3540results about "Photogrammetry/videogrammetry" patented technology

The invention discloses a method for detecting and tracking obstacles in front of a vehicle, aiming to overcome the defect and shortage in detection and tracking of obstacles in front of the vehicle by using a single-type sensor. The method comprises the following steps of: 1. establishing a relation for realizing data conversion between a millimeter wave radar coordinate system and a camera coordinate system; 2. receiving, resolving and processing the millimeter wave radar data, and carrying out preliminary classification on the obstacles; 3. synchronously collecting a camera image and receiving millimeter wave radar data; 4. classifying the obstacles in front of the vehicle: 1) projecting scanning points of the millimeter wave radar data on a camera coordinate system by combining the methods of millimeter wave radar and monocular vision, and establishing a region of interest (ROI) of the obstacles on the image; 2) carrying out preliminary classification on different obstacles in theROI established on the image, and confirming the types of the obstacles by using different image processing algorithms; and 5. tracking the obstacles in front of the vehicle.

A computer implemented method is for processing an original digital elevation model (DEM) including data for terrain and a plurality of objects thereon. The method includes generating a lower-resolution DEM from the original DEM, and generating an objects-only DEM based upon a comparison of the lower-resolution DEM and the original DEM. The method further includes reducing noise in the objects-only DEM.

The mirror has a base, inner stage, reflector, controller, and mechanical subsystems pivotally supporting stage and reflector: subsystem #1, the stage (about one rotation axis, relative to the base); subsystem #2, the reflector (about another axis, relative to the stage). Stage and reflector each rotate on respective jewel, ceramic or other refractory bearings. Controller establishes stage / base and reflector / stage angles. Subsystems include respective bearings. The method includes (1) using the two-axis mechanism to receive, and measure an incident angle of, incident rays from an external object; (2) then using that mechanism to direct a radiation beam from a laser source toward the external object, responsive to incident rays. Optionally step (1) operates the mirror at peak acceleration, or minimum response time, as function of mirror thickness; and provides two- to three-millimeter mirror thickness. Optionally step (2) directs the beam to disrupt object function or impair object structure.

Digital watermarking technology is used in conjunction with map data, such as is acquired by satellite and other aerial sensors. The watermarks are used to track metadata, provide serialization and forensic tracking, help auto-correlate image data, and quilt together related imagery. One aspect of the present invention contemplates that incoming imagery is automatically geo-referenced and combined with previously collected data sets so as to facilitate generation of revised composite maps. Another aspect of the present invention associates geovector information with a photograph via a digital watermark.

A system, apparatus and method of obtaining data from a 2D image in order to determine the 3D shape of objects appearing in said 2D image, said 2D image having distinguishable epipolar lines, said method comprising: (a) providing a predefined set of types of features, giving rise to feature types, each feature type being distinguishable according to a unique bi-dimensional formation; (b) providing a coded light pattern comprising multiple appearances of said feature types; (c) projecting said coded light pattern on said objects such that the distance between epipolar lines associated with substantially identical features is less than the distance between corresponding locations of two neighboring features; (d) capturing a 2D image of said objects having said projected coded light pattern projected thereupon, said 2D image comprising reflected said feature types; and (e) extracting: (i) said reflected feature types according to the unique bi-dimensional formations; and (ii) locations of said reflected feature types on respective said epipolar lines in said 2D image.

The invention relates to a method and a system for detecting a road barrier. The invention discloses a first barrier detection model based on a video pick-up device, a second barrier detection model based on the video pick-up device and a millimeter-wave radar, and a third barrier detection model based on a three-dimensional laser radar and an infrared pick-up device, wherein complementary detection for the multiple models is formed through a rough set based fuzzy neural network algorithm, so that characteristic information of the road barrier can be obtained in real time. The method and system for detecting the road barrier can carry out real-time and effective road barrier detection under the conditions of different road scenes and different weathers to obtain parameters such as the travelling speed and direction of different barriers exactly, can extract and analyze surrounding environment information of vehicles from the road traffic environment, and can judge abnormal traffic behaviors so as to relieve the current urban traffic pressure and improve traffic management efficiency.

The invention provides a multi-robot automatic locating method for a robot restaurant in the locating field, wherein, a multi-robot automatic locating system comprises a central server module for therobot restaurant, a plurality of service robot locating system modules and a wireless communication module. In the invention, the central server module for the robot restaurant is in charge of globallocation on all the service robots in the robot restaurant; meeting robots in the robot restaurant and waiter robots are provided with service robot locating systems which can determine self positioncombined with multiple locating modes; and all the service robot locating system modules in the robot restaurant can perform communication related to locating information with the central server module for the robot restaurant or other service robot locating systems by the wireless communication module. The system combines practical layout in the robot restaurant and realizes high-precision multi-robot automatic location by combining with multiple locating modes together; and the system can be also applied to other scenes such as an exhibition hall and the like.

A method for determining a mobility of foot comprising: measuring at least a portion of a shape of the foot under a first weight load; measuring the at least the portion of the shape of the foot under a second weight load; and comparing the measurement under the first weight load to the measurement under the second weight load, thereby determining a mobility of at least the portion of the foot.

Systems and methods are provided for extracting features of a building from data having spatial coordinates. The method includes extracting one or more walls and roofs from the data; constructing a building model from the walls and roofs; extracting color data associated with the data and projecting the color data onto the building model; superimposing one or more images onto the building model; applying pattern recognition to extract one or more three-dimensional structural components of the building model; replacing identified three-dimensional structural components with the standard structural elements; comparing subsequent data sets to identify a changed object; and, extracting one or more poles in the building model's vicinity or along the edges of roads.