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» A Geometric Foundation of Colorimetry
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IMAGING
2001
14 years 8 days ago
A Geometric Foundation of Colorimetry
The physical properties of color are usually described by their spectra, eigenvector expansions or low-dimensional descriptors such as RGB or CIE-Lab. In the first part of the pap...
Reiner Lenz
SSD
1993
Springer
152views Database» more  SSD 1993»
14 years 3 months ago
Realms: A Foundation for Spatial Data Types in Database Systems
: Spatial data types or algebras for database systems should (i) be fully general (which means, closed under set operations, hence e.g. a region value can be a set of polygons with...
Ralf Hartmut Güting, Markus Schneider
ECIR
2011
Springer
13 years 2 months ago
Towards Quantum-Based DB+IR Processing Based on the Principle of Polyrepresentation
The cognitively motivated principle of polyrepresentation still lacks a theoretical foundation in IR. In this work, we discuss two competing polyrepresentation frameworks that are ...
David Zellhöfer, Ingo Frommholz, Ingo Schmitt...
GIS
2010
ACM
13 years 9 months ago
Tolerance geometry: Euclid's first postulate for points and lines with extension
Object representation and reasoning in vector based geographic information systems (GIS) is based on Euclidean geometry. Euclidean geometry is built upon Euclid's first postu...
Gwen Wilke, Andrew U. Frank
SAC
2010
ACM
13 years 5 months ago
Similar triangles and orientation in plane elementary geometry for Coq-based proofs
In plane elementary geometry, the concept of similar triangles not only forms an important foundation for trigonometry, but it also can be used to solve many geometric problems. T...
Tuan Minh Pham