The process of visualizing a scienti c data set bene ts from an extensive knowledge of the domain in which the data set is created. Because an in-depth knowledge of all scienti c domains is not available to the creator of a visualization system, a exible and extensible system is essential in providing a productive tool to the scientist. One approach to providing this exibility is through a shad...

in order to study the effects of shading on head and its near leaves on yield and yield components of spring safflower genotypes, an experiment was conducted in factorial arrangement based on a complete randomized block design with four replications at agricultural research station, faculty of agriculture, birjand university during 2008. factors were including three spring safflower genotypes (...

The shape-from-shading (SfS) problem is a classic problem in computer vision. The task in SfS is to compute on the basis of the shading variation in a given 2-D image the 3-D depth of the depicted scene. The corresponding mathematical model eventually leads to a boundary value problem for a Hamilton-Jacobi equation. In this paper we evaluate and compare suitable numerical methods. We begin with...

this study aimed to determine the effects of different shading ratio and covers on “sultana seedless” table grape quality and storability. grapevines were covered at the veraison stage with 3 shading nets (0, 35, and 75% shading), which were then replaced with covering materials including polypropylene cross-stitch (pc), life pack (lp) and mogul (mg), just before harvest. harvested grapes in al...

We present a novel architecture for flexible control of shading rates in a GPU pipeline, and demonstrate substantially reduced shading costs for various applications. We decouple shading and visibility by restricting and quantizing shading rates to a finite set of screen-aligned grids, leading to simpler and fewer changes to the GPU pipeline compared to alternative approaches. Our architecture ...

This paper demonstrates how a recently reported shape-from-shading scheme can be used to extract topographic information from 2D intensity imagery (Worthington and Hancock, IEEE Trans. Pattern Anal. Mach. Intell. 21 (1999) 1250}1267). The shape-from-shading scheme has two important features which enhance the recovered surface description. Firstly, it uses a geometric update procedure which allo...

A retrospective study was conducted in 1993 which quantified the effectsof overstoryshading on both spruce weevil, Pissodes strobi (Peck) damage, and leader growth oninterior white spruce, Picea g/auca(Moench) Voss x engelmannii (Parry ex Englem.).The study was undertaken inthe Prince George and Cariboo Forest Regionsof BritishColumbia where the weevil is causing...

In this paper, parametric design approach is used to optimize the external shading device design, which take examples of horizontal shading devices and horizontal louver shading devices on south faced of buildings in Guangzhou, Shanghai and Beijing. The optimize goal of whole year shading effect is “Shading in summer and solar in winter, both as much as possible at the same time”. In the first ...

Shading was used to generate the appearance of an obliquely illuminated surface with spherical indentations and protrusions. The "pop-out" of an apparent indentation among numerous apparent protrusions served as a psychophysical assay for shape-from-shading. Detectability of the pop-out varied with the direction of apparent illumination, a finding which is characteristic for shape-from-shading ...