We propose a simple, quick and practical color calibration procedure that results in a precise (reproducible), albeit not very accurate (close to values obtained with a reference device), color description in a standard device-dependent color space (sRGB). The system consists of a 3-chip CCD camera, a continuous ringlight, frame grabber and PC. The calibration procedure involves building a prof...

One subjective and two objective methods were used to determine the color of reconsti tuted frozen concentrated orange juice. The USDA color scores for 21 samples ranged from 32 to 37 points when this subjective method was used. Two objective methods were used: (a) the Hunter Color and Color Difference Meter to ob tain tristimulus color values and (b) the Bausch and Lomb Spectronic 505 recordin...

Abstract Soil color has historically been estimated visually, but inaccuracies with this method have documented, including disagreement in evaluators, blindness, and differences physical books due to weathering. As new technologies become available soil scientists, a reliable digital determine the field could offer solution these inaccuracies. This research aimed assess if visual estimates of m...

In image taking colorimetry the tristimulus technique is still the practical viable method if the measuring time should be kept in limits. Due to the fact that the number of coloured glasses that are available to adjust the detector responsivity to the CIE colour matching functions (CMF) is limited and the number of the filters used in a channel can not be increased without limits to decrease t...

We propose a generic and flexible depth-cueing scheme which subsumes many well-known and new color-based depth-cueing approaches. In particular, it includes standard intensity depth-cueing and rather neglected pure saturation depth-cueing. A couple of new combinations and variations of depth cues are presented. Their usefulness is demonstrated in many different fields of application, reaching f...

This paper presents an analysis system aiming at discriminating between normal and pathological voices. Compared to literature of voice pathology assessment, it is characterised by two aspects. First the system is based on features inspired from voice pathology assessment and music information retrieval. Second the distinction between normal and pathological voices is simply based on the correl...

In this study measurements of color parameters of UHT milk were performed, by using a MOM-color 100 photoelectric tristimulus colorimeter. Colors of UHT milk samples containing 3.2% and 1.6% milk fat, processed under industrial conditions, packed in polyethylene terephtalate (PET) based packages, and stored for 0, 15, 30, 45, 60 and 90 days at ambient temperature (20±5°C) were examined. Results...

The recently introduced detector-based calibration method for tristimulus colorimeters has been realized. The NIST reference colorimeter has been calibrated for spectral irradiance responsivity with an uncertainty of 0.15 % (coverage factor k=2) resulting in a chromaticity uncertainty of 0.0004 (k=2) in the x and y chromaticity coordinates when a CIE Illuminant A source is measured. The color s...