883 results about "Size measurement" patented technology

A method for three-dimensional shape and size measurement of a three-dimensional body surface comprising providing a three-dimensional scanner, providing a processor, providing a three-dimensional Computer Aided Design system, scanning in three dimensions with the three-dimensional scanner at least a portion of the three-dimensional body surface, creating a data file representative of the three-dimensional body surface, processing the data file with the processor, importing the data file into the three-dimensional Computer Aided Design System, employing the three-dimensional Computer Aided Design System relative to the data file to define and record three-dimensional measuring data relative to at least a portion of the three-dimensional body surface, A and employing the three-dimensional Computer Aided Design System to exploit the three-dimensional measuring data.

A method, system, and program are provided for consumer representation rendering with selected merchandise. At least one computing system, in a network or stand-alone environment, accesses a consumer representation, wherein the consumer representation comprises a three dimensional model rendered to depict a consumer appearance and movement in each frame of a captured video stream and specified by a selection of sizing measurements detected from a scan of a consumer body shape. The computing system selects at least one merchandise item from among multiple merchandise items each with separate merchandise characteristics. In particular, the computing system selects the merchandise item of a size selected to fit the selection of sizing measurements for the consumer. The computing system renders the merchandise item on each rendered frame of the three dimensional model according to the merchandise characteristics as applied to the sizing measurements, wherein a display of the rendered three dimensional model shows a realistic image of the consumer appearance and movement as captured in the video stream rendering the consumer wearing the selected merchandise item.

An apparatus, system, method, and computer readable medium containing computer-executable code for implementing image analysis uses multivariate statistical analysis of sample images, and allows segmentation of the image into different groups or classes, depending on a correlation to one or more sample textures, or sample surface features. In one embodiment, the invention performs multivariate statistical analysis of ultrasound images, wherein a tumor may be characterized by segmenting viable tissue from necrotic tissue, allowing for more detailed in vivo analysis of tumor growth beyond simple dimensional measurements or univariate statistical analysis. Application of the apparatus and method may also be used for characterizing other types of samples having textured features including, for example, tumor angiogenesis biomarkers from Power Doppler.

The invention discloses a distance measuring method applying a binocular visual parallax error distance-measuring principle. By means of adopting different base length to adapt to requirements on measurement accuracy of different distance measuring ranges, the distance measuring method is applicable to precise size measurement for short distance and small parts. On the basis of a conventional binocular measuring method, a pair of cameras which are provided with parallel optical axes and positioned side by side are adopted to make two random to-be-measured visualized points in two images into a plane vertical to the two optical axes, depth values of the two to-be-measured points are obtained via a inversely proportional relationship between binocular visual parallax error and depth, distances from the two to-be-measured points to an optic center and angles among the two to-be-measured points and an optical center connection line can be determined according to the depth value of the to-be-measured points and focal length of the cameras, and then the actual distance between the two points can be determined via the cosine law. Compared with conventional methods, the distance measuring method applying the binocular visual parallax error distance-measuring principle has the advantages of simplicity in operation, strong practicability, high precision and easiness in popularization and use.

The invention discloses a camera on-field calibration method in a measuring system, belonging to the field of computer vision detection, in particular to an on-field calibration method for solving inside and outside parameters of cameras in a large forgeable piece size measuring system. Two cameras and one projector are provided in the measuring system. The calibration method comprises the following steps of: manufacturing inside and outside parameter calibration targets of the cameras; projecting inside parameter targets and shooting images; extracting image characteristic points of the images through an image processing algorithm in Matlab; writing out an equation to solve the inside parameters of the cameras; processing the images shot simultaneously by the left camera and the right camera; and measuring the actual distance of the circle center of the target by using a left theodolite and a right theodolite, solving a scale factor and further solving the actual outside parameters. The invention has stronger on-field adaptability, overcomes the influence of impermeable and illegible images caused by the condition that a filter plate filters infrared light in a large forgeable piece binocular vision measuring system by adopting the projector to project the targets, and is suitable for occasions with large scene and complex background.

A method and apparatus for making a size measurement within an intervertebral space by placing an expandable and contractible device into the intervertebral space, expanding the device, measuring a size characteristic of the space, contracting the device and then removing it. The measurement may be accomplished by an external x-ray or other imaging device imaging the expanded device in situ or by mechanically operated devices. An expansion and contraction mechanism such as fluid containing bladder or mechanically shifted members expands the device which later contracts in a controlled manner to the contracted size. An apparatus and method is provided for the measuring of the intervertebral space at a controlled distraction force. The apparatus includes an expandable device for providing a measurement within the intervertebral space and facilitating the measurement of the angulations of the lordotic curve of the intervertebral space.

The present invention relates to a method for improving the efficiency of dimensional acquisition of an object by a dimensional measurement device directed over the object, comprising the steps: a) directing the measurement device over the object to acquire its dimensions, b) providing an indication of the resolution of the acquired regions, c) re-directing the measurement device over at least part of the acquired regions indicating insufficient resolution according to predetermined criteria, d) updating the indication of the resolution of the acquired regions, and e) repeating steps c) and d) until sufficient resolution is indicated according to the predetermined criteria, thereby efficiently acquiring the dimensions of the object at sufficient resolution. It also relates to a computer program therefor.

