Different System Error Rates in Augmented Reality Interface Affected Cognitive Stress

2021 ◽  
Vol 65 (1) ◽  
pp. 1087-1088
Author(s):  
Kiana Kia ◽  
Jaejin Hwang ◽  
Hakim Ishak ◽  
James Wilson ◽  
In-Sop Kim ◽  
...  
Keyword(s):  
Augmented Reality ◽  
Error Rates ◽  
System Error ◽  
Cognitive Stress

Augmented Reality Text Style Readability with See-Through Head-Mounted Displays in Industrial Context

2013 ◽  
Vol 22 (2) ◽  
pp. 171-190 ◽  
Author(s):  
Michele Fiorentino ◽  
Saverio Debernardis ◽  
Antonio E. Uva ◽  
Giuseppe Monno
Keyword(s):  
Augmented Reality ◽  
Completion Time ◽  
Presentation Mode ◽  
Error Rates ◽  
Head Mounted Display ◽  
Head Mounted Displays ◽  
Specific Meaning ◽  
Industrial Environments ◽  
Effective Visualization ◽  
Effective Use

The application of augmented reality in industrial environments requires an effective visualization of text on a see-through head-mounted display (HMD). The main contribution of this work is an empirical study of text styles as viewed through a monocular optical see-through display on three real workshop backgrounds, examining four colors and four different text styles. We ran 2,520 test trials with 14 participants using a mixed design and evaluated completion time and error rates. We found that both presentation mode and background influence the readability of text, but there is no interaction effect between these two variables. Another interesting aspect is that the presentation mode differentially influences completion time and error rate. The present study allows us to draw some guidelines for an effective use of AR text visualization in industrial environments. We suggest maximum contrast when reading time is important, and the use of colors to reduce errors. We also recommend a colored billboard with transparent text where colors have a specific meaning.

scholarly journals Development of a Real-Time Detection System for Augmented Reality Driving

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Kuei-Shu Hsu ◽  
Chia-Sui Wang ◽  
Jinn-Feng Jiang ◽  
Hung-Yuan Wei
Keyword(s):  
Virtual Reality ◽  
Augmented Reality ◽  
Real Time ◽  
Detection System ◽  
Real Life ◽  
Error Rates ◽  
Interactive Effects ◽  
Gaming Technology ◽  
Augmented Reality Technology ◽  
Real Scenario

Augmented reality technology is applied so that driving tests may be performed in various environments using a virtual reality scenario with the ultimate goal of improving visual and interactive effects of simulated drivers. Environmental conditions simulating a real scenario are created using an augmented reality structure, which guarantees the test taker’s security since they are not subject to real-life elements and dangers. Furthermore, the accuracy of tests conducted through virtual reality is not influenced by either environmental or human factors. Driver posture is captured in real time using Kinect’s depth perception function and then applied to driving simulation effects that are emulated by Unity3D’s gaming technology. Subsequently, different driving models may be collected through different drivers. In this research, nearly true and realistic street environments are simulated to evaluate driver behavior. A variety of different visual effects are easily available to effectively reduce error rates, thereby significantly improving test security as well as the reliability and reality of this project. Different situation designs are simulated and evaluated to increase development efficiency and build more security verification test platforms using such technology in conjunction with driving tests, vehicle fittings, environmental factors, and so forth.

scholarly journals A Broken System: Error Rates in Capital Cases, 1973-1995

2000 ◽  
Author(s):  
James S. Liebman ◽  
Jeffrey Fagan ◽  
Valerie West
Keyword(s):  
Error Rates ◽  
System Error ◽  
Capital Cases

scholarly journals HoloPointer: a virtual augmented reality pointer for laparoscopic surgery training

2020 ◽  
Author(s):  
Florian Heinrich ◽  
Florentine Huettl ◽  
Gerd Schmidt ◽  
Markus Paschold ◽  
Werner Kneist ◽  
...  
Keyword(s):  
Laparoscopic Surgery ◽  
Augmented Reality ◽  
Performance Metrics ◽  
Standard Condition ◽  
Error Rates ◽  
Task Completion ◽  
Training Simulator ◽  
Surgery Training ◽  
Surgical Trainees ◽  
Economy Of Movement

