نتایج جستجو برای: where shading levels of 0 no shading

تعداد نتایج: 21871053  

Journal: :Cartographica 2001
Bernhard Jenny

The software currently available for analytical relief shading does not generally permit local adaptations of the light direction, the simulation of aerial perspective, and other necessary techniques developed for manual relief shading. To remedy this deficiency, a program for computer-assisted relief shading has been developed that allows users to locally adapt shading characteristics, permitt...

2017
Lubin Song Qingping Ma Zhongwei Zou Kang Sun Yuantao Yao Jihan Tao Najeeb A. Kaleri Xinghui Li

'Huangjinya' is an excellent albino tea germplasm cultivated in China because of its bright color and high amino acid content. It is light sensitive, with yellow leaves under intense light while green leaves under weak light. As well, the flavonoid and carotenoid levels increased after moderate shading treatment. However, the mechanism underlying this interesting phenomenon remains unclear. In ...

Journal: :Comput. Graph. Forum 2015
Henrik Lieng Flora Ponjou Tasse Jirí Kosinka Neil A. Dodgson

A challenge in vector graphics is to define primitives that offer flexible manipulation of colour gradients. We propose a new primitive, called a shading curve, that supports explicit and local gradient control. This is achieved by associating shading profiles to each side of the curve. These shading profiles, which can be manually manipulated, represent the colour gradient out from their assoc...

2012
Jian Yao

To investigate the energy performance of solar shading devices, this paper carried out a survey on the current status of solar shading utilization in buildings in Ningbo and performed building simulations to evaluate the energy savings potential by adopting different solar shading devices. Results show that solar shading utilization in this area is not popular and effective, and should be consi...

Journal: :Perception & psychophysics 1992
D A Kleffner V S Ramachandran

The extraction of three-dimensional shape from shading is one of the most perceptually compelling, yet poorly understood, aspects of visual perception. In this paper, we report several new experiments on the manner in which the perception of shape from shading interacts with other visual processes such as perceptual grouping, preattentive search ("pop-out"), and motion perception. Our specific ...

2014
Yuanliu Liu Zejian Yuan Nanning Zheng

An image is composed by several intrinsic images including the reflectance and the shading. In this paper, we propose a novel approach to infer the shading image from shading orders between pairs of pixels. The pairwise shading orders are measured by two types of methods: the brightness order and the low-order fittings of local shading field. The brightness order is a non-local measure, which d...

2005
Achille Braquelaire

Shading has a great impact to the human perception of 3D objects. Thus, in order to create or to deform a 3D object, it seems natural to manipulate its perceived shading. This paper presents a new solution for the software implementation of this idea. Our approach is based on the ability of a user to coarsely draw a shading, under different lighting directions. With this intuitive process, user...

1996
Jiang Yu Zheng Hiroshi Kakinoki Kazuaki Tanaka Norihiro Abe

This work reconstructs 3D graphics model of an object from an image sequence taken during the object rotation. Shading and its motion information are used in estimating shapes of smooth surfaces between fixed edges from corners and patterns. Being different from conventional shape from shadings that use one or several images, we use an image sequence that provides not only shading but also its ...

2002
Jan Kautz Katja Daubert Hans-Peter Seidel

Quite a few techniques have been proposed on how to implement more complex and realistic shading models with graphics hardware [5, 7], making them useful for VR applications. Still, these techniques are rarely used, probably due to two reasons: complex implementation issues, and unintuitive parameters for the used shading models. We propose to use a simple technique called "NDF shading". It all...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1390

building on previous studies on the effectiveness of different types of written corrective feedback, the present study aimed at investigating whether direct focused corrective feedback and direct unfocused corrective feedback produced any differential effects on the accurate use of english articles by efl learners across two different proficiency levels (low and high). in current study, the par...

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