Recent work in color difference has led to the recommendation of CIEDE2000 for use as an industrial color difference equation. While CIEDE2000 was designed for predicting the visual difference for large isolated patches, it is often desired to determine the perceived difference of color images. The CIE TC8-02 has been formed to examine these differences. This paper presents an overview of spati...

OBJECTIVE Color match between fiber-reinforced composite (FRC) restorations and teeth is an imperative factor in esthetic dentistry. The purpose of this study is to evaluate the influence of veneering composites and fibers on the color change of FRC restorations. MATERIALS AND METHODS Glass and polyethylene fibers were used to reinforce a direct microhybrid composite (Z250, 3M ESPE) and a mic...

STATEMENT OF PROBLEM Ceramics are widely used for anterior restorations; however, clinical color reproduction still constitutes a challenge particularly when the ceramic crowns are used on titanium implant abutments. PURPOSE The purpose of this in vitro study was to investigate the effect of implant abutment material on the color of different ceramic material systems. MATERIAL AND METHODS F...

Lately, the utilization of natural colorants in textile dyeing and printing has come to forepart manufacturing goods due increased environmental troubles. In this study, wool yarns were dyed with ternary dye combinations (Scutellaria Orientalis L, Rubia Tinctorium and, Punica Granatum L ). The color coordinates washing light fastness investigated. Washing are fair good. Dyed worked calorimetric...

Abstract Recent work in color difference has led to the recommendation of CIEDE2000 for use as an industrial color difference equation. While CIEDE2000 was designed for predicting the visual difference for large isolated patches, it is often desired to determine the perceived difference of color images. The CIE TC8-02 has been formed to examine these differences. This paper presents an overview...

Color gamut characterization is an essential step in the ICC profile generation for imaging devices. It is also needed as part of evaluation and comparison of image quality achievable by different imaging systems. A novel technique is presented for characterizing the color gamut of an imaging device via ray tracing in the CIELAB color space. Initially, the convex hull of the set of measurement ...

To quantify the discolouration of temporary acetal resins in vivo, based on weeks follow-up and salivary pH three thirds tooth. find out if final CIELAB coordinates can be predicted from initial colour coordinates, pH, situation (in thirds) follow-up. Colour (L, C, h) were recorded by spectrophotometry 13 participants fitted with hybrid provisional complete dentures made resin. recordings day p...

Digital imager sensor responses must be transformed to calibrated (human) color representations for display or print reproduction. Errors in these color rendering transformations can arise from a variety of sources, including (a) noise in the acquisition process (including photon noise and sensor noise) and (b) sensor spectral responsivities inconsistent with those of the human cones. These err...

The wood used in the construction of musical instruments is carefully selected, being best quality from point view structure. However, depending on anatomical characteristics wood, resonance classified into classes. For example, sycamore maple with curly grains appreciated by luthiers for its three-dimensional optical effect. This study highlights statistical correlations between physical and a...

We propose two novel image difference metrics using an extension of the S-CIELAB framework, which are based on the Difference of Gaussians model. The first metric uses the Difference of Gaussians model as a basis for the spatial filtering with the ∆E ab as a color difference formula, while the second uses the same model in association with the ∆EE color difference formula. A dataset with 20 gam...