Results 211 to 220 of about 911,219 (263)
Some of the next articles are maybe not open access.
Journal of the Optical Society of America, 1971
For a given pair of colors (i) and (j) of the same brightness, an observer generates in a visual colorimeter a third color (i,j) such that he perceives all three colors to be equally bright and the three differences between them to be of equal size.
Wyszecki, G. W., Fielder, G. H.
openaire +3 more sources
For a given pair of colors (i) and (j) of the same brightness, an observer generates in a visual colorimeter a third color (i,j) such that he perceives all three colors to be equally bright and the three differences between them to be of equal size.
Wyszecki, G. W., Fielder, G. H.
openaire +3 more sources
Cytometry Part A, 2014
Key termsequine; immunophenotype; ISCTmarkersThere has been growing interest in recent years in the use ofmesenchymal stem cells (MSCs) as a potential treatment fora number of important diseases. MSCs were first describedas colony-forming units consisting of fibroblast-like cellsderived from bone marrow (1).
Ranera, Beatriz, Barry, Frank
openaire +3 more sources
Key termsequine; immunophenotype; ISCTmarkersThere has been growing interest in recent years in the use ofmesenchymal stem cells (MSCs) as a potential treatment fora number of important diseases. MSCs were first describedas colony-forming units consisting of fibroblast-like cellsderived from bone marrow (1).
Ranera, Beatriz, Barry, Frank
openaire +3 more sources
Color Demosaicing Using Variance of Color Differences
IEEE Transactions on Image Processing, 2006This paper presents an adaptive demosaicing algorithm. Missing green samples are first estimated based on the variances of the color differences along different edge directions. The missing red and blue components are then estimated based on the interpolated green plane. This algorithm can effectively preserve the details in texture regions and, at the
K.-H. Chung, Yuk-Hee Chan
openaire +3 more sources
Journal of the Optical Society of America, 1965
A new visual colorimeter has been designed and built to be used primarily for matching color differences. The colorimeter provides seven visual fields, arranged in a cluster of seven regular hexagons, one in the center and six adjacent to it. Both eyes of the observer see each field uniformly filled with light.
openaire +3 more sources
A new visual colorimeter has been designed and built to be used primarily for matching color differences. The colorimeter provides seven visual fields, arranged in a cluster of seven regular hexagons, one in the center and six adjacent to it. Both eyes of the observer see each field uniformly filled with light.
openaire +3 more sources
Color difference predicted by color component differences
Color Research & Application, 2002AbstractA relationship between assessed color differences and assessed components of colors is presented. The perceptual difference between colors j and k is converted to a lightness difference of two Munsell grays, VA and VB, and djk = |VA − VB|. Scaled values of principal hue components of a color ξα(H|V/C), α = R, Y, G, and B, are read from charts ...
openaire +1 more source
On color differences in context
Journal of the Optical Society of America AOver the last century, the study of color differences has attracted considerable attention, with numerous attempts to develop increasingly accurate perceptual metrics that, however, have progressed incrementally but never achieved full adequacy. Although research eventually moved from color spaces to appearance spaces, color was still examined without ...
Lucia Becatti +3 more
openaire +3 more sources
Ratio Comparisons of Color Differences
Journal of the Optical Society of America, 1964A group of 14 observers made ratio comparisons among a number of color differences consisting of Munsell color samples. The same color differences had been judged previously in another experiment by the method of paired comparisons. The results of the two experiments were found to be equivalent, indicating that both methods of judgment—the ratio method
Y, SUGIYAMA, H, WRIGHT
openaire +2 more sources
Color Difference Thresholds in Dentistry
Journal of Esthetic and Restorative Dentistry, 2015AbstractPurposeThe aim of this prospective multicenter study was to determine 50:50% perceptibility threshold (PT) and 50:50% acceptability threshold (AT) of dental ceramic under simulated clinical settings.Materials and MethodsThe spectral radiance of 63 monochromatic ceramic specimens was determined using a non‐contact spectroradiometer.
Paravina RD +9 more
openaire +3 more sources
Color Preferences Differ with Variations in Color Perception
Trends in Cognitive Sciences, 2015A recent study demonstrates that color preferences of red-green dichromats differ systematically from color preferences of typical trichromatic observers. These differences can be partially explained by variations in cone-opponent mechanisms of dichromatic and trichromatic observers, but they may also be explained from an ecological perspective.
openaire +2 more sources
Upgrading color-difference formulas
Journal of the Optical Society of America A, 2010We propose a method to improve the prediction performance of existing color-difference formulas with additional visual data. The formula is treated as the mean function of a Gaussian process, which is trained with experimentally determined color-discrimination data.
Ingmar, Lissner, Philipp, Urban
openaire +2 more sources