Subjective evaluation of visual fatigue due to misalignment of motion and still images in a stereoscopic display

2012 ◽  
Vol 20 (2) ◽  
pp. 94 ◽  
Author(s):  
Shoji Yamamoto ◽  
Mitomo Maeda ◽  
Norimichi Tsumura ◽  
Toshiya Nakaguchi ◽  
Ryutaro Okamoto ◽  
...  
Keyword(s):  
Subjective Evaluation ◽  
Stereoscopic Display ◽  
Visual Fatigue ◽  
Still Images

scholarly journals Visual fatigue and discomfort after stereoscopic display viewing

2012 ◽  
Vol 91 (2) ◽  
pp. e149-e153 ◽  
Author(s):  
Li Zhang ◽  
Ya-Qin Zhang ◽  
Jing-Shang Zhang ◽  
Liang Xu ◽  
Jost B. Jonas
Keyword(s):  
Stereoscopic Display ◽  
Visual Fatigue

Comparison of visual fatigue caused by head-mounted display for virtual reality and two-dimensional display using objective and subjective evaluation

Ergonomics ◽  
2019 ◽  
Vol 62 (6) ◽  
pp. 759-766 ◽  
Author(s):  
Masakazu Hirota ◽  
Hiroyuki Kanda ◽  
Takao Endo ◽  
Tomomitsu Miyoshi ◽  
Suguru Miyagawa ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Subjective Evaluation ◽  
Two Dimensional ◽  
Visual Fatigue ◽  
Head Mounted Display ◽  
Objective And Subjective Evaluation

Subjective evaluation of visual fatigue caused by motion images

Displays ◽  
2008 ◽  
Vol 29 (2) ◽  
pp. 159-166 ◽  
Author(s):  
J. Kuze ◽  
K. Ukai
Keyword(s):  
Subjective Evaluation ◽  
Visual Fatigue ◽  
Motion Images

scholarly journals Secondary Prevention of Visual Impairment in Students with Medium Degree Myopia by Means of Physical Therapy in a Vocational School

2017 ◽  
Vol 17 (4) ◽  
pp. 159-168 ◽  
Author(s):  
S. A. Pashkevich ◽  
I. V. Kriventsova
Keyword(s):  
Relative Risk ◽  
Visual Impairment ◽  
Program Effectiveness ◽  
Subjective Evaluation ◽  
Wilcoxon Test ◽  
Vocational School ◽  
Visual Analyzer ◽  
Visual Fatigue ◽  
Preventive Program ◽  
Visual Organ

The objective is to implement a visual impairment prevention program into a vocational school’s academic process for the risk group students and to determine its effectiveness based on the dynamics of comprehensive scoring assessment of the degree of visual pathology risk.Materials and methods. Observed were 91 students (35 boys and 56 girls). For the formative experiment purposes, a study group (SG) consisting of 10 persons (4 boys and 6 girls with a visual organ pathology who performed the designed preventive program) and a reference group (RG) consisting of 10 persons (5 boys and 5 girls with a visual organ pathology who studied under the usual program) were selected The program effectiveness was evaluated by changes in the students’ subjective evaluation of their visual comfort. The Relative Risk Index (RR) was used to perform a rough evatuation of the cause-effect relations between the acting factor and the effect appearance. The output characteristics were compared between the groups using χ2 tests (binary variables), t-tests (continuous variables), Mann-Whitney test for comparing the distribution of ordinal variables, and Wilcoxon test (related sampling).Results. The dynamics in the RG over the academic year showed an increase in the scoring assessment of the visual fatigue, which constituted 90.6 ± 10.3%. At the same time, the students in the SG demonstrated a reduced intensity and number of complaints about the visual analyzer fatigue. In the SG, the complex scoring assessment reliably decreased from 9.8 ± 0.8 to 7.2 ± 0.9 c.u. The implemented preventive program had a positive effect on the complaints: “the desire to bring the text closer to the eyes” (relative risk (RR) = 6.0, χ2 = 5.6, p <0.05), “the feeling of existence of certain periods of change in the visual acuity” (relative risk (RR) = 3.5; χ2 = 5.1; p <0.05), and the overall assessment of the questionnaire (relative risk (RR) = 7.0; χ2 = 7.5; p <0.01). The implementation of the proposed program, by the results of the interview of the students with a visual organ pathology, produced a reliable (p <0.05) increase in the level of the visual analyzer performance.Conclusions. The implementation of the proposed program for the vocational school students with a visual organ pathology had a positve effect on their subjective evaluation of their visual analyzer performance. 

