ISO/TS 19129:2009 地理情報—画像、グリッド、カバレッジデータフレームワーク | ページ 6

4.1.1

application schema

conceptual schema for data required by one or more applications

[SOURCE:ISO 19101:2002]

4.1.2

content model

information view of an application schema

Note 1 to entry: The term “information view” comes from the ISO Reference Model for Open Distributed Processing (RM-ODP), as specified in 19101-2.

4.1.3

continuous coverage

coverage that returns different values for the same feature attribute at different direct positions within a single spatial object, temporal object, or spatiotemporal object in its domain

[SOURCE:ISO 19123:2005]

Note 1 to entry: Although the spatiotemporal domain of a continuous coverage is ordinarily bounded in terms of its spatial extent, it can be subdivided into an infinite number of direct positions .

4.1.4

coordinate

one of a sequence of n -numbers designating the position of a point in n -dimensional space

[SOURCE:ISO 19111:2007]

Note 1 to entry: In a coordinate reference system , the numbers must be qualified by units.

4.1.5

coordinate reference system

coordinate system that is related to an object by a datum

[SOURCE:ISO 19111:2007]

Note 1 to entry: For geodetic and vertical datums it will be related to the Earth.

4.1.6

coverage

feature that acts as a function to return values from its range for any direct position within its spatial, temporal or spatiotemporal domain

[SOURCE:ISO 19123:2005]

4.1.7

data compaction

reduction of the number of data elements, bandwidth, cost, and time for the generation, transmission, and storage of data without loss of information by eliminating unnecessary redundancy, removing irrelevancy, or using special coding

[SOURCE:ANSI T1.523-2001]

Note 1 to entry: Whereas data compaction reduces the amount of data used to represent a given amount of information, data compression does not.

Note 2 to entry: Data compaction can be done through aggregation of like values in adjacent grid cells, tiling schemes or other means of eliminating information that is not relevant.

4.1.8

data compression

reducing either the amount of storage space required to store a given amount of data, or the length of message required to transfer a given amount of information

Note 1 to entry: Adapted from ANSI T1.523-2001.

Note 2 to entry: Data compression is probabilistic in nature based on particular instances of imagery, gridded or coverage data and is related to encoding and is outside the scope of this Technical Specification.

4.1.9

data interchange

delivery, receipt and interpretation of data

[SOURCE:ISO 19118:2005]

4.1.10

dataset

identifiable collection of data

[SOURCE:ISO 19115:2003]

4.1.11

direct position

position described by a single set of coordinates within a coordinate reference system

[SOURCE:ISO 19107:2003]

4.1.12

discrete coverage

coverage that returns the same feature attribute values for every direct position within any single spatial object, temporal object, or spatiotemporal object in its domain

[SOURCE:ISO 19123:2005]

Note 1 to entry: The spatiotemporal domain of a discrete coverage consists of a finite set of geometric objects.

4.1.13

domain

well-defined set

[SOURCE:ISO/TS 19103:32005]

Note 1 to entry: Domains are used to define the domain set and range set of attributes, operators and functions .

4.1.14

encoding

conversion of data into a series of codes

[SOURCE:ISO 19118:2005]

4.1.15

encoding rule

identifiable collection of conversion rules that define the encoding for a particular data structure

[SOURCE:ISO 19118:2005]

4.1.16

feature

abstraction of real world phenomena

[SOURCE:ISO 19101:2002]

Note 1 to entry: A feature may occur as a type or an instance. Feature type or feature instance should be used when only one is meant.

4.1.17

framework

relationship between the elements of the content model and the separate encoding and portrayal mechanisms

4.1.18

function

rule that associates each element from a domain (source, or domain of the function) to a unique element in another domain (target, co-domain, or range )

[SOURCE:ISO 19107:2003]

4.1.19

geographic information

information concerning phenomena implicitly or explicitly associated with a location relative to the Earth

[SOURCE:ISO 19101:2002]

4.1.20

grid

network composed of two or more sets of curves in which the members of each set intersect the members of the other sets in an algorithmic way

[SOURCE:ISO 19123:2005]

Note 1 to entry: The curves partition a space into grid cells.

4.1.21

grid coordinates

sequence of two or more numbers specifying a position with respect to its location on a grid

[SOURCE:ISO 19115-2:2009]

4.1.22

grid point

point located at the intersection of two or more curves in a grid

[SOURCE:ISO 19123:2005]

4.1.23

gridded data

data whose attribute values are associated with positions on a grid coordinate system

[SOURCE:ISO 19115-2:2009]

4.1.24

imagery

representation of phenomena as images produced by electronic and/or optical techniques

Note 1 to entry: The term imagery is often used colloquially with various meanings in different contexts. It is often used to describe any set of gridded, point set or other form of coverage data that can be portrayed. This is not a very useful concept because virtually any set of data can be portrayed in some manner. A more precise meaning is given in ISO/TS 19101-2.

[SOURCE:ISO/TS 19101-2:2008]

4.1.25

matrix

rectangular array of numbers

Note 1 to entry: A matrix is a mathematical term.

4.1.26

metadata

data about data

[SOURCE:ISO 19115:2003]

4.1.27

pixel

smallest element of a digital image to which attributes are assigned

Note 1 to entry: This term originated as a contraction of “picture element”.

Note 2 to entry: Related to the concept of a grid cell.

[SOURCE:ISO/TS 19101-2:2008]

4.1.28

point

0-dimensional geometric primitive, representing a position

[SOURCE:ISO 19107:2003]

Note 1 to entry: The boundary of a point is the empty set.

4.1.29

point coverage

coverage that has a domain composed of points

[SOURCE:ISO 19123:2005]

4.1.30

quality

totality of characteristics of a product that bear on its ability to satisfy stated and implied needs

[SOURCE:ISO 19101:2002]

4.1.31

range

set of feature attribute values associated by a function with the elements of the domain of a coverage

[SOURCE:ISO 19123:2005]

4.1.32

raster

usually rectangular pattern of parallel scanning lines forming or corresponding to the display on a cathode ray tube

[SOURCE:ISO 19123:2005]

Note 1 to entry: A raster is a type of grid .

Note 2 to entry: The term “raster data” is often used colloquially in the field of geographic information to identify the whole class of data where the spatial geometry is organized into a grid. A description of what is meant by “raster data” is given in ISO 19123 and the more comprehensive concept of a coverage is described.

4.1.33

service

distinct part of the functionality that is provided by an entity through interfaces

[SOURCE:ISO/TR 14252:1996]

4.1.34

spatiotemporal domain

〈coverage〉

domain composed of spatiotemporal objects

[SOURCE:ISO 19123:2005]

Note 1 to entry: The spatiotemporal domain of a continuous coverage consists of a set of direct positions defined in relation to a collection of spatiotemporal objects.

4.1.35

spatiotemporal object

object representing a set of direct positions in space and time

[SOURCE:ISO 19123:2005]

4.1.36

surface

2-dimensional geometric primitive, locally representing a continuous image of a region of a plane

[SOURCE:ISO 19107:2003]

4.1.37

tessellation

partitioning of a space into a set of conterminous subspaces having the same dimension as the space being partitioned

[SOURCE:ISO 19123:2005]

Note 1 to entry: A tessellation composed of congruent regular polygons or polyhedra is a regular tessellation; one composed of regular, but non-congruent polygons or polyhedra is semi-regular. Otherwise, the tessellation is irregular.

4.1.38

traversal order

sequence in which the cells of a grid are enumerated

4.1.39

UML template

parameterized model element that describes or identifies the pattern for a group of model elements of a particular type

[SOURCE:IBM Rational System Developer]