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The company Eurimage is interested in resolution improvement methods
August 28, 2002Maria Gonzalez de Audicana, professor of the Public University of Navarre (Basque Country) proposes in her thesis new merging procedures to improve the quality of images used in the discrimination of cultivations.
The company Eurimage is the distributor of satellite images of Europe. The images of the satellites IKONOS and QuickBird, which have been launched recently, have been distributed by this company. They have found interesting the methods presented by Maria Gonzalez de Audicana in her thesis. The new techniques she has published allow to improve the space resolution of multi-spectrum images of the satellites that are used to differ cultivations.
The professor Gonzalez de Audicana has carried out all the researches in the Public University of Navarre. Actually, the research has been done under the supervision of Rafael Garcia Santos, secretary of the Department of Projects and Rural Engineering.
Images to assess natural resources
The thesis of Gonzalez de Audicana is based on the merging of multi-spectrum and panchromatic images. Those images are collected by optic satellites used to assess natural resources. The main conclusion of the research is that the alternative methods that have been developed in this thesis offer images of better quality than the traditional ones.
Those new images have several applications in the area of land use planning: they allow to distinguish different types of cultivations and they can detect water stress situations or cultivations that suffer different illnesses.
The professor Gonzalez de Audicana has compared the well known traditional merging methods with new methods based on mathematic applications (for example, wavelet discrete transformations). In fact she has compared fourteen merging methods: six of them are traditional and the rest are based on wavelet transformations. In total, the thesis proposes three methodological variables and the author has compared all merged images analysing their spectrum and space quality visually and quantitatively.
Elhuyar Fundazioa
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