We present a practical framework for reproducing omnidirectional incident illumination
conditions with complex spectra using a light stage with multispectral LED lights. For lighting …

This paper proposes a technique to estimate the direction of light sources based on the
image of eye where the light source is imaged as reflection. The estimated directions of light …

The present paper realizes multiband spectral imaging with high spatial resolution for
omnidirectional estimation of scene illuminant in a simple measuring system. To overcome …

This paper proposes a method for estimating the omnidirectional distribution of the scene
illuminant spectrum from images taken by a camera aimed at a mirrored ball. First, we …

Spot photometers measure the luminance that is emitted or reflected from a small surface
area in a physical environment. Because the measurement is limited to a “spot,” capturing …

A method is developed for estimating an omnidirectional distribution of the scene illuminant
spectral distribution, including spiky fluorescent spectra. First, we show a measuring …

A method is proposed for estimating various parameters of a reflection model using both the
image data and the range data of an object surface. A unified measuring system, combining …

This paper proposes a method for estimating a set of spectral-power distributions of an
omnidirectional light distribution from images taken by a camera aimed at a mirrored ball …

A method is proposed for estimating spectral radiances of the surrounding scene from a
reflected image on the corneal surface. A digital color camera and the human eyeball are …

A method is proposed for estimation of the wide-area color signals of the surrounding scene
in the image reflected on the corneal surface. A digital color camera and the human eyeball …