نتایج جستجو برای: spectral spatial information

تعداد نتایج: 1581360  

2004
S. Siachalou

Due to the increasing demand and use of digital spatial information, the interest is being drawn to the generation of digital orthophotos, which is the most accurate and reliable source of spatial information. The subject of this project is the generation of orthoimages as well as the further processing of these orthoimages for the full exploitation of their spectral and spatial information. Th...

2018
Zhan Li Michael Schaefer Alan Strahler Crystal Schaaf David Jupp

The Dual-Wavelength Echidna Lidar (DWEL), a full waveform terrestrial laser scanner (TLS), has been used to scan a variety of forested and agricultural environments. From these scanning campaigns, we summarize the benefits and challenges given by DWEL's novel coaxial dual-wavelength scanning technology, particularly for the three-dimensional (3D) classification of vegetation elements. Simultane...

Due to the differences between the visible and thermal infrared images, combination of these two types of images is essential for better understanding the characteristics of targets and the environment. Thermal infrared images have most importance to distinguish targets from the background based on the radiation differences, which work well in all-weather and day/night conditions also in land s...

2005
A. Greiwe

Many applications of remote sensing – like, for example, urban monitoring – require high resolution data for a correct determination of object geometry. These spatial high resolution image data contain often limited spectral information (e.g. three band RGB orthophotos). This poor spectral information lead often to classification errors between visible similar classes like water, dark pavements...

Journal: :Optics letters 1981
R J Marks Ii M J Smith

Given only a portion of an arbitrary finite-energy [L(2) (-infinity, infinity)] image and a portion of that image's spectrum, we present a closed-form method by which the entire image can be reconstructed. The algorithm is a basic augmentation of a recently proposed iterative restoration algorithm presented by Stark et al. [J. Opt. Soc. Am. 71, 635 (1981); Opt. Lett. 6, 259 (1981)]. Experimenta...

2014
Bharath Bhushan Damodaran Rama Rao Nidamanuri

Hyperspectral image contains fine spectral and spatial resolutions for generating accurate land use and land cover maps. Supervised classification is the one of method used to exploit the information from the hyperspectral image. The traditional supervised classification methods could not be able to overcome the limitations of the hyperspectral image. The multiple classifier system (MCS) has th...

2015
Wei Huang Liang Xiao Hongyi Liu Zhihui Wei

Due to the instrumental and imaging optics limitations, it is difficult to acquire high spatial resolution hyperspectral imagery (HSI). Super-resolution (SR) imagery aims at inferring high quality images of a given scene from degraded versions of the same scene. This paper proposes a novel hyperspectral imagery super-resolution (HSI-SR) method via dictionary learning and spatial-spectral regula...

Journal: :IEEE Trans. Geoscience and Remote Sensing 2012
Qiangqiang Yuan Liangpei Zhang Huanfeng Shen

The amount of noise included in a hyperspectral image limits its application and has a negative impact on hyperspectral image classification, unmixing, target detection, and so on. In hyperspectral images, because the noise intensity in different bands is different, to better suppress the noise in the high-noise-intensity bands and preserve the detailed information in the low-noise-intensity ba...

2012
Ahmed Elsharkawy Mohamed Elhabiby Naser El-Sheimy

Recent advances in satellite and airborne sensors make spatial and multispectral high-resolution imagery effortlessly available. These advances give the chance to address and solve some old problems related to the poor spatial or spectral resolution; such as the lack of details for certain features or the inability of the traditional classifiers to detect some land cover types due to the missin...

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