Color Circle

2013 ◽  
pp. 1-18
Author(s):  
Paul Green-Armytage
Keyword(s):  
Color Circle

scholarly journals Hues of Color Afterimages

i-Perception ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 204166952090355 ◽  
Author(s):  
Jan Koenderink ◽  
Andrea van Doorn ◽  
Christoph Witzel ◽  
Karl Gegenfurtner
Keyword(s):  
Iterative Method ◽  
Fixation Mark ◽  
Narrow Region ◽  
Left And Right ◽  
The Moment ◽  
Color Circle ◽  
The Relationship ◽  
Method Of Adjustment

We studied the relationship between color afterimages and complementary colors. The hues of afterimages of 24 inducer hues, uniformly distributed over the rgb color circle, were measured by an iterative method of adjustment. The judgment of equality of hue of the afterimage and a synthesized patch was effectively judged at the moment immediately after the switch-off of the inducer, when the synthesized patch went through any number of iterative adjustments. The two patches—both phenomenally present, but only one optically presented—appeared to the left and right of a fixation mark that was fixated throughout the whole procedure. Thus, both patches were present in eccentric vision. The hues of afterimages were found to be quite different from the hue of the complementary of the inducer. Almost one half of the color circle (orange to chartreuse) leads to afterimage hues in a narrow region of purples. This implies that color circles based on diametrically opposed inducer–afterimage hues are necessarily inconsistent. Yet, perhaps surprisingly, the relation between primary and afterimage hues is still approximately an involution (they are reciprocally related).

A Semantic Space of Color Names

1992 ◽  
Vol 3 (2) ◽  
pp. 105-110 ◽  
Author(s):  
Ch.A. Izmailov ◽  
E.N. Sokolov
Keyword(s):  
Multidimensional Scaling ◽  
Color Space ◽  
Spherical Model ◽  
Semantic Space ◽  
Full Color ◽  
Visual Inputs ◽  
Stage Process ◽  
The Difference ◽  
Sensory Color ◽  
Color Circle

Three Russian subjects learned arbitrary pairings between 20 colors and 20 three-letter artificial color names. After different amounts of this training, the subjects rated the difference between the colors associated with every pair of artificial names when these names were presented without the colors. Multidimensional scaling of the ratings after a small amount of training revealed a grouping of the words into four semantic clusters corresponding to the following groups of related colors: the violets, the blues, the greens, and the yellows-through-reds. After more extensive training, multidimensional scaling yielded the full color circle of hues. Further analysis of the data indicated that a spherical model previously proposed by the authors for sensory color space has advantages, also, for the semantic color space obtained when only the names of colors are presented. The results are interpreted in terms of a two-stage process of neuronal analysis of visual inputs in which the activity of four color-opponent channels is followed by differential activation of cells tuned to specific colors.

scholarly journals Efficiency Evaluation of Hospitals Sterilization by Biological and Chemical Methods

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Davood Ahmadi ◽  
Abdolmajid Fadaei
Keyword(s):  
Loading Rate ◽  
Biological Indicator ◽  
Biological Index ◽  
Chemical Methods ◽  
Chemical Indicators ◽  
Color Circle ◽  
Location Type ◽  
And Control ◽  
Chemical Indicator ◽  
Light Medium

Autoclaving is one of the methods which sterilizes medical solidwaste. This study was carried out to evaluate efficiency of autoclaves in two Shahrekord hospitals(Kashani and Hajar) in Iran by biological and chemical indicators. In this study, the performance of autoclave was studied based on biological and chemical through setting 96 tests. Variables were loading type in four groups (light, medium, semi- heavy, and heavy), location, type of hospital , and temperature-135°C, time10min features in fixed pressure equal to 4.2 bar. Biological and chemical indicators were ATCC 7953 which contained Stearotermophilus Geobacillus spores ,and chemical indicator Class 6 with three color circle as weekly, respectively.The best autoclave operational condition based on biological indicator in both hospitals were light loading rate in Kashani and Hajar 66%(8), and 75%(9) desirable results, respectively. Each four loading rate level based on biological and chemical indicators the Hajar hospital with 68% desirable results were more efficiency than Kashani hospital with57% desirable results. According to results of this study (biological index) sterilization failure in kashani and Hajar hospitals were 65%, and 50%, respectively.There is an increased need for suitable regulation and control of autoclave devices and for monitoring and suitable handling of these devices in developing countries.

Project Metamorphosis: Designing a Dynamic Framework for Converting Musical Compositions into Paintings

Leonardo ◽  
2021 ◽  
pp. 1-11
Author(s):  
Rao Hamza Ali ◽  
Grace Fong ◽  
Erik Linstead
Keyword(s):  
Real Time ◽  
Simple Approach ◽  
Generation Process ◽  
Musical Piece ◽  
Rule Based ◽  
Rule Based System ◽  
Dynamic Framework ◽  
Musical Compositions ◽  
Piano Composition ◽  
Color Circle

Abstract The authors present an automated, rule-based system to convert piano compositions into paintings. Using a color-note association scale presented by Edward Maryon in his book Marcotone (1919), which correlates 12-tone scale with 12 hues of the color circle, the authors present a simple approach for extracting colors associated with each note played in a piano composition. The authors also describe the color extraction and art generation process in detail, as well as the process to create ‘moving art,’ which imitates the progression of a musical piece in real time. They share and discuss artworks generated for four famous piano compositions.

Color Circle

2016 ◽  
pp. 259-274
Author(s):  
Paul Green-Armytage
Keyword(s):  
Color Circle

scholarly journals The Semantic Component of the Evoked Potential of Differentiation

2008 ◽  
Vol 11 (1) ◽  
pp. 323-342
Author(s):  
Chingis A. Izmailov ◽  
Svetlana G. Korshunova ◽  
Yevgeniy N. Sokolov
Keyword(s):  
Multidimensional Scaling ◽  
Evoked Potentials ◽  
Visual Stimulus ◽  
Word Length ◽  
Evoked Potential ◽  
Basic Emotions ◽  
Cortical Evoked Potentials ◽  
Semantic Component ◽  
Color Circle ◽  
Semantic Attributes

This work analyzes data from recordings of (occipital and temporal) cortical evoked potentials (called evoked potentials of differentiation (EPD) occurring in humans in response to an abrupt substitution of stimuli. As stimuli we used three groups of words: the names of the ten basic colors taken from Newton's color circle; the names of seven basic emotions forming Shlossberg's circle of emotions; and seven nonsense words comprised of random combinations of letters. Within each group of word stimuli we constructed a matrix of the differences between the amplitudes of mid-latency components of EPD for each pair of words. This matrix was analyzed using the method of multidimensional scaling. As a result of this analysis we were able to distinguish the semantic and configurational components of EPD amplitude. The semantic component of EPD amplitude was evaluated by comparing structure of the data obtained to the circular structures of emotion and color names. The configurational component was evaluated on the basis of the attribute of word length (number of letters). It was demonstrated that the semantic component of the EPD can only be detected in the left occipital lead at an interpeak amplitude of P120-N180. The configurational component is reflected in the occipital and temporal leads to an identical extent, but only in the amplitude of a later (N180-P230) component of the EPD. The results obtained are discussed in terms of the coding of categorized, configurational, and semantic attributes of a visual stimulus.

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