Abstract Purpose In laparoscopic surgery training, experts guide novice physicians to desired instrument positions or indicate relevant areas of interest. These instructions are usually given via verbal communication or using physical pointing devices. To facilitate a sterile work flow and to improve training, new guiding methods are needed. This work proposes to use optical see-through augmented reality to visualize an interactive virtual pointer on the laparoscopic. Methods After an interdisciplinary development, the pointer’s applicability and feasibility for training was evaluated and it was compared to a standard condition based on verbal and gestural communication only. In this study, ten surgical trainees were guided by an experienced trainer during cholecystectomies on a laparoscopic training simulator. All trainees completed a virtual cholecystectomy with and without the interactive virtual pointer in alternating order. Measures included procedure time, economy of movement and error rates. Results Results of standardized variables revealed significantly improved economy of movement (p = 0.047) and error rates (p = 0.047), as well as an overall improved user performance (Total z-score; p = 0.031) in conditions using the proposed method. Conclusion The proposed HoloPointer is a feasible and applicable tool for laparoscopic surgery training. It improved objective performance metrics without prolongation of the task completion time in this pre-clinical setup.

Some acoustic effects of speaking style on utterances for automatic speaker verification

1999 ◽  
Vol 29 (2) ◽  
pp. 115-128 ◽  
Author(s):  
Jana Dankovičová ◽  
Francis Nolan
Keyword(s):  
Speaker Verification ◽  
Error Rates ◽  
Acoustic Properties ◽  
Training Phase ◽  
Vowel Quality ◽  
Cognitive Stress ◽  
Formant Frequencies ◽  
Digit Sequence ◽  
Speaking Style

This paper reports the results of an experiment on the effects of six speaking styles on some of the acoustic properties of speech. The experiment was part of an exploration of within-speaker variation in connection with automatic speaker verification (ASV), pursuing the hypothesis that the elicitation of style variation in the training phase of an ASV system (‘structured training’) would enhance the performance of the system. Swedish-speaking subjects produced a digit sequence at varying speaking rates and loudness levels, and also with simulated denasality (pinched nose) and under cognitive stress. Duration of vowels and consonants, and formant frequencies of vowels, were measured. A number of consistent patterns of variation emerged for duration and vowel quality and are reported here. The discussion explores the relation between the patterns observed and the success, or in the case of speech under stress the failure, of structured training in reducing the error rates in ASV.

Perceptual Characteristics of Consonant Production in Apraxia of Speech and Aphasia

2019 ◽  
Vol 28 (4) ◽  
pp. 1411-1431 ◽  
Author(s):  
Lauren Bislick ◽  
William D. Hula
Keyword(s):  
Error Rate ◽  
Error Rates ◽  
Group Differences ◽  
Diagnostic Process ◽  
Apraxia Of Speech ◽  
Contextual Variables ◽  
Error Type ◽  
Type Distribution ◽  
Phonetic Features ◽  
Syllable Position

Purpose This retrospective analysis examined group differences in error rate across 4 contextual variables (clusters vs. singletons, syllable position, number of syllables, and articulatory phonetic features) in adults with apraxia of speech (AOS) and adults with aphasia only. Group differences in the distribution of error type across contextual variables were also examined. Method Ten individuals with acquired AOS and aphasia and 11 individuals with aphasia participated in this study. In the context of a 2-group experimental design, the influence of 4 contextual variables on error rate and error type distribution was examined via repetition of 29 multisyllabic words. Error rates were analyzed using Bayesian methods, whereas distribution of error type was examined via descriptive statistics. Results There were 4 findings of robust differences between the 2 groups. These differences were found for syllable position, number of syllables, manner of articulation, and voicing. Group differences were less robust for clusters versus singletons and place of articulation. Results of error type distribution show a high proportion of distortion and substitution errors in speakers with AOS and a high proportion of substitution and omission errors in speakers with aphasia. Conclusion Findings add to the continued effort to improve the understanding and assessment of AOS and aphasia. Several contextual variables more consistently influenced breakdown in participants with AOS compared to participants with aphasia and should be considered during the diagnostic process. Supplemental Material https://doi.org/10.23641/asha.9701690

