Researchers in the field of Computer Graphics are often confronted with the trade off between visual realism and computational cost. So far, Phong and Gouraud shading have been treated as well established methods and attempts have been made to improve visual realism or to reduce computational cost or both. These methods use linear interpolation to compute the normals or intensity, respectively,...

This study was carried out in Pirmam,, Erbil Governorate - Iraq for two years, from 15 March 2020 to 2021 the spring season and September2020 September autumn season, responses of three turf grass genera, includingermuda (Cynodon dactylon L. var. cd4), Tall fescue (Festuca arrundaceae Barleroy) Creeping bent (Agrostis palustris) cultivated by seeds shading levels 0 75% sprayed with paclobutrazo...

Quadratic shading has been proposed as a technique giving better results than Gouraud shading, but which is substantially faster than Phong shading. Several techniques for fitting a second order surface to six points have been proposed. We show in this paper how an approximation of the mid-edge samples can be done in a very efficient way. An approximation of the mid-edge vectors are derived. Se...

with a camera geometry transformation and by incorporating the stereo data as an initial estimate were investigated Based on the traditional problem formulation, it is difficult to integrate the two important vision cues, i.e., shading and by Shao et al. [17] and Leclerc and Bobik [9], respectively. stereo, for shape reconstruction due to conflicting albedo and Recently, Cryer et al. [2] propos...

One of the most successful algorithms that brought realism to the world of 3D image generation is Phong shading. It is an algorithm for smooth shading meshes of planar polygons used to represent curved surfaces. The level of realism and depth perception that can be obtained by Phong shading is attractive for 3D CAD applications and related areas. However, per pixel computation costs which were ...

Three human observers estimated the illumination direction for samples of random Gaussian surfaces illuminated by a collimated beam from random directions. These stimuli appear as 'texture' due to shading and shadowing (the surface on the microscale was Lambertian of uniform albedo; thus texture appears only through shading and shadowing). We found that observers were able to estimate the azimu...

Received: 15 August 2005 Revised: 21 December 2005 Accepted: 6 January 2006 Online publication date: 10 April 2006 Abstract Very early in the object recognition process the human visual system extracts shading information. While shading can enhance the visibility of structures, it can have a negative impact on the judgment of sizes of elements in a structure. In certain visualization systems th...

We propose decoupled sampling, an approach that decouples shading from visibility sampling in order to enable motion blur and depth-of-field at reduced cost. More generally, it enables extensions of modern real-time graphics pipelines that provide controllable shading rates to trade off quality for performance. It can be thought of as a generalization of GPU-style mul-tisample antialiasing (MSA...