نتایج جستجو برای: Worldview-2

تعداد نتایج: 2528007  

2012
Martina L. Hobi Christian Ginzler

Digital surface models (DSMs) are widely used in forest science to model the forest canopy. Stereo pairs of very high resolution satellite and digital aerial images are relatively new and their absolute accuracy for DSM generation is largely unknown. For an assessment of these input data two DSMs based on a WorldView-2 stereo pair and a ADS80 DSM were generated with photogrammetric instruments....

2011
Philip Cheng

The successful operation of the WorldView-1and 2 satellites have enabled advanced high-accuracy mapping using high-resolution satellite images, with and without the use of ground control points (GCPs). The stereo capability of the WorldView sensor also provides the opportunity to extract high-resolution digital elevation models (DEMs). In this paper we will examine the following areas: (1) Each...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده کشاورزی 1392

این تحقیق به منظور یافتن یک روش دقیق و سریع برای پایش مدیریت بقایا و شدت خاک ورزی انجام شد. در این مطالعه توانایی تصاویر سنجنده های worldview-2 و modis برای تخمین درصد پوشش بقایا در سطح خاک و پایش شدت خاک ورزی و مزارع آتش زده شده با استفاده از شاخص های طیفی و آنالیز جداسازی طیفی خطی مورد ارزیابی قرار گرفت. بدین منظور همبستگی درصد پوشش بقایا که با دو روش خط مورب و پردازش تصاویر دیجیتالی در پلات ...

2010
Philip Cheng Chuck Chaapel

On October 8, 2009, WorldView-2 joined its sister satellites, WorldView-1 and QuickBird, in orbit. WorldView-2 is a remote-sensing satellite principally used to capture high-resolution images of the earth. The images provided by the satellite can be used for applications such as mapping, land planning, disaster relief, exploration, defense and intelligence, visualization and simulation of envir...

2011
M. A. Cho L. Naidoo R. Mathieu

The advent of hyperspectral remote sensing has provided new opportunities for species mapping. However, the high dimensionality of hyperspectral data limits the application of parametric classifiers for species mapping because of the demand for a large number of training samples. This situation could change with the arrival of new spaceborne multispectral sensors such as WorldView-2 and RapidEy...

2014
Ebrahim Taherzadeh Helmi Z. M. Shafri

One of the most important tasks in urban remote sensing is the detection of impervious surfaces (IS), such as roofs and roads. However, detection of IS in heterogeneous areas still remains one of the most challenging tasks. In this study, detection of concrete roof using an object-based approach was proposed. A new rule-based classification was developed to detect concrete roof tile. This propo...

Journal: :The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences 2012

2012
Rakesh Kumar Mishra

There are several applications of vehicle information (position, speed, and direction). WorldView-2 satellite has three sensors: one Pan and two MS (MS-1: BGRN1, Pan, and MS-2:CYREN2). Because of a slight time gap in acquiring images from these sensors, the WorldView-2 images capture three different positions of the moving vehicles. This paper proposes a new technique to extract the vehicle inf...

Journal: :Remote Sensing 2016
Manuel A. Aguilar Abderrahim Nemmaoui Antonio Novelli Fernando J. Aguilar Andrés García Lorca

Greenhouse mapping through remote sensing has received extensive attention over the last decades. In this article, the innovative goal relies on mapping greenhouses through the combined use of very high resolution satellite data (WorldView-2) and Landsat 8 Operational Land Imager (OLI) time series within a context of an object-based image analysis (OBIA) and decision tree classification. Thus, ...

Journal: :Journal of personality and social psychology 2007
Brenda Major Cheryl R Kaiser Laurie T O'Brien Shannon K McCoy

In 3 studies, the authors tested the hypothesis that discrimination targets' worldview moderates the impact of perceived discrimination on self-esteem among devalued groups. In Study 1, perceiving discrimination against the ingroup was negatively associated with self-esteem among Latino Americans who endorsed a meritocracy worldview (e.g., believed that individuals of any group can get ahead in...

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