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630 results about "Index method" patented technology

Index method. Definition. The appraisal method of estimating building costs by multiplying the original cost of the property by a percentage factor to adjust for current construction costs.

Method of storing and retrieving multi-dimensional data using the hilbert curve

An improved method of partitioning and indexing multi-dimensional data that maps the data to one-dimensional values according to the sequence in which an approximation of a Hilbert space-filling curve passes through all of the points corresponding to potential multi-dimensional data in a data space. Data is partitioned into pages, each corresponding to a length of Hilbert curve. A page identifier is the sequence of the first point on its corresponding Hilbert curve section. The mapping orders data and also orders the data pages that contain data within a database. Mapping multi-dimensional data to one-dimensional values enables the data to be indexed using any one-dimensional index structure. The practical application of the indexing method is made viable and useful by the provision of a querying algorithm enabling data to be selectively retrieved in response to queries wherein all or some of the data that lies within a rectangular space within multi-dimensional space is required to be retrieved. The querying algorithm identifies pages whose corresponding curve sections intersect with a query region. The first intersecting page is found by calculating the lowest one-dimensional value corresponding to a possible multi-dimensional data value or point within the query region, and looking up in the index to find which page may contain this point. The next intersecting page, if it exists, is found by calculating the lowest one-dimensional value equal to or greater than the identifier of the next page to the one just identified. This new lowest one-dimensional, if found, is used to look up in the index and find the next page intersecting with the query region. Subsequent pages to be found, if any, are determined in a similar manner until no more are found. Pages found to intersect the query region can be searched for data lying within the query region.
Owner:LAWDER JONATHAN KEIR

Panoramic movie which utilizes a series of captured panoramic images to display movement as observed by a viewer looking in a selected direction

Movement through multi-dimensional space is simulated using a series of panoramic images which are projected or displayed in sequence. The user's direction of view, that is the selected view window, is maintained as the series of images is projected or displayed. Motion in directions other than forward or reverse is simulated by utilizing "branch" points in the sequence. Each path from a branch point simulates motion in a different direction. Branch points are generally indicated to a viewer by visual indicators called "hot spots"; however, branch points may also be hidden and activated in response to the viewer's selected direction of view. If a branch point is indicated by a visual indicator, a user can select motion in a desired direction by clicking on a "hot spot".In order to conserve storage space, the image representing each panorama can be stored in a compressed format. Only the portion of the panorama necessary to create a "view window" that is, the portion of the image displayed in response to the user's direction of view, is decompressed at view time. An index methodology is used to store the panoramic images. Use of the indexing methodology allows the images to be retrieved in both the forward and backward direction to simulate movement in either direction. Sound is provided in a special format, so that special effects can be provided based on the user's point of view and dependent upon the direction of motion selected by the user.
Owner:IMMERSIVE LICENSING

Multiple sampling via a time-indexed method to achieve wide dynamic ranges

An architecture for a digital pixel sensor is disclosed in which the dynamic range of the sensor is increased by taking samples of a subject to be recorded, where each sample is taken over an interval of a different duration than the other samples. In the preferred embodiment of the invention, an array of pixel elements is fabricated in an integrated circuit. Each of the pixel elements outputs a digital signal and comprises a photodetector and an analog to digital converter. The photodetector is integrated with the analog to digital converter. An array of threshold memory cells, each corresponding to one of the pixel elements, is also provided. An array of time memory cells, each corresponding to one of the pixel elements, establishes a different sampling time for each of the pixel elements for each of multiple samples. An array of memory elements, each coupled to one of the pixel elements, is also provided. The memory elements are also fabricated in the integrated circuit. The memory elements only receive a value from a corresponding one of the pixel elements when the content in a corresponding one of the threshold memory cells permits. In this way, multiple samples may be collected for a subject to be recorded to thereby extend the dynamic range of a photodetector. Integration of the photodetector and the memory that implements this mechanism into the same integrated circuit avoids the latency that would be experienced if an external memory was used.
Owner:PIXIM

Panoramic movie which utilizes a series of captured panoramic images to display movement as observed by a viewer looking in a selected direction

Movement through multi-dimensional space is simulated using a series of panoramic images which are projected or displayed in sequence. The user's direction of view, that is the selected view window, is maintained as the series of images is projected or displayed. Motion in directions other than forward or reverse is simulated by utilizing "branch" points in the sequence. Each path from a branch point simulates motion in a different direction. Branch points are generally indicated to a viewer by visual indicators called "hot spots"; however, branch points may also be hidden and activated in response to the viewer's selected direction of view. If a branch point is indicated by a visual indicator, a user can select motion in a desired direction by clicking on a "hot spot". In order to conserve storage space, the image representing each panorama can be stored in a compressed format. Only the portion of the panorama necessary to create a "view window" that is, the portion of the image displayed in response to the user's direction of view, is decompressed at view time. An index methodology is used to store the panoramic images. Use of the indexing methodology allows the images to be retrieved in both the forward and backward direction to simulate movement in either direction. Sound is provided in a special format, so that special effects can be provided based on the user's point of view and dependent upon the direction of motion selected by the user.
Owner:IMMERSIVE LICENSING