Visual Fatigue Assessment Based on Multi-task Learning

2019 ◽  
Vol 63 (6) ◽  
pp. 60414-1-60414-8
Author(s):  
Danli Wang ◽  
Xueyu Wang ◽  
Yaguang Song ◽  
Qian Xing ◽  
Nan Zheng
Keyword(s):  
Rapid Development ◽  
Assessment Model ◽  
Learning Method ◽  
Stereoscopic Display ◽  
Visual Fatigue ◽  
Fatigue Assessment ◽  
Task Learning ◽  
Eeg Data ◽  
Display Technology ◽  
Electroencephalogram Eeg

Abstract In recent years, with the rapid development of stereoscopic display technology, its applications have become increasingly popular in many fields, and, meanwhile, the number of audiences is also growing. The problem of visual fatigue is becoming more and more prominent. Visual fatigue is mainly caused by vergence‐accommodation conflicts. An evaluation experiment was conducted, and the electroencephalogram (EEG) data of the subjects were collected when they were watching stereoscopic content, and then the stereoscopic fatigue state of the subjects during the viewing process was analyzed. As deep learning is proved to be an effective end-to-end learning method and multi-task learning can alleviate the problem of lacking annotated data, the authors establish a user visual fatigue assessment model based on EEG by using multi-task learning, which can effectively obtain the user’s visual fatigue status, so as to make the comfort designs to avoid the harm caused by user’s visual fatigue.

Time series evaluation of visual fatigue and depth sensation using a stereoscopic display

2009 ◽  
Vol 10 (4) ◽  
pp. 188-194 ◽  
Author(s):  
Sanghyun Kim ◽  
Shinsuke Kishi ◽  
Takashi Kawai ◽  
Toyohiko Hatada
Keyword(s):  
Time Series ◽  
Stereoscopic Display ◽  
Visual Fatigue ◽  
Series Evaluation

IMAGE QUALITY FEEDBACK-BASED ADAPTIVE VIDEO DEFINITION IMPROVEMENT FOR THE SPACE MANIPULATION TASK

2011 ◽  
Vol 11 (02) ◽  
pp. 153-175 ◽  
Author(s):  
HAOTING LIU ◽  
JIE LI ◽  
ZHENG WANG ◽  
JIAN CHENG ◽  
HANQING LU ◽  
...  
Keyword(s):  
Image Quality ◽  
Tracking System ◽  
Subjective Evaluation ◽  
Evaluation Metrics ◽  
Visual Fatigue ◽  
Evaluation Result ◽  
Enhancement Technique ◽  
Quality Feedback ◽  
Long Time ◽  
Manipulation Task

A novel video definition enhancement technique for space manipulation task is presented in this paper. In contrast to other techniques, we implement our algorithm by considering both the feedback of the image quality (IQ) and the correction of the visual fatigue factor simultaneously. First, when designing the objective IQ evaluation metrics, we employ both the subjective evaluation result of the IQ and the information of the attention region to improve their performances. The canonical correlation analysis technique is used to build the connection between the subjective evaluation results and the objective ones. The eye tracking system is employed to search the location of the visual attention. Second, a denoising and enhancement technique in wavelet domain is developed to improve the imaging definition. The whole calculation process is monitored by the feedback of the objective IQ evaluation metrics mentioned above. The evaluation result of IQ is also corrected by some visual fatigue factors since the space tasks are always a long-time mission. The face recognition technique will be included in our system in the future to detect and analyze the visual fatigue, although it is not developed currently. Extensive experimental results have shown the effectivity of our proposed technique.

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