Preferred chroma enhancement and its dependence on hue are studied in a twopart experiment using a wide-gamut multi-primary display. Earlier research showed a clear dependence on hue but was limited by the gamut of the display it employed; the present work builds on this while removing the gamut constraints. In the first part of the present experiment, a tuning task was used to refine the prefe...

We explore frame-level audio feature learning for chord recognition using artificial neural networks. We present the argument that chroma vectors potentially hold enough information to model harmonic content of audio for chord recognition, but that standard chroma extractors compute too noisy features. This leads us to propose a learned chroma feature extractor based on artificial neural networ...

We study the automatic identification of Western classical music styles by directly using chroma histograms as classification features. Thereby, we evaluate the benefits of knowing a piece’s global key for estimating key-related pitch classes. First, we present four automatic key detection systems. We compare their performance on suitable datasets of classical music and optimize the algorithms’...

OBJECTIVE To test the null hypothesis that there is no color change when enamel porcelain thickness is changed and to evaluate the ability of a shade guide to prescribe chroma. METHODS Three shades (3M1, 3M2 and 3M3) were selected from a Vitapan 3D master shade guide. Five disk specimens were prepared for each shade, consisting of three layers (opacious dentin, dentin and enamel) at thickness...

We present the Chroma software system [1] for lattice QCD (LQCD) calculations. Chroma aims to provide a computational LQCD toolbox which is flexible, portable and efficient on a wide range of architectures from desktop workstations to clusters, commercial machines and new architectures such as the QCDOC [2] Development on Chroma started at the JLab for the U.S. lattice community, in particular ...

INTRODUCTION The Spies™ system (Karl-Storz®) was introduced into digital ureteroscopy to improve endoscopic vision. To date, there is no data to either indicate which of the Spies modalities is better for improving diagnosis and treatment procedures, nor to compare the modalities in terms of image quality. The aim of this study was to evaluate and compare the image quality of five Spies™ modali...

Some areas in auditory cortex respond preferentially to sounds that elicit pitch, such as musical sounds or voiced speech. This study used human electroencephalography (EEG) with an adaptation paradigm to investigate how pitch is represented within these areas and, in particular, whether the representation reflects the physical or perceptual dimensions of pitch. Physically, pitch corresponds to...

Although the color measurement of facial skin becomes more common in dermatology and cosmetics, little is known about the relationship between subjective color perception and colorimetric values in facial skin. In this study, the possible relationships among perceived whiteness and the metric lightness, chroma and hue angle of Japanese females’ facial skin color were investigated. First, the pe...

Chroma Key is a special-effects technique widely used by television and motion picture industries for image composition. This technique allows users to replace sections identified by a chosen colour in a multimedia stream (like a video or a photo) with another image or video stream. In this paper, we describe an easy-to-implement technique for the creation of an Android based application for mo...