Evaluating visual discomfort in stereoscopic projection-based CAVE system with a close viewing distance

2015 ◽  
Author(s):  
Weitao Song ◽  
Dongdong Weng ◽  
Dan Feng ◽  
Yuqian Li ◽  
Yue Liu ◽  
...  
Keyword(s):  
Viewing Distance ◽  
Visual Discomfort ◽  
Cave System ◽  
Stereoscopic Projection

Effects of Display Curvature and Task Duration on Proofreading Task Performance, Visual Fatigue, Visual Discomfort, and Display Satisfaction

2016 ◽  
Vol 60 (1) ◽  
pp. 790-794 ◽  
Author(s):  
Sungryul Park ◽  
Jihhyeon Yi ◽  
Donghee Choi ◽  
Songil Lee ◽  
Gyouhyung Kyung ◽  
...  
Keyword(s):  
Error Rate ◽  
Polynomial Regression ◽  
Viewing Distance ◽  
Visual Fatigue ◽  
Visual Discomfort ◽  
Task Duration ◽  
Two Factors ◽  
Task Durations ◽  
The Mean ◽  
And Task

With more curved display products in the market and more exposure to such products, it is necessary to examine the effects of display curvature and task duration from the ergonomics perspective. The current study examined the effects of these two factors on visual performance, visual fatigue, visual discomfort, and display satisfaction during proofreading tasks. We incorporated five display curvatures (600R, 1140R, 2000R, 4000R, and flat) and five task durations (0, 15, 30, 45, and 60 min). Each of 50 individuals completed a 1-hr proofreading task at one of five display curvature conditions. The horizontal viewing distance was fixed at 600mm. Proofreading performance (speed and error rate), subjective visual fatigue [on ECQ (Eye Complaint Questionnaire)], physiological visual fatigue [CFF (Critical Fusion Frequency), blink duration, and blink frequency], visual discomfort (on VAS), and display satisfaction (on VAS) were measured. The highest mean proofreading speed was at 600R. The mean proofreading speed and error rate increased by 15.5% and 22.3%, respectively, over the 1-h task. The mean ECQ score and visual discomfort increased by 188.6% and 107.2% during 45 and 60 min of the task, respectively. The mean CFF and display satisfaction decreased by 0.49Hz and 11.2% during 15 and 15-45 min of the task. A polynomial regression model for subjective visual fatigue was developed (adjusted R2 = 0.6). These findings can be used when determining ergonomic display curvatures and predicting visual fatigue.

scholarly journals Visual discomfort with stereo displays: effects of viewing distance and direction of vergence-accommodation conflict

2011 ◽  
Author(s):  
Takashi Shibata ◽  
Joohwan Kim ◽  
David M. Hoffman ◽  
Martin S. Banks
Keyword(s):  
Viewing Distance ◽  
Visual Discomfort

Legibility of text as a function of color combinations and viewing distance.

1983 ◽  
Author(s):  
Lars-Goeran Nilsson ◽  
Kjell Ohlsson ◽  
Jerker Roennberg
Keyword(s):  
Viewing Distance ◽  
Color Combinations

Monitor Viewing Distance for Younger and Older Workers

2008 ◽  
Author(s):  
Neil Charness ◽  
Katinka Dijkstra ◽  
Tiffany Jastrzembski ◽  
Sallie Weaver ◽  
Michael Champion
Keyword(s):  
Older Workers ◽  
Viewing Distance

Using watermark visibility measurements to select an optimized pair of spot colors for use in a binary watermark

2020 ◽  
Vol 2020 (15) ◽  
pp. 197-1-197-7
Author(s):  
Alastair Reed ◽  
Vlado Kitanovski ◽  
Kristyn Falkenstern ◽  
Marius Pedersen
Keyword(s):  
Food Packaging ◽  
Red Light ◽  
Human Observer ◽  
Viewing Distance ◽  
Point Of Sale ◽  
Complementary Color ◽  
Low Visibility ◽  
Packaging Industry ◽  
Spot Color ◽  
Selection Of

Spot colors are widely used in the food packaging industry. We wish to add a watermark signal within a spot color that is readable by a Point Of Sale (POS) barcode scanner which typically has red illumination. Some spot colors such as blue, black and green reflect very little red light and are difficult to modulate with a watermark at low visibility to a human observer. The visibility measurements that have been made with the Digimarc watermark enables the selection of a complementary color to the base color which can be detected by a POS barcode scanner but is imperceptible at normal viewing distance.

Cave System Analysis - An Effective Approach to Predict Hydrocarbons in Cavernous Carbonate Reservoir

2013 ◽  
Author(s):  
Chunshu Luo ◽  
Fangjian Xue ◽  
Xinglang Deng ◽  
Qing Mao ◽  
Pin Yang ◽  
...  
Keyword(s):  
System Analysis ◽  
Carbonate Reservoir ◽  
Cave System

3D Image Depth Enlargement in Large Edge-Based DFD Display with Long Viewing Distance by Blurring Edge Images

2019 ◽  
pp. 183
Author(s):  
Hideto Matsubara ◽  
Haruki Mizushina ◽  
Shiro Suyama
Keyword(s):  
Viewing Distance ◽  
3D Image ◽  
Edge Based ◽  
Image Depth

Magnification of Imagery to Compensate for the Decrease in Perceived Size Associated With a 28-Inch Viewing Distance

1999 ◽  
Author(s):  
Byron J. Pierce ◽  
George A. Geri
Keyword(s):  
Viewing Distance
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