185 results about "Geometric property" patented technology

Described is a system for object recognition in colorized point clouds. The system includes an implicit geometry engine that is configured to receive three-dimensional (3D) colorized cloud point data regarding a 3D object of interest and to convert the cloud point data into implicit representations. The engine also generates geometric features. A geometric grammar block is included to generate object cues and recognize geometric objects using geometric tokens and grammars based on object taxonomy. A visual attention cueing block is included to generate object cues based on 3D geometric properties. Finally, an object recognition block is included to perform a local search for objects using cues from the cueing block and the geometric grammar block and to classify the 3D object of interest as a particular object upon a classifier reaching a predetermined threshold.

An image processing method is described for determining depth information from at least two input images recorded by a stereo camera system, the depth information being determined from a disparity map taking into account geometric properties of the stereo camera system, characterized by the following method steps for ascertaining the disparity map: transforming the input images into signature images with the aid of a predefined operator, calculating costs based on the signature images with the aid of a parameter-free statistical rank correlation measure for ascertaining a cost range for predefined disparity levels in relation to at least one of the at least two input images, performing a correspondence analysis for each point of the cost range for the predefined disparity levels, the disparity to be determined corresponding to the lowest costs, and ascertaining the disparity map from the previously determined disparities.

The invention discloses a robot cartesian space trajectory planning method. The method includes establishing a connecting rod coordinate system and obtaining a forward kinematic equation through a kinetic modeling analysis method; solving the rotating angles of a master control joint and a middle joint according to the vector geometric property and trajectory planning requirement of the robot; seeking a relation equation including introduced variables and solving the rotating angle of the corresponding joint by means of the kinetic modeling analysis method and the solved joint rotating angle; determining whether the pose position can be reached through a vector geometric method when the trajectory planning is carried out in a task space with obstacles; and planning the continuous time variant attitudes of coupled position information to complete the planning tasks. According to the method, extraneous roots can be prevented, efficient solutions can be screened and matched, strange paths can be effectively avoided, and meanwhile, the defects of complex end trajectory planned by the joint space can be prevented and optimized.

The present invention provides for characterization of a film (e.g., thickness determination for a silicon oxynitride film) using collected spectral data. For example, an acquired spectrum may be cumulatively integrated and the geometric properties of the integrated spectrum may be used to determine component concentration information. Thickness measurements for the film may be provided based on the component concentration information.

Various single crystals are disclosed including sapphire. The single crystals have desirable geometric properties, including a width not less than about 15 cm and the thickness is not less than about 0.5 cm. The single crystal may also have other features, such as a maximum thickness variation, and as-formed crystals may have a generally symmetrical neck portion, particularly related to the transition from the neck to the main body of the crystal. Methods and for forming such crystals and an apparatus for carrying out the methods are disclosed as well.

A method of identifying semantic units in an electronic document includes the steps of: providing an electronic document being described in a page description language, the document having at least one page having a plurality of text fragments, each text fragment including a plurality of glyphs that have not been identified as semantic units, the document further including geometric information and page description language parameters; determining strips of at least one glyph by comparing the geometric position of subsequent glyphs; determining zones of at least one strip wherein a zone is defined by the combined area of strips, the geometrical areas of which overlap with each other; determining a boundary between two semantic units in a zone based on the geometric properties of the glyphs; sorting the identified semantic units in the zone in a sorted list; and, combining subsequent semantic units in the sorted list according to geometric considerations.

The three dimensional surface shape of a specular reflective object can be determined by examining a captured image reflected from the object. Flat specular reflective surfaces, e.g. a mirror, provide an undistorted reflected image, while curved surfaces reflect a distorted image altered by the surface shape. By analyzing one or more captured images of the distorted reflection, one can estimate the shape of the surface that caused the distortion. A captured distorted image can be compared to a reference undistorted image for which one knows some geometric properties. A system to capture and process such images can be assembled from a few components including a computer to generate and process the images, a display to project the image onto the reflective object, a digital camera to capture the reflected image and a positioning device on which to orient the components with respect to each other.

A subsea connector system is used to connect internally mounted couplers to provide sealed conduits for subsea operations. The system has a removable (outboard) connector and a fixed (inboard) connector each with a housing having special geometric properties that facilitate alignment and connection of the couplers. The latching mechanism has a latch pin in the fixed connector and a latch sleeve in the removable connector for receiving and latching to the latch pin. The couplers (male and female) and the latching mechanism are located within the housings of the fixed and removable connectors to provide protection for the components from damage during storage, handling, transport and installation operations.

A measuring device for measuring geometric properties of a medical treatment device includes a measuring unit, a time detection unit, and an RFID writer. The measuring unit is configured to measure a relative position between at least a first part of the medical treatment device and at least a second part of the medical treatment device. The time detection unit configured to detect a time of the measurement, and the RFID writer configured to write a time, based on the detected time, to an RFID transponder of the medical treatment device.

An optical emitter and an optical sensor are arranged at locations in a scene. A physical mask is arranged between the emitter and sensor to modulate directional electromagnetic signals from the emitter spatially. The modulated signals are analyzed to determine geometric properties at the location in the scene.

A VLSI layout editor and method for using same that increases display and re-display speed and accuracy uses properties inherent to VLSI layouts that allows them to be displayed efficiently and accurately independent of the canonical expression of the VLSI design. The VLSI layout editor and methods for using same use precomputed images that each represent a portion of the VLSI layout, a hierarchy cache that includes multiple LOD versions of selected sub-designs in the pre-computed images, and selected direct determination of the viewable representation from the canonical expression for at least one LOD. Apparatus and methods according to the present invention can render a particular type of data whose canonical form is smaller than its corresponding displayed image thereof when the displayed image has geometric properties that allow heuristics and rasterization for dynamic and accurate expansion using selected combined techniques. Texture mapping and mipmapping can be used to accurately reduce, expand and reorder layers in a viewable image expanded from a canonical expression of the VLSI layout.

