Advantages of hexagonal sampling grids and hexagonal shape detector elements in remote sensing imagers

Author

Aiazzi, Bruno ; Baronti, Stefano ; Capanni, Annalisa ; Santurri, Leonardo ; Vitulli, Raffaele

Author_Institution

“Nello Carrara” Res. Inst. on Electromagn. Waves, Florence, Italy

fYear

2002

fDate

3-6 Sept. 2002

Firstpage

1

Lastpage

4

Abstract

Recent improvements in CCD technology make hexagonal sampling attractive for such applications as remote sensing where the acquisition process is crucial to preserve image quality without introducing data transmission overheads. In the following hexagonal sampling is analyzed under general assumptions and compared with conventional rectangular sampling. The analysis takes into account both the lattice form (square, rectangular, hexagonal, regular hexagonal), and the shape of the single detector element. The hexagonal grid is not based a-priori on a regular hexagon tessellation, i.e., no constraint is made on the ratio between the sampling frequencies in the two spatial directions.

Keywords

CCD image sensors; CMOS image sensors; charge-coupled devices; data acquisition; digital photography; geophysical equipment; geophysical signal processing; image sampling; lattice networks; remote sensing; CCD technology; charge-coupled device technology; conventional rectangular sampling; data transmission overheads; detector element shape; general hexagonal sampling assumptions; hexagonal sampling analysis; hexagonal sampling grids; hexagonal shape detector elements; image acquisition process; image quality preservation; rectangular lattice form; regular hexagon tessellation; regular hexagonal lattice form; remote sensing imagers; sampling grid advantages; single detector element; square lattice form; Abstracts; Detectors; Image quality; Lattices; Remote sensing; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Conference, 2002 11th European

Conference_Location

Toulouse

ISSN

2219-5491

Type

conf

Filename

7072158