The motivation of the paper is to design an appropriate measure for some HVS characteristics, especially image structures and luminance
, and develop a novel PIQA metric.
On each trial participants viewed 1 of the 3 disks of different luminance
(3.2, 10, and 32 cd/[m.sup.2]) presented for 500 ms; after the disk had disappeared, the participant reported the perceived brightness of the disk aloud during inter-stimulus interval (ISI), given that the magnitude of the standard disk was 10 (Stevens, 1971).
(8,20,21), but also with studies on the changes in sensitivity to second-order stimuli (non-elementary stimuli, defined by changes in features, texture, and depth, and not only by sinusoidal modulation of luminance
in space) and studies on changes in perception of contour deformation throughout aging.
Dramatic reduction of luminance
and EL intensity was recorded once the Ti[O.sub.2] NPs content exceeded 25wt.%.
: 2520 cd/m2 (5000K), 2700 cd/m2 (4000K), 3000 cd/m2 (3000K)
The independent variables included the color and luminance
of an image that was reflected on the vehicle's windshield.
Also, the dependences of the relative luminance
of the object L* on the relative density of fog were obtained for different colour (dominant wavelength) of the LEDs.
Optical Characterization (Spatial Luminance
of Replicated MLAs)
Anchoring is concerned with the localization of luminance
values in relation to the grey scale (Which luminance
is perceived as white?).
In conventional photography, the luminance
of the captured image differs from the one of the real scene due to the difference in their dynamic intervals (the ratio between the lowest and greatest possible brightness value).
At the Light and Building trade fair in March, GL Optic launched the GL Opticam 1.0--an optical digital image camera system, which supports luminance
measurements for the quality control of lighting products, illuminated symbols and automotive and electrical displays.
range masking and color range masking to limit the effects of image editing to a range of tones or brightness (luminance
) or to a range of colors.