Embodiments of the invention may be used to generate an analysis model of a building for use in thermal modeling and other analyses. A method for generating a model for use in determining environmental requirements includes the steps of receiving a computer-aided design (CAD) model of a building design, parsing the CAD model to identify one or more rooms in the building design, and generating a description for each of the one or more rooms. The description of a given room specifies a set of geometric properties describing the given room. The method also includes the steps of determining an environmental requirement of the building design based on the descriptions generated for the one or more rooms and storing the results of the analysis and the determined environmental requirement for review.

A geometric property analyzing system comprises: a format storage unit (9) for storing a predetermined geometric property format; a chart data creating unit (10) for creating chart data based upon the geometric property format; a printing unit (16) for creating a test chart by printing mark groups on a recording medium such as a paper sheet based upon the chart data; an image pickup unit (17) for outputting a chart image by scanning the test chart; a mark center calculating unit (12) for calculating the center of each mark based upon the chart image; and a fitting unit (13) for performing fitting calculation by making comparison between the calculation results output from the mark center calculating unit (12) and the chart based upon the geometric property format such that the squared the difference therebetween becomes minimum for each mark position, whereby the geometric properties are analyzed.

A form of gearing having teeth with different face widths along the tooth height and a method thereof of designing and manufacturing. Different gear tooth face widths are introduced along the tooth height to alter the tooth stiffness characteristic to provide a pair of gears with reduced mesh stiffness variation. The use of variable face widths along the tooth height changes both the geometric properties of the tooth and the load distribution/concentration to reduce the self-excited component of dynamic load, in effect reducing gear noise and increasing power density.

Shape primitives are used for inspection of a semiconductor wafer or other workpiece. The shape primitives can define local topological and geometric properties of a design. One or more rules are applied to the shape primitives. The rules can indicate presence of a defect or the likelihood of a defect being present. A rule execution engine can search for an occurrence of the shape primitives covered by the at least one rule.

An opto-mechanical configuration for direct laser scanned retinal imaging is described. The concept uses simple geometric properties of an ellipse in a reflective optical delivery system which allows a small scanned laser beam to create a two dimensional video image directly on the retina of the human eye. The system is best suited for use in head-mounted display applications where light weight is a priority.

A shape analysis method for analyzing shape data acquired by measuring a contour shape of a workpiece to be measured, includes: deciding a geometric element used in shape analysis; deciding one data point to be included in an evaluation range; applying the geometric element to an interval including the one data point; searching the widest interval for satisfying a threshold condition of a preset shape tolerance while changing a width of the interval; pinpointing two boundary points between which the interval found by the search is sandwiched; obtaining two edge points at which the two boundary points are respectively shifted by preset shift amounts; setting a range sandwiched between the edge points in the evaluation range; and targeting the shape data within the evaluation range for calculation of geometric properties.

A technique for optical measurement of a thickness of a layer on a surface uses diffuse reflections at opposite boundaries of the layer, operates on transparent, or translucent layers. The thickness is determined by computing a separation between the centers of the two diffuse reflections, and using the index of refraction of the layer, and geometric properties of a beam and detector with respect to the surface. The technique is useful for quantifying thickness of a layer of rime ice, glaze ice, frosted ice, or water, for example.

Super-resolution refers to a process of recovering the missing high-frequency details of a given low-resolution image. Known single image SR algorithms are often computationally intractable or unusable for most of the practical applications. The invention relates to a method for performing hierarchical super-resolution based on self content neighboring patches information is based on pyramidal decomposition. The intrinsic geometric property of an input LR patch neighborhood is obtained from the input LR patch and its K nearest neighbors taken from different down-scaled versions of the LR image.

A method for auto-scaling properties of simulated objects includes receiving a metric associated with a reference object. A value associated with a property of a simulated object is adjusted in response to the metric. The value of the property is related to an at-rest shape or desired rest state associated with the simulated object. The property may be a geometric property of the simulated object. Some examples of geometric properties are dimensions (e.g., length, width, height), angle, momentum and rotation, mass, density, and the like. The at-rest shape or desired rest state associated with the simulated object may be related to shape of the simulated object in response to one or more internal forces and expected external forces.

The invention provides a rapid generation method of a five-axis NC tool path of scattered point cloud data. The method is characterized in that a spatial clustered index structure of the scattered point cloud is established firstly, then a data point set of a section of the tool path is rapidly obtained based on the structure, and a normal vector of the data points of the section is determined according to the local differential geometrical properties of, the data points of the section, and tool position points corresponding to the data points of the section are calculated by the space projection method, the tool position point set is sorted by the minimal spanning tree algorithm to generate the tool path, the generated tool path is cut and modeled based on a triangular mesh surface model, the generation precision of the tool path is detected, and the tool path generation parameters are corrected based on the detection result, and finally the five-axis NC tool path meeting the precision requirements is obtained. Examples prove that the method can quickly and efficiently obtain the five-axis NC tool path of the scattered point cloud data, accurately detect the precision of the obtained tool path, and realize rapid profiling manufacture of complex curved surface products.

A technique for optical measurement of a thickness of a layer on a surface uses diffuse reflections at opposite boundaries of the layer, operates on transparent, or translucent layers. The thickness is determined by computing a separation between the centers of the two diffuse reflections, and using the index of refraction of the layer, and geometric properties of a beam and detector with respect to the surface. The technique is useful for quantifying thickness of a layer of rime ice, glaze ice, frosted ice, or water, for example.