Radar apparatus and methods of use thereof for imaging and/or spectrometric analysis. The invention employs pulsed radar signals for magnifying, imaging, scale measuring, identifying and/or typecasting the composition of substances by radargrammetric imaging and/or statistical analysis of energy/frequency spectrums. The invention may be used to locate and/or distinguish a substance from other substances, to image a substance/feature and to monitor the movement of an imaged substance/feature. The systems and methods can be adapted for a variety of applications at a wide range of scales and distances, from large scale, long range applications such as geophysical imaging/analysis, to the small scale such as material typecasting applications and small scale (including microscopic) imaging/analysis, including biological and medical imaging and diagnostic applications. The invention includes novel antenna assemblies and novel data processing techniques.

The invention belongs to the field of nondestructive detection, and particularly relates to a power station thick-walled pipeline ultrasonic guided wave detecting method, wherein the method comprises the following steps of: selecting an ultrasonic guided wave detecting probe; selecting an ultrasonic guided wave detecting instrument; manufacturing a sensitivity test block; making a distance-amplitude curve; scanning; carrying out flaw size measurement; and verifying and grading detecting results. The detecting method is suitable for comprehensively detecting the flaws of pipelines with different pipe diameters and thicknesses, and is particularly suitable for comprehensively detecting power station thick-walled pipelines. The detecting method has the characteristics of rapidness, simpleness, safety and reliability, can overcome some limitations of a conventional nondestructive detection method, lowers the manual detection intensity and saves human and material resources.

One of principal objects of the present invention is to provide a sample dimension measuring method for detecting the position of an edge of a two-dimensional pattern constantly with the same accuracy irrespective of the direction of the edge and a sample dimension measuring apparatus. According to this invention, to accomplish the above object, it is proposed to correct the change of a signal waveform of secondary electrons which depends on the direction of scanning of an electron beam relative to the direction of a pattern edge of an inspection objective pattern. It is proposed that when changing the scanning direction of the electron beam in compliance with the direction of a pattern to be measured, errors in the scanning direction and the scanning position are corrected. In this configuration, a sufficient accuracy of edge detection can be obtained irrespective of the scanning direction of the electron beam.

The invention provides a part size measurement method based on a charge coupled device (CCD). According to the part size measurement method, feature point recognition technology is adopted, pixels are classified through feature points of a part, the size of the whole part is measured, prior knowledge of the part is not required, and measurement for the common part is achieved. According to the method, high-speed measurement is conducted, and meanwhile a precision requirement is met. The part size measurement method based on the CCD is simple in algorithm, low in cost and good in application prospect due to the facts that only the CCD and a computer are required for hardware implementation and a complex mechanical structure is not required.

In a wireless communication network having remote receivers (subscriber units) communicating through base units in a service area, each of the base units servicing a cell area encompasses one or more identifiable zones which can be occupied by receivers. According to the invention, at least one measure of the spatial size of the cell is reported to a receiver communicating with a base station, for use in location specific applications. The measure can be a size category, an average diameter or another measure, such as a shape and orientation of the cell, a boundary apex, and a boundary line of the cell. The base station coordinates are conventionally available to the receiver. By providing a measure of size, the receiver can resolve its zone or location to a coarse or low level of resolution. The zone occupied by the receiver is at least within the cell and the size of the cell and location of the base station are now known. According to additional embodiments, the resolved zone known to be occupied by the receiver is refined to an area within the defined cell area. The size of the cell or service area of the location transmitter can be appended to the identification code of the base station. Reporting the cell size and location is sufficient to facilitate some location applications in the receiver, and can reduce or eliminate reliance on satellite and other positioning systems, particularly if the zone initially defined as the cell size is resolved further, for example using time-of-arrival, power level, angular bearing and similar techniques.

The invention discloses an object size measurement method. A calibration object is placed near a target object, pixel sizes of the target object and the calibration object are calculated, the actual size of the target object is calculated, no measurement tool is needed, and the external size of a general object can be quickly and accurately measured. Meanwhile, the invention also discloses an image database data acquisition method based on the object size measurement method. When a database comprising a target object image sample and the size of the target object is built, automatic database construction can be realized, that is, the target object image sample and the size can be obtained at the same time at one time through photographing, corresponding database construction is realized, and compared with manual recording, the method of the invention is labor-saving and time-saving, and is less error-prone.

The invention discloses a large-size measuring experimental apparatus for air flow in a cabin based on PIV. The apparatus comprises a large-power dipulse laser system, a particle image shooting system, a synchronizing controller, a tracer particle fog generator and a computer. In the process of measurement, a light sheet lens assembly is used to adjust the waist of a laser light sheet to allow the waist to be located in a measurement subregion; and a camera guide rail is used to control the measurement position of a high-resolution CCD camera. Tracer particle fog is released into a measurement cabin model; the synchronising controller is used to regulate and control the large-power dipulse laser system and the high-resolution CCD camera so as to obtain a double-frame tracer particle image at every moment; computer analysis software is used for self-adaption cross-correlation processing of the image so as to obtain information about an instantaneous flow field at every moment; time averaging is carried out on the instantaneous flow field at every moment so as to obtain a time-averaged flow field; and the time-averaged flow fields in all the measurement subregions are spliced together so as to obtain integral high-resolution time-averaged flow field data of a large-size cross section in the cabin, and the data is used for flow field characteristic analysis and verification of numerical calculation results.