Spectroradiometric color measurements were performed at 26 regularly spaced points of a standard wine sampler into which 100 cc of wine were poured. Our goal is to describe the color changes occurring in this system, but not to propose a new method for wine-color measurement. Three samples of three different wines (red, rosé and white) were studied. From experimental measurements, lines of cons...

Various aspects of color have been extensively studied in science and the arts for the simple reason that it conveys information and attracts attention. In perception, color plays an important role. It helps in tasks such as object recognition. In humans, color perception starts with cones in the retina. Studies in the primary visual cortex show opponent mechanisms for color representation. Whi...

It is claimed that the extraction of average features from rapidly presented ensembles is holistic, with attention distributed across the whole set. We investigated whether observers' extraction of mean hue is holistic or could reflect subsampling. Analysis of selections for the mean hue revealed a distribution that peaked at the expected mean hue. However, an ideal observer simulation suggeste...

Dabai or Canarium odontophyllum Miq., from the family Burseraceae, is an important indigenous fruit to Borneo Island. However, it is a highly perishable fruit with short shelf life. Postharvest technology such as modified atmosphere packaging (MAP) can be used to maintain highly perishable fresh fruit quality and increase its shelf life. There is not much work has been carried out to study effe...

Cucumber fruits (Cucumis sativus L., cv. Trópico F1) grown on perlite substrate and NFT (Nutrient Film Technique) were harvested during two seasons (winter and spring) to monitor the effects of climatic conditions and hydroponic growth systems on fruit quality at harvest. The best fruit quality at harvest, as measured by lightness and hue angle parameters, was obtained during the 3 weeks follow...

The aims of this study were 1) to investigate the potential application of near-infrared spectroscopy (NIRS) to predict beef quality (BQ) traits, 2) to assess genetic variations of BQ measures and their predictions obtained by NIRS, and 3) to infer the genetic relationship between measures of BQ and their predictions. Young Piedmontese bulls (n = 1,230) were raised and fattened on 124 farms and...

Transformations of digitized color images in perceptually-uniform CIELUV color space and their perceptual relevance were investigated. Chroma variation was chosen as the first step of a series of investigations into possible transformations (including lightness, hue-angle, chroma, etc.). To obtain the information about the perceptual consequences of the chosen transformations, perceptual image ...

As first remarked by Charles Darwin (1877), very young children frequently have difficulty when naming or choosing colors. To investigate the cause of this difficulty, we have tested preschoolers (mean age = 4.1) for hue discrimination and hue memory and compared their results with those of preadolescents (mean age = 9.6) and young adults (mean age = 25.8). The tests were designed to minimize t...