Concept

Spectral power distribution

Publications associées (39)

Deducing Ink-Transmittance Spectra from Reflectance and Transmittance Measurements of Prints

The color of prints is mainly determined by the light absorption of the inks deposited on top of paper. In order to predict the reflectance spectrum of prints, we use a spectral prediction model in which each ink is characterized by its spectral transmitta ...

2007

Design of an endoscopic optical reference to be used for autofluorescence bronchoscopy with a commercially available diagnostic autofluorescence endoscopy (DAFE) system

Georges Wagnières, Tanja Gabrecht, Blaise Lovisa, François André Borle

We present the design of a sterilizable optical reference to characterize and quantify the inter-patient variations in tissue autofluorescence during autofluorescence bronchoscopy with Richard Wolf's diagnostic autofluorescence endoscopy (DAFE) system. The ...

Institute of Physics2007

Assessing human skin color from uncalibrated images

Sabine Süsstrunk, Joanna Marguier

Images of a scene captured with multiple cameras will have different color values due to variations in color rendering across devices. We present a method to accurately retrieve color information from uncalibrated images taken under uncontrolled lighting c ...

2007

Classifying Materials in the Real World

Barbara Caputo

Classifying materials from their appearance is challenging. Impressive results have been obtained under varying illumination and pose conditions. Still, the effect of scale variations and the possibility to generalize across different material samples are ...

IDIAP2007

Motion likelihood and proposal modeling in Model-Based Stochastic Tracking

Daniel Gatica-Perez, Jean-Marc Odobez

Particle filtering is now established as one of the most popular methods for visual tracking. Within this framework, there are two important considerations. The first one refers to the generic assumption that the observations are temporally independent giv ...

IDIAP2004

In vivo autofluorescence imaging of early cancers in the human tracheobronchial tree with a spectrally optimized system

Hubert van den Bergh, Georges Wagnières, Matthieu Philippe Emmanuel Zellweger

The changes in the autofluorescence characteristics of the bronchial tissue is of crucial interest as a cancer diagnostic tool. Evidence exists that this native fluorescence or autofluorescence of bronchial tissues changes when they turn dysplastic and to ...

2003

Prediction of monochrome reflectance spectra with an extended Kubelka-Munk model

Roger Hersch, Patrick Emmel, Safer Mourad

We present a prediction model for digital printers and more specifically for electrophotographic devices. On the one hand, we propose an electrophotographic simulation model which estimates the microscopic structure of any printed toner layer based on its ...

Society for Imaging Science and Technology2002

Infrared spectrum of t‐butyl hydroperoxide excited to the 4νOH vibrational overtone level

Thomas Rizzo

The infrared predissociation spectrum of t-butyl hydroperoxide excited to the 4-nu-OH level reveals extensive mixing between the zeroth-order OH stretch state and nearly isoenergetic zeroth-order dark states. Because most of these dark states have an OH st ...

1991

A photometric test for the cyclization activity of cyclodextrin-glycosyltransferases

Albert Renken

A quick and reliable test was developed to measure the cyclization activity of cyclodextrin glycosyltransferases (CGT). Since the reproducibility depends mostly on the nature of the substrate, maltotriose was employed. The cyclodextrins formed are measured ...

1982

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