نتایج جستجو برای: terrain attributes

تعداد نتایج: 84446  

Journal: :Journal of vision 2007
Dirk B Walther Li Fei-Fei

In many everyday situations, we bias our perception from the top down, based on a task or an agenda. Frequently, this entails shifting attention to a specific attribute of a particular object or scene. To explore the cost of shifting top-down attention to a different stimulus attribute, we adopt the task-set switching paradigm, in which switch trials are contrasted with repeat trials in mixed-t...

Journal: :Remote Sensing 2016
José A. M. Demattê Leonardo Ramirez-Lopez Rodnei Rizzo Marcos R. Nanni Peterson R. Fiorio Caio T. Fongaro Luiz G. Medeiros Neto José L. Safanelli Pedro Paulo da S. Barros

There is a consensus about the necessity to achieve a quick soil spatial information with few human resources. Remote/proximal sensing and pedotransference are methods that can be integrated into this approach. On the other hand, there is still a lack of strategies indicating on how to put this in practice, especially in the tropics. Thus, the objective of this work was to suggest a strategy fo...

Journal: :Catena 2021

One of the most important factors in soil-landscape analysis can be operational scale applied for mathematical calculations terrain attributes. This study aimed to investigate effects different calculation patterns on attributes and soil aggregate stability-landscape modeling at subwatershed scale. For this purpose, four (slope gradient, slope aspect, plan curvature, profile curvature) were cal...

2015
Emily Hand

We introduce a method for improving facial attribute predictions using other attributes. In the domain of face recognition and verification, attributes are high-level descriptions of face images. Attributes are very useful for identification as well as image search as they provide easily understandable descriptions of faces, rather than most other image descriptors (i.e. HOG, LBP, and SIFT). A ...

Journal: :PVLDB 2014
Qi Wang Manohar Kaul Cheng Long Raymond Chi-Wing Wong

Terrain data is becoming increasingly popular both in industry and in academia. Many tools have been developed for visualizing terrain data. However, we find that (1) they usually accept very few data formats of terrain data only; (2) they do not support terrain simplification well which, as will be shown, is used heavily for query processing in spatial databases; and (3) they do not provide th...

2006
Tanja N. Williamson Paul E. Gessler Peter J. Shouse Robert C. Graham

Four decades after conversion from chaparral to grass, zero-order watersheds were compared to identify differences in topography and its relation to soil characteristics. Three watersheds of each vegetation type were topographically mapped and sampled at random points for depth to weathered bedrock and soil water content. Stepwise regression was used to explain spatial variability in terms of t...

2002
Karl Iagnemma Steven Dubowsky

High-speed unmanned ground vehicles have important potential applications, including reconnaissance, material transport, and planetary exploration. During high-speed operation, it is important for a vehicle to sense changing terrain conditions, and modify its control strategies to ensure aggressive, yet safe, operation. In this paper, a framework for terrain characterization and identification ...

2015
Marcus Hebel Michael Arens Uwe Stilla

The use of helicopters as a sensor platform offers flexible fields of application due to adaptable flying speed at low flight levels. Modern helicopters are equipped with radar altimeters, inertial navigation systems (INS), forward-looking cameras and even laser scanners for automatic obstacle avoidance. If the 3D geometry of the terrain is already available, the analysis of airborne laser scan...

2009
Cheng-Zhi Qin A-Xing Zhu Xun Shi Bao-Lin Li Tao Pei Cheng-Hu Zhou

In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: a b s t r a c t a r t i c l e i n f o Transition between slope positions (e.g., ridge, shoulder slope, back slope, foot slop...

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