선택한 단어 수는 입니다.
최소 단어 이상 선택하여야 합니다.
최소 단어 이상 선택하여야 합니다.
선택한 단어 수는 30입니다.
최대 10 단어까지만 선택 가능합니다.
최대 10 단어까지만 선택 가능합니다.
제안 방법
- If the perceived afterimage of the gray circle on the bichromatic “red/green" background lies between the two afterimage colors of a gray circle on each uniform 'jed" and uniform "green" background, this lets us assume that a mixture of red and green produces yellow and the perceived afterimage of the gray circle on the bichromatic "red/green" background comes from an additive mixture of red and green. To verify the assumption, the CIE chromaticity coordinates of each afterimage of a gray circle on a uniform "red" background and on a unifonn "green" background were obtained from each observer, and the same design was applied to the other combinations of bichromatic background, which was Ublue/green, ) and "blue/yellow";. The angle in the CIE chromaticity coordinates referring to hue difference was hypothesized to be significantly different from each condition, and the distance in the CIE chromaticity coordinates referring to saturation was hypothesized not to be significantly different from each condition.
- Three observers took part in the experiment; two of the observers (one female, the other male) were naive as to the purpose of the experiment, and the third observer was the author (female). All the three observers had corrected-to- normal acuity, and normal color vision as evaluated by the Ishihara Pseudoisochromatic Plates.
- Experiment 4 was designed to test the effects of visible boundary crossing the central area of the afterimage corresponding to the gray circle of adaptation stim니us. A boundary which split the central area was inserted in the test stimulus.
- The stimulus display consisted of three parts: adaptation duration, test duration, and blanking duration to remove afterimages by the previous trial.
- The yellowish color induced on the central area in the white background seems phenomenally to derive from the additive mixture of two colors in the adaptation background. To confirm such possibilities, the effects of several combinations of equiluminant background colors were tested on the central area in the afterimage corresponding to the gray circle (from Fig. 3) in Experiment 1.
- To disprove the hypothesis that the equiluminant state of the two colors in the background might be the reason for the phenomenon of additive color mixture in the afterimage, Experiment 2 was conducted with various luminance differences between the two colors in the background. The chromatic mixture of the afterimages still appeared with a bichromatic background at different luminance levels.
대상 데이터
- Stimuli were presented on a 17-inch calibrated monitor (LG FLATRON 775FT) with 60 Hz refresh rate controlled by a Pentium-in computer. The monitor and the surroundings were covered with black cardboard to minimize light reflection and scattering, and display luminances were measured by using a Minolta LS-110 Luminance-Meter.
- Three observers took part in the experiment; two of the observers (one female, the other male) were naive as to the purpose of the experiment, and the third observer was the author (female). All the three observers had corrected-to- normal acuity, and normal color vision as evaluated by the Ishihara Pseudoisochromatic Plates.
데이터처리
- 4) are magnified to the white point because the chromaticity values of afterimages are desaturated and gathered near the udiite point. Repeated-measures ANOVA was used to determine whether each chromaticity value obtained from the two uniform backgrounds was significantly different from the chromaticity value obtained from a bichromatic background. Euclidean distances (from the white point) in terms of saturation difference were obtained from equation (1):
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