Effects of Specular Highlights on Perceived Surface Convexity
نویسندگان
چکیده
منابع مشابه
Effects of Specular Highlights on Perceived Surface Convexity
Shading is known to produce vivid perceptions of depth. However, the influence of specular highlights on perceived shape is unclear: some studies have shown that highlights improve quantitative shape perception while others have shown no effect. Here we ask how specular highlights combine with Lambertian shading cues to determine perceived surface curvature, and to what degree this is based upo...
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The result of averaging or interpolating unit normals is less than unit length unless all normals within the footprint happen to be identical. Most algorithms simply renormalize, but this paper explores how the shortening can be used as a measure of normal variation to eliminate the common problem of strobing/sparkling noise due to aliasing of specular highlights. Figure 1. With aliasing (left)...
متن کاملThe color of specular highlights
An integral part of computer graphics, machine vision and human vision understanding is modeling how a surface reflects light. There is a substantial body of work on models describing surface reflectance ranging from purely matte to purely specular. One of the advantages of diffuse reflectance is that the color and the intensity of the reflected light are separable for most materials. Color is ...
متن کاملSegmentation of Specular Highlights from Object Surfaces
A major hindrance to image segmentation tasks are the presence of specular highlights on object surfaces. Specular highlights appear on object surfaces where the specu lar component of reflection from illuminating light sources is so dominant that most detail of the object su rface is obscured by a bright region of refiecied light. Specular highlights are very common artifacts of most ligh t in...
متن کاملThe Reproduction of Specular Highlights on High Dynamic Range Displays
Recent advances in the design of high dynamic range (HDR) monitors enable the display of images having a large dynamic range, close to that encountered in the real world. As their usage will increase, we will be confronted with the problem of rerendering images that have been mapped to standard dynamic range (SDR) displays so that they look natural on HDR monitors. We address this issue for SDR...
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ژورنال
عنوان ژورنال: PLoS Computational Biology
سال: 2014
ISSN: 1553-7358
DOI: 10.1371/journal.pcbi.1003576