Most methods for the detection and removal of specular reflections suffer from nonuniform highlight regions and/or nonconverged artifacts induced by discontinuities in the surface colors, especially when dealing with highly textured, multicolored images. In this paper, a novel noniterative and predefined constraint-free method based on tensor voting is proposed to detect and remove the highligh...

Illumination condition is one of the most important factors in imaging. Due to the relatively complex interaction occurring when an incident light is irradiated on the surface of an object, it has been a topic of researches and studies for quite a while now. In this study, its influence on the reconstruction of spectral reflectance and image stitching was explored. A traditional Japanese painti...

Deep space climate observatory (DSCOVR) spacecraft drifts about the Lagrangian point ≈1.4–1.6 × 106 km from Earth, where its Earth polychromatic imaging camera (EPIC) observes sun-lit face of every 1 to 2 hours. At any instance, there is a preferred (specular) spot on globe, glint may be observed by EPIC. While monitoring reflectance at these spots (terrestrial glitter), we observe occasional i...

Shading and reflectance images, which are commonly called intrinsic images, are useful in many computer vision applications. A number of methods have been proposed to extract those images. Unfortunately, all of these methods assume diffuse only reflections and deem highlights to be outliers. To overcome the presence of highlights, usually reflection components separation is applied before attem...

Image structure is generated by distinct physical sources that include 3-D surface geometry, surface reflectance, and the light field. A fundamental problem in midlevel vision involves understanding how, and how well, the visual system separates images into their underlying sources. A large body of recent work has shown that the perception of gloss exhibits significant dependencies on both 3-D ...

Shape from shading with multiple light sources is an active research area and a diverse range of approaches have been proposed in the last decades. However, devising a robust reconstruction technique still remains a challenging goal as the image acquisition process is highly non-linear. Recent Photometric Stereo variants rely on simplifying assumptions in order to make the problem solvable: lig...

We report on the development of a hybrid mirror realized by integrating an EUV-reflecting multilayer coating with a lamellar grating substrate. This hybrid mirror acts as an efficient Bragg reflector for extreme ultraviolet (EUV) radiation at a given wavelength while simultaneously providing spectral-selective suppression of the specular reflectance for unwanted longer-wavelength radiation due ...

While much attention has been given to understanding biases in gloss perception (e.g., changes perceived reflectance as a function of lighting, shape, viewpoint, and other factors), here we investigated sensitivity surface reflectance. We tested how visual differences specular varies the magnitude Stimuli consisted renderings glossy objects under natural illumination. Using maximum likelihood d...