Nikos Stratis - Academia.edu (original) (raw)

Papers by Nikos Stratis

Research paper thumbnail of Object-based classification using Quickbird imagery for delineating forest vegetation polygons in a Mediterranean test site

Isprs Journal of Photogrammetry and Remote Sensing, 2008

... relatively little geometric distortion (Zhou and Li, 2000) in comparison to airborne ... Seve... more ... relatively little geometric distortion (Zhou and Li, 2000) in comparison to airborne ... Several trigonometric points, identified on the panchromatic image, presented an RMS error of ... Additionally, two widespread vegetation indices, that of NDVI (Infrared-Red/Infrared + Red), (Tucker ...

Research paper thumbnail of The excess of Hadamard matrices and optimal designs

Discrete Mathematics, 1987

Hadamard matrices of order n with maximum excess o(n) are constructed for n = 40, 44, 48, 52, 80,... more Hadamard matrices of order n with maximum excess o(n) are constructed for n = 40, 44, 48, 52, 80, 84. The results are: o(40)= 244, o(44)= 280, o(48)= 324, o(52)= 364, o(80)= 704, 0(84) = 756. A table is presented listing the known values of o(n) 0< n ~< 100 and the corresponding Hadamard matrices are constructed. For the remaining values of n = 56, 60, 68, 72, 76, 88, 92, 96 the largest values achieved for the excess are also given.

Research paper thumbnail of Assessing the information content of Landsat5 Thematic Mapper data for mapping and characterizing fire scars

Research paper thumbnail of Tης Aικατερίνης KKυμαριαννύ

Research paper thumbnail of Object-based classification using Quickbird imagery for delineating forest vegetation polygons in a Mediterranean test site

Isprs Journal of Photogrammetry and Remote Sensing, 2008

... relatively little geometric distortion (Zhou and Li, 2000) in comparison to airborne ... Seve... more ... relatively little geometric distortion (Zhou and Li, 2000) in comparison to airborne ... Several trigonometric points, identified on the panchromatic image, presented an RMS error of ... Additionally, two widespread vegetation indices, that of NDVI (Infrared-Red/Infrared + Red), (Tucker ...

Research paper thumbnail of The excess of Hadamard matrices and optimal designs

Discrete Mathematics, 1987

Hadamard matrices of order n with maximum excess o(n) are constructed for n = 40, 44, 48, 52, 80,... more Hadamard matrices of order n with maximum excess o(n) are constructed for n = 40, 44, 48, 52, 80, 84. The results are: o(40)= 244, o(44)= 280, o(48)= 324, o(52)= 364, o(80)= 704, 0(84) = 756. A table is presented listing the known values of o(n) 0< n ~< 100 and the corresponding Hadamard matrices are constructed. For the remaining values of n = 56, 60, 68, 72, 76, 88, 92, 96 the largest values achieved for the excess are also given.

Research paper thumbnail of Assessing the information content of Landsat5 Thematic Mapper data for mapping and characterizing fire scars

Research paper thumbnail of Tης Aικατερίνης KKυμαριαννύ