Journal of perceptual imaging最新文献_第3页

Artistic Style Meets Artificial Intelligence 艺术风格遇上人工智能

Journal of perceptual imaging Pub Date : 2021-01-01 DOI: 10.2352/j.percept.imaging.2021.4.3.030501

Suk Kyoung Choi, S. DiPaola, Hannu Töyrylä

引用次数: 1

Study of Bomb Technician Threat Identification Performance on Degraded X-ray Images 炸弹技术员对退化x射线图像的威胁识别性能研究

Journal of perceptual imaging Pub Date : 2021-01-01 DOI: 10.2352/J.PERCEPT.IMAGING.2021.4.1.010502

J. Glover, Praful Gupta, N. Paulter, A. Bovik

{"title":"Study of Bomb Technician Threat Identification Performance on Degraded X-ray Images","authors":"J. Glover, Praful Gupta, N. Paulter, A. Bovik","doi":"10.2352/J.PERCEPT.IMAGING.2021.4.1.010502","DOIUrl":"https://doi.org/10.2352/J.PERCEPT.IMAGING.2021.4.1.010502","url":null,"abstract":"Abstract Portable X-ray imaging systems are routinely used by bomb squads throughout the world to image the contents of suspicious packages and explosive devices. The images are used by bomb technicians to determine whether or not packages contain explosive devices or device components. In events of positive detection, the images are also used to understand device design and to devise countermeasures. The quality of the images is considered to be of primary importance by users and manufacturers of these systems, since it affects the ability of the users to analyze the images and to detect potential threats. As such, there exist national standards that set minimum acceptable image-quality levels for the performance of these imaging systems. An implicit assumption is that better image quality leads to better user identification of components in explosive devices and, therefore, better informed plans to render them safe. However, there is no previously published experimental work investigating this.Toward advancing progress in this direction, the authors developed the new NIST-LIVE X-ray improvised explosive device (IED) image-quality database. The database consists of: a set of pristine X-ray images of IEDs and benign objects; a larger set of distorted images of varying quality of the same objects; ground-truth IED component labels for all images; and human task-performance results locating and identifying the IED components. More than 40 trained U.S. bomb technicians were recruited to generate the human task-performance data. They use the database to show that identification probabilities for IED components are strongly correlated with image quality. They also show how the results relate to the image-quality metrics described in the current U.S. national standard for these systems, and how their results can be used to inform the development of baseline performance requirements. They expect these results to directly affect future revisions of the standard.","PeriodicalId":73895,"journal":{"name":"Journal of perceptual imaging","volume":"231 1","pages":"10502-1"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84060731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Psychophysical Study of Human Visual Perception of Flicker Artifacts in Automotive Digital Mirror Replacement Systems 汽车数字后视镜更换系统中闪烁伪影人眼视觉感知的心理物理研究

Journal of perceptual imaging Pub Date : 2021-01-01 DOI: 10.2352/J.PERCEPT.IMAGING.2021.4.1.010401

Nicolai Behmann, Sousa Weddige, H. Blume

{"title":"Psychophysical Study of Human Visual Perception of Flicker Artifacts in Automotive Digital Mirror Replacement Systems","authors":"Nicolai Behmann, Sousa Weddige, H. Blume","doi":"10.2352/J.PERCEPT.IMAGING.2021.4.1.010401","DOIUrl":"https://doi.org/10.2352/J.PERCEPT.IMAGING.2021.4.1.010401","url":null,"abstract":"Abstract Aliasing effects due to time-discrete capturing of amplitude-modulated light with a digital image sensor are perceived as flicker by humans. Especially when observing these artifacts in digital mirror replacement systems, they are annoying and can pose a risk. Therefore, ISO 16505 requires flicker-free reproduction for 90 % of people in these systems. Various psychophysical studies investigate the influence of large-area flickering of displays, environmental light, or flickering in television applications on perception and concentration. However, no detailed knowledge of subjective annoyance/irritation due to flicker from camera-monitor systems as a mirror replacement in vehicles exist so far, but the number of these systems is constantly increasing. This psychophysical study used a novel data set from real-world driving scenes and synthetic simulation with synthetic flicker. More than 25 test persons were asked to quantify the subjective annoyance level of different flicker frequencies, amplitudes, mean values, sizes, and positions. The results show that for digital mirror replacement systems, human subjective annoyance due to flicker is greatest in the 15 Hz range with increasing amplitude and magnitude. Additionally, the sensitivity to flicker artifacts increases with the duration of observation.","PeriodicalId":73895,"journal":{"name":"Journal of perceptual imaging","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68835350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low-contrast Acuity Under Strong Luminance Dynamics and Potential Benefits of Divisive Display Augmented Reality 强亮度动态下的低对比度敏锐度和分裂显示增强现实的潜在优势

