Hope, That Small Flame in a Dark Room in Afghanistan

2022 ◽  
Vol 96 (1) ◽  
pp. 25-27
Author(s):  
Fowzia Karimi
Keyword(s):  
Dark Room

Dark Room Readings: Scenes of Maternal Photography

2010 ◽  
Vol 32 (2) ◽  
pp. 231-270
Author(s):  
Elissa Marder
Keyword(s):  
Dark Room

Effects of Black Luminance Level on Image Quality

2019 ◽  
Vol 2019 (1) ◽  
pp. 104-107
Author(s):  
Ye Seul Baek ◽  
Youngshin Kwak ◽  
Sehyeok Park
Keyword(s):  
Image Quality ◽  
Luminance Level ◽  
Psychophysical Experiment ◽  
Image Histogram ◽  
Affect Image Quality ◽  
Low Luminance ◽  
Black Level ◽  
Oled Display ◽  
Dark Room

The image quality is affected by the black luminance level of the image. This research aimed to investigate how low luminance levels are required to maintain image quality. The psychophysical experiment was carried out in a dark room using OLED display. Total of 6 different black luminance levels (0.003, 0.05, 0.1, 0.2, 0.3, and 1 cd/m2) were used in the experiment. Total of 20 participants was invited to evaluate the image quality. For the experiment, twelve test images are used and these test images categorized into three groups as dark, medium bright and bright image group by image histogram distribution. Each image is rendered by adjusting six different black luminance levels. Result found that the black level is higher than 0.1 cd/m2, the preference for the image is decreased. The best performance is achieved when the black level is 0.003 cd/m2, but there is no big difference from 0.1 cd/m2. The final result shows that a change in black level between about 0.003 cd/m2 and 0.1 cd/m2 does not significantly affect image quality.

Processing of Information about Location during Locomotion: Effects of Amount of Visual Information about the Locomotor Patterns

1980 ◽  
Vol 51 (1) ◽  
pp. 231-238 ◽  
Author(s):  
Anders Böök ◽  
Tommy Gärling
Keyword(s):  
Visual Information ◽  
Concurrent Task ◽  
Negative Effects ◽  
Impaired Performance ◽  
Central Processing ◽  
Starting Point ◽  
Light Line ◽  
Locomotor Patterns ◽  
Dark Room

How maintenance of orientation during locomotion in unfamiliar environments is accomplished was investigated by presenting subjects ( n = 32) a target in different locations in a dark room, having them walk linearly behind a moving light line (1.12 m/sec.), and from a stopping point 12 and 22.6 m away, numerically estimate direction and distance to the target. An equal number of subjects was assigned to each of 2 × 2 treatment levels: the starting point either visible or invisible from the stopping point and the target either visible only from the starting point or throughout each trial. In the conditions with invisible targets there were mainly negative effects of the visible starting point, partially the same as those previously obtained for a concurrent task during locomotion. The results suggested that maintenance of orientation is achieved by recurrent central processing of information, which if postponed leads to impaired performance mainly because forgetting occurs.

Dark Room / Gray Scale / White Noise

2001 ◽  
Vol 23 (2) ◽  
pp. 18
Author(s):  
Beth Herst
Keyword(s):  
White Noise ◽  
Gray Scale ◽  
Dark Room

scholarly journals VI. Experiments on the production and propagation of light from the phosphorus in vacuo , made before the Royal Society by Mr. Fra. Hauksbee

1705 ◽  
Vol 24 (296) ◽  
pp. 1865-1866
Keyword(s):  
Royal Society ◽  
Propagation Of Light ◽  
Dark Room

Experiment I. In pursuance to the Commands of his Honourable Society, Having a dark Room provided, the first Experiment was by drawing some Lines on a piece of blue Paper with the Phosphorus , which became immediately Luminous in the open Air, having a continual undulating Motion. This being plac'd under a Receiver, after some few Exclusions, the Undulation ceas'd, but the Luminous Quality appeared to be in a great measure increas'd; the Receiver being farther exaulted, it became manifestly brighter; and so continu'd, till on the Admission of Air (which was gradually done) the Light sensibly diminishing all the while. But upon the Repetition of the Experiment, it was the Opinion of those Gentlemen then present, that it did not appear altogether so brisk or so vivid as at first.

In a dark room, let there be light!

1998 ◽  
Vol 36 (5) ◽  
pp. 296-296
Author(s):  
Michael H. Brown
Keyword(s):  
Dark Room
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