Rendering systems often represent curved surfaces as a mesh of planar polygons that are shaded to restore a smooth appearance. Gouraud shading uses linear color interpolation and its hardware implementation is relatively easy, but it handles specular highlights incorrectly and introduces annoying artifacts called Mach banding over the edges of the polygon mesh. In software rendering Phong shadi...

This paper investigates the use of shape-from-shading for coarse view synthesis. The aim of our study is to determine whether needle-maps delivered by a new shape-from-shading (SFS) algorithm can be used as a compact object-representation for the purposes of e3ciently generating appearance manifolds. Speci4cally, we aim to show that the needle-maps can be used to generate novel object views und...

Energy consumption is a very important topic these days especially regarding air conditioning in residential buildings, since this takes the biggest amount of energy in buildings total consumption, residential buildings constitute the biggest percentage of energy consumption in Bahrain. This research reflects on the effects of shading percentage in different solar orientations on the energy con...

In this short paper, we present a caching scheme for low-frequent shading information. The scheme consists of a precalculated, carefully constructed sparse set of points, the density of which adapts to local shading requirements, which we estimate by calculating the ambient occlusion. This fixed set of points is then used to store shading information. This shading information is calculated once...

Occupants’ interaction with the building envelope systems may provide a comfortable indoor environment and lead to a better energy performance of the building. Through questionnaire survey, this study investigates occupant’s pattern of use of windows, shading and air conditioning in Greek residences (mostly apartments) during summer. Results suggest that Greek occupants significantly interact w...

Relief shading is the most common type of cartographic relief representation for print and digital maps. Manual relief shading results in informative and visually pleasing representations of terrain, but it is time consuming and expensive to produce. Current analytical relief shading can be created quickly, but the resulting maps are not as aesthetically appealing and do not show landscape feat...

One of the great promises of real-time shading is the potential to have a single shading program that can run across a wide range of graphics hardware. While we don’t yet have a single cross-platform shading language to satisfy everyone, there is ample evidence that it is possible. In this chapter, we discuss what is necessary to create a cross-platform shading language, how shading languages a...

We develop a fast numerical method to approximate the solutions of a wide class of equations associated to the Shape From Shading problem. Our method, which is based on the control theory and the interfaces propagation, is an extension of the “Fast Marching Method” (FMM) [30,25]. In particular our method extends the FMM to some equations for which the solution is not systematically decreasing a...

Programmable Graphics Processing Units (GPUs) have become widespread. They now support floating-point computations and general programming models. A shading language is a domain-specific programming language for specifying shading computations. In this section of the course notes, we will review several high-level real-time shading languages for programming modern GPUs. These languages have evo...

Extracting range data through active optical triangulation requires robust stripe edge detection of the emitted pattern because of undesired shape and shading variations in the scanned object. We propose several extensions to a structured light system originally proposed by Zhang et al. [1]. Assuming stripes of a certain width, our edge detection criterion is achieved simply by restricting the ...