Amp Up Your Treatment With Augmented Reality

ASHA Leader ◽  
2013 ◽  
Vol 18 (9) ◽  
pp. 14-14 ◽  
Keyword(s):  
Augmented Reality

Amp Up Your Treatment With Augmented Reality

Planning, simulation, and augmented reality for robotic cardiac procedures: The STARS system of the ChIR team

2003 ◽  
Vol 15 (2) ◽  
pp. 141-156 ◽  
Author(s):  
eve Coste-Maniere ◽  
Louai Adhami ◽  
Fabien Mourgues ◽  
Alain Carpentier
Keyword(s):  
Augmented Reality ◽  
Cardiac Procedures

The Latin Square Task as a Measure of Relational Reasoning

2020 ◽  
Vol 36 (2) ◽  
pp. 296-302 ◽  
Author(s):  
Luke J. Hearne ◽  
Damian P. Birney ◽  
Luca Cocchi ◽  
Jason B. Mattingley
Keyword(s):  
Brain Imaging ◽  
Response Times ◽  
Latin Square ◽  
Error Rates ◽  
Functional Brain Imaging ◽  
Inspection Time ◽  
Relational Reasoning ◽  
Validity And Reliability ◽  
The Stability ◽  
Test Retest Reliability

Abstract. The Latin Square Task (LST) is a relational reasoning paradigm developed by Birney, Halford, and Andrews (2006) . Previous work has shown that the LST elicits typical reasoning complexity effects, such that increases in complexity are associated with decrements in task accuracy and increases in response times. Here we modified the LST for use in functional brain imaging experiments, in which presentation durations must be strictly controlled, and assessed its validity and reliability. Modifications included presenting the components within each trial serially, such that the reasoning and response periods were separated. In addition, the inspection time for each LST problem was constrained to five seconds. We replicated previous findings of higher error rates and slower response times with increasing relational complexity and observed relatively large effect sizes (η2p > 0.70, r > .50). Moreover, measures of internal consistency and test-retest reliability confirmed the stability of the LST within and across separate testing sessions. Interestingly, we found that limiting the inspection time for individual problems in the LST had little effect on accuracy relative to the unconstrained times used in previous work, a finding that is important for future brain imaging experiments aimed at investigating the neural correlates of relational reasoning.

Does Viotin Activate Violin More Than Viocin?

2014 ◽  
Vol 61 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Manuel Perea ◽  
Victoria Panadero
Keyword(s):  
Word Recognition ◽  
Visual Word Recognition ◽  
Developmental Dyslexia ◽  
Computational Models ◽  
Error Rates ◽  
Visual Word ◽  
Base Word ◽  
Similar Response ◽  
Skilled Readers ◽  
Young Readers

The vast majority of neural and computational models of visual-word recognition assume that lexical access is achieved via the activation of abstract letter identities. Thus, a word’s overall shape should play no role in this process. In the present lexical decision experiment, we compared word-like pseudowords like viotín (same shape as its base word: violín) vs. viocín (different shape) in mature (college-aged skilled readers), immature (normally reading children), and immature/impaired (young readers with developmental dyslexia) word-recognition systems. Results revealed similar response times (and error rates) to consistent-shape and inconsistent-shape pseudowords for both adult skilled readers and normally reading children – this is consistent with current models of visual-word recognition. In contrast, young readers with developmental dyslexia made significantly more errors to viotín-like pseudowords than to viocín-like pseudowords. Thus, unlike normally reading children, young readers with developmental dyslexia are sensitive to a word’s visual cues, presumably because of poor letter representations.

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