effects. The algorithm provided by the invention takes a digital imaging technology as the foundation, and a shooter opinion is deduced through resolving an optical imaging relation and quantifying a digital image; a position relation between a target and the projectile is judged by combining actual determination and a projectile calculation technology; and simulated shooting can be carriedout on any physical object. The algorithm provided by the invention is better that a light direction collimation technology which cannot represent a trajectory, is optimized and innovated in the aspect of damage recognition, can more vividly represent the shooting and can obtain more valuable battlefield data; and the algorithm is especially applicable to the shooting simulation of a sniper riflesystem, is also applicable to other firearms or point mass destruction weapons with a parabolic trajectory and also can be used for civilian shooting sports or entertainment.
Owner:徐珂

Multi-lens detector array curved image surface splicing method

The invention relates to a multi-lens detector array curved image surface splicing method and belongs to the large-field-of-view digital imaging technical field. The objective of the invention is to solve problems of complex operation, high cost and difficult post-stage processing existing in the prior art. According to the technical scheme of the invention, a plurality of sets of imaging lenses of which the image surfaces are curved surfaces acquire images through detector arrays on the respective curved image surfaces of the imaging lenses; the plurality of sets of detector arrays are staggered at directions which are different from the directions of respective optical axes of the imaging lenses, so that a plurality of sets of staggered and complementary reticular images can be formed; the reticular images are spliced to each other so as to from a seamless large-field-of-view image; and the layout of the detector arrays is calculated through adopting a curved surface point distribution mathematical topology method and according to the surface types of the curved image surfaces of the imaging lenses, so that topologic arrangement of the plurality of detector arrays can be mutually staggered, and the boundaries of the detector arrays are overlapped with each other. With the multi-lens detector array curved image surface splicing method of the invention adopted, curvature-of-field correction operation can be omitted, and the complexity of the imaging lenses can be reduced, and system processing cost can be reduced, and the complexity of later-stage image splicing processing can be simplified, and a lot of computational processing steps can be omitted.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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