Skip to Main content Skip to Navigation
Theses

Fusion de données : prise en compte des caractéristiques liées à l'imageur lors de la synthèse d'images multispectrales à haute résolution spatiale

Abstract : Earth observation satellites (Quickbird, Ikonos, SPOT-5, PLÉIADES) provide two types of images: the panchromatic image at high spatial resolution with a poor spectral resolution, and the multispectral image with a good spectral resolution but at a spatial resolution 2 or 4 times lower than each of the panchromatic. Image fusion methods for this to types of images already exist, whereas we still can add/provide amelioration that aim to improve the quality of synthesized images. My work look for improving the quality of synthesized images thanks to a better consideration of the sensor characteristics like the Modulation Function Transfer (MTF), and the sampling. The work on the evaluation of the effect of the aliasing of the MS on the synthesized MS show that the suppression of aliasing suppress visual artifact but it reveal that it not significant with actual quality analysis. MTF express the sensor capacities to represent a contrast in function of the spatial frequency. Based on an existing method we proposed two new methods that allowed to better take into account the MTF difference that exist between PAN and MS images. Two new methods had been proposed that are based on existing method and allowed to better take into which take into account the difference of MTF between PAN and MS images.
Complete list of metadatas

Cited literature [83 references]  Display  Hide  Download

https://pastel.archives-ouvertes.fr/pastel-00564814
Contributor : Magalie Prudon <>
Submitted on : Thursday, February 10, 2011 - 10:01:35 AM
Last modification on : Wednesday, October 14, 2020 - 4:02:45 AM
Long-term archiving on: : Tuesday, November 6, 2012 - 1:46:34 PM

Identifiers

  • HAL Id : pastel-00564814, version 1

Citation

Pierre Massip. Fusion de données : prise en compte des caractéristiques liées à l'imageur lors de la synthèse d'images multispectrales à haute résolution spatiale. Traitement du signal et de l'image [eess.SP]. École Nationale Supérieure des Mines de Paris, 2010. Français. ⟨NNT : 2010ENMP0038⟩. ⟨pastel-00564814⟩

Share

Metrics

Record views

743

Files downloads

2084