Browse Prior Art Database

Spatial Temporal Continuums

IP.com Disclosure Number: IPCOM000105156D
Original Publication Date: 1993-Jun-01
Included in the Prior Art Database: 2005-Mar-19
Document File: 2 page(s) / 74K

Publishing Venue

IBM

Related People

Litz, SH: AUTHOR [+2]

Abstract

Disclosed is the object-oriented concept of spatial temporal continuums. Spatial temporal continuums are object-oriented representations that make spatial data appear to the user as being continuous through time even though only a finite number of spatial data of recorded time instants exist. A single spatial temporal continuum is the apparent continuous existence through a time interval of a parameter that varies over a spatial extent. The spatial data may of any spatial dimension, such as maps (two spatial dimensions) or solids (three spatial dimensions)

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Spatial Temporal Continuums

      Disclosed is the object-oriented concept of spatial temporal
continuums.  Spatial temporal continuums are object-oriented
representations that make spatial data appear to the user as being
continuous through time even though only a finite number of spatial
data of recorded time instants exist.  A single spatial temporal
continuum is the apparent continuous existence through a time
interval of a parameter that varies over a spatial extent.  The
spatial data may of any spatial dimension, such as maps (two spatial
dimensions) or solids (three spatial dimensions)

      Internally the data is a time series of spatial datasets with
the same theme, geographic extent, and data representational format.
The points in time that have existing spatial datasets with the time
stamps associated with them, we refer to as "instants" of the spatial
temporal continuum.  For example, a spatial temporal continuum of
vegetation over the United States from 1980 through 1989 might
consist of a set of instants that were derived from satellite images
taken at weekly intervals over the United States from 1980 through
1989 (10 years * 52 maps/year = 520 maps total).  However, to the
user, the continuum appears as continuous vegetation for the entire
10 year period, and the user would be able to access a view of the
data for any day in the ten year period without having to know when
each original satellite image was actually taken.  The associated
Figure graphically depicts the relationship between an internal view
and a user representation.

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