نتایج جستجو برای: quickbird

تعداد نتایج: 789  

Journal: :Remote Sensing 2022

Pansharpening fuses spectral information from the multi-spectral image and spatial panchromatic image, generating super-resolution images with high resolution. In this paper, we proposed a novel 3D multi-scale attention convolutional network (MSAC-Net) based on typical U-Net framework for imagery pansharpening. MSAC-Net is designed via convolution, mechanism replaces skip connection between con...

Journal: :Remote Sensing 2009
Gregory A. Carter Kelly L. Lucas Gabriel A. Blossom Cheryl L. Lassitter Dan M. Holiday David S. Mooneyhan Danielle R. Fastring Tracy R. Holcombe Jerry A. Griffith

Tamarisk (Tamarix spp., saltcedar) is a well-known invasive phreatophyte introduced from Asia to North America in the 1800s. This report compares the efficacy of Landsat 5 Thematic Mapper (TM5), QuickBird (QB) and EO-1 Hyperion data in discriminating tamarisk populations near De Beque, Colorado, USA. As a result of highly correlated reflectance among the spectral bands provided by each sensor, ...

2007
Javier González Cipriano Galindo Vicente Arévalo Gregorio Ambrosio

This paper proposes a method, that integrates image analysis and probabilistic techniques, for counting olive trees in high-resolution satellite images. Counting trees becomes significant for surveying and inventorying forests, and in certain cases relevant for assessing estimates of the production of plantations, as it is the case of the olive trees fields. The method presented in this paper e...

2010
T. Santos S. Freire A. Navarro F. Soares J. Dinis N. Afonso A. Fonseca J. A. Tenedório

The methodology is based on semi-automatic extraction of features, using information from a QuickBird image and LIDAR data. The QuickBird image is suitable to delineate the different elements on the surface based on their spectral characteristics. However, this task is much more successful and richer when altimetric information is also used in the extraction process. Thus, with the introduction...

2005
Matthieu Molinier Jorma Laaksonen Jussi Ahola Tuomas Häme

Self-Organizing Maps (SOMs) have been successfully applied to content-based image retrieval (CBIR). In this study, we investigate the potential of PicSOM, an image database browsing system, applied to remote sensing images. Databases of small images were artificially created, either from a single satellite image for object detection, or two satellite images when considering change detection. By...

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