A method for rapid detection of the content of index components in traditional Chinese medicinal materials by using near-infrared spectroscopy

InactiveCN102288572AEnables rapid detection of issues with comprehensive qualityHigh speedColor/spectral properties measurementsReflectance spectroscopyAdditive ingredient
The invention relates to a method for rapidly detecting the content of index components of Chinese medicinal materials by using near-infrared spectroscopy technology, which can realize the rapid detection of the comprehensive quality of Chinese medicinal materials. Collect the sample, collect the near-infrared diffuse reflectance spectrum of the sample, and preprocess the obtained spectrum, then use the detection method corresponding to the sample in the conventional method to measure the content of its index components, and combine the spectrum with the content of the index components, The quantitative analysis model is established by adopting the chemometrics method suitable for the analysis of the components of traditional Chinese medicine, the sample to be tested is crushed, and its near-infrared spectrum is scanned, and the spectrum is input into the quantitative analysis model to measure the content of the index components in the Chinese medicinal material. The whole process takes a short time, is fast and accurate, can be measured online, improves production efficiency, greatly saves manpower and material resources, and can generate huge economic and social benefits.
Owner:HENAN UNIV OF CHINESE MEDICINE

MDDRQ-Tree index structure for network multidimensional space data expression

InactiveCN101923542AFast and efficient releaseSupport releases quickly and efficientlySpecial data processing applicationsNetwork conditionsSpace object
The invention aims at the problem that a traditional data structure cannot support the network multidimensional space data expression and provides a MDDRQ-Tree index structure for the network multidimensional space data expression. The MDDRQ-Tree index structure is characterized in that: (1) a primary tree is transformed from an area quadtree index structure divided through a rule of a pyramid hierarchy structure, (2) an overlapping sub-tree structure for supporting the multidimensional data is provided, (3) the change of spatial resolution is reflected by the depth of the tree, and (4) all the nodes of the tree are space object carriers. The invention organically integrates the multidimensional space data such as frequently-used vector data, gridded data, process data, three-dimensional landscape map data, and the like. In the manner of data organization, scheduling and searching fit for the network conditions, the invention can efficiently and rapidly support the web publishing of the multidimensional data for mass data. Compared with the traditional method, the index method of the invention can efficiently express and search the scale of the mass multidimensional data. The more the data volume is, the more obvious the promoted efficiency is.
Owner:IMMERSION ENVIRONMENT SHANGHAI

Remote sensing assessment method and system for ecosystem vulnerability

The invention relates to a remote sensing assessment method and system for ecosystem vulnerability. The method comprises the steps of performing ecosystem vulnerability zoning in a target area range, determining ecosystem vulnerability assessment indexes of different zones according to the zoning result, establishing a corresponding ecosystem vulnerability assessment system in each zone, determining the weights of the ecosystem vulnerability assessment indexes in the different zones by using a hierarchical analysis method, and establishing an ecosystem vulnerability remote sensing assessment model based on a comprehensive index method to assess the ecosystem vulnerability. According to the method, a reasonable ecological environment zoning scheme is formed in the target area range, and a scientific and normative ecosystem vulnerability assessment system, a weight assignment scheme and an assessment model are respectively constructed according to the ecological environment characteristics of the zones to realize intelligent remote sensing assessment of the ecosystem vulnerability, so that the assessment result is accurate and reliable and repeated operation can be implemented.
Owner:INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI

LSH (Locality Sensitive Hashing)-based clustering and indexing method and LSH-based clustering and indexing system

ActiveCN103631928AEvenly distributed dataReduce matching performance instabilityRelational databasesSpecial data processing applicationsData setRelative stability
The invention relates to an LSH (Locality Sensitive Hashing)-based clustering and indexing method and an LSH-based clustering and indexing system. The LSH-based clustering and indexing method comprises the steps of step 1, carrying out clustering analysis on a data set, dividing the data set into a plurality of categories, and determining and ensuring a clustering center of each category; step 2, establishing a hashing table in each category by adopting an LSH method; step 3, calculating Euclidean distance between each clustering center and a query point, and selecting multiple categories in minimum Euclidean distances as candidate categories; step 4, calculating a hashing value of the query point in each candidate category, and selecting data points of which the hashing values are the same as that of the query point in the candidate categories as candidate points according to the hashing table established in step 2; step 5, calculating the Euclidean distances between the candidate points and the query point, and taking the candidate point in minimum Euclidean distance as a nearest adjacent point to the query point. According to the LSH-based clustering and indexing method and the LSH-based clustering and indexing system, disclosed by the invention, great increasing of query efficiency and relative stability of query performance can be obtained under the situation of less sacrificing the accuracy rate.
Owner:INST OF INFORMATION ENG CHINESE ACAD OF SCI
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