Stereo in the Presence of Specular Re ection Dinkar N. Bhat Shree. K. Nayar Department of Computer Science Department of Computer Science Columbia University Columbia University New York, NY 10027 New York, NY 10027 [email protected] [email protected] Abstract The problem of accurate depth estimation using stereo in the presence of specular re ection is addressed. Specular reection, a fu...

This paper aims to create an automatic vision defect inspection system that is capable of detecting defects on highly specular reflection curved surfaces, especially for chrome-plated surfaces. These are strongly specular surfaces with very weak diffuse reflection. It is impossible to detect all the defects in one image in which defects may be covered by highlight regions or do not appear becau...

Estimating the illumination and the reflectance properties of an object surface from a few images is an important but challenging problem. The problem becomes even more challenging if we wish to deal with real-world objects that naturally have spatially inhomogeneous reflectance. In this paper, we derive a novel method for estimating the spatially varying specular reflectance properties of a su...

Many flat panel displays (FPDs) have anti-reflection surface treatments that differ in character from those of traditional cathode-ray-tube displays. Specular reflection models (mirror-like, producing a distinct image) combined with diffuse (Lambertian) reflection models can be entirely inadequate to characterize the reflection properties of such displays. A third reflection component, called h...

Binocular stereopsis is a powerful visual depth cue. To exploit it, the brain matches features from the two eyes' views and measures their interocular disparity. This works well for matte surfaces because disparities indicate true surface locations. However, specular (glossy) surfaces are problematic because highlights and reflections are displaced from the true surface in depth, leading to inf...

H. S. Cho Korea Advanced Institute of Science and Technology Department of Mechanical Engineering 373-1 Kusongdong, Yusonggu Taejon, Korea E-mail: [email protected] Abstract. A specular surface reflects light only in the direction such that the angle of incidence equals the angle of reflection. Due to this characteristic, conventional approaches to obtain the shape of specular objects have ...

AIMS To report the appearances of cornea guttata and Fuchs' endothelial dystrophy from white light confocal microscopy. METHODS Seven eyes of four consecutive patients with cornea guttata were prospectively examined. Of the seven eyes, three also had corneal oedema (Fuchs' dystrophy). In vivo white light tandem scanning confocal microscopy was performed in all eyes. Results were compared with...

PURPOSE To describe the differences of corneal endothelial cell densities, cell size variability and cell hexagonality in cataract populations of south Asia between sexes and ethnic groups. METHODS 1,235 eyes of 1,235 male and female patients 40-75 years of age with senile cataract were examined with non contact specular microscopy with semi-automated analysis technique. The cell data of the ...

In this paper, we propose specular‐free (SF) surface to provide excellent image quality under a bright environment. By optimizing the anti‐glare (AG) layer and low‐reflection layer, specular reflection diffuse reduced up 78% 25%, respectively, compared conventional AG. Using SF technique, it is possible remove inconvenience of glare improve perceptual quality.

Colloidal particles that experience perfectly elastic collisions can be modeled using Langevin processes with specular reflection conditions. The article presents a discretization scheme and offers a conjecture for the rate of convergence of the bias produced. Numerically, these conjectures are confirmed for the specular reflection scheme but also for the absorption scheme, which models perfect...