Journal of perceptual imaging Pub Date : 2021-01-01 DOI: 10.2352/j.percept.imaging.2020.3.3.030501

C. Hung, Chloe Callahan-Flintoft, P. Fedele, Kim F. Fluitt, Barry D. Vaughan, Anthony J. Walker, Min Wei

{"title":"Low-contrast Acuity Under Strong Luminance Dynamics and Potential Benefits of Divisive Display Augmented Reality","authors":"C. Hung, Chloe Callahan-Flintoft, P. Fedele, Kim F. Fluitt, Barry D. Vaughan, Anthony J. Walker, Min Wei","doi":"10.2352/j.percept.imaging.2020.3.3.030501","DOIUrl":"https://doi.org/10.2352/j.percept.imaging.2020.3.3.030501","url":null,"abstract":"Abstract Understanding and predicting outdoor visual performance in augmented reality (AR) requires characterizing and modeling vision under strong luminance dynamics, including luminance differences of 10000-to-1 in a single image (high dynamic range, HDR). Classic models of vision, based on displays with 100-to-1 luminance contrast, have limited ability to generalize to HDR environments. An important question is whether low-contrast visibility, potentially useful for titrating saliency for AR applications, is resilient to saccade-induced strong luminance dynamics. The authors developed an HDR display system with up to 100,000-to-1 contrast and assessed how strong luminance dynamics affect low-contrast visual acuity. They show that, immediately following flashes of 25× or 100× luminance, visual acuity is unaffected at 90% letter Weber contrast and only minimally affected at lower letter contrasts (up to +0.20 LogMAR for 10% contrast). The resilience of low-contrast acuity across luminance changes opens up research on divisive display AR (ddAR) to effectively titrate salience under naturalistic HDR luminance.","PeriodicalId":73895,"journal":{"name":"Journal of perceptual imaging","volume":"46 1","pages":"10501-1"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78481700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

FP-Nets for Blind Image Quality Assessment 用于盲图像质量评价的FP-Nets

Journal of perceptual imaging Pub Date : 2021-01-01 DOI: 10.2352/J.PERCEPT.IMAGING.2021.4.1.010402

Philipp Grüning, E. Barth

引用次数: 2

Cartography as Spatial Representation: A new assessment of the competing advantages and drawbacks across fields of science. 作为空间表征的地图学:跨科学领域竞争优势与劣势的新评估。

Journal of perceptual imaging Pub Date : 2021-01-01 Epub Date: 2021-01-18 DOI: 10.2352/ISSN.2470-1173.2021.11.HVEI-156

Christopher W Tyler

引用次数: 0

From the Editors 编辑的话

Journal of perceptual imaging Pub Date : 2021-01-01 DOI: 10.2352/j.percept.imaging.2021.4.2.020101

B. Rogowitz, T. Pappas

引用次数: 0

The Difference in Impression between Genuine and Artificial Leather: Quantifying the Feeling of Authenticity 真皮与人造革的印象差异:真实感的量化

Journal of perceptual imaging Pub Date : 2020-03-01 DOI: 10.2352/j.percept.imaging.2020.3.2.020501

Shuhei Watanabe, S. Tominaga, T. Horiuchi

引用次数: 3

Using Gaussian Spectra to Derive a Hue-linear Color Space 利用高斯光谱推导色相线性色彩空间

Journal of perceptual imaging Pub Date : 2020-03-01 DOI: 10.2352/j.percept.imaging.2020.3.2.020401

Luke Hellwig, M. Fairchild

引用次数: 0

Contribution of Motion Parallax and Stereopsis to the Sense of Presence in Virtual Reality 运动视差和立体视觉对虚拟现实中存在感的贡献

Journal of perceptual imaging Pub Date : 2020-03-01 DOI: 10.2352/j.percept.imaging.2020.3.2.020502

Siavash Eftekharifar, A. Thaler, N. Troje

{"title":"Contribution of Motion Parallax and Stereopsis to the Sense of Presence in Virtual Reality","authors":"Siavash Eftekharifar, A. Thaler, N. Troje","doi":"10.2352/j.percept.imaging.2020.3.2.020502","DOIUrl":"https://doi.org/10.2352/j.percept.imaging.2020.3.2.020502","url":null,"abstract":"Abstract The sense of presence is defined as a subjective feeling of being situated in an environment and occupying a location therein. The sense of presence is a defining feature of virtual environments. In two experiments, we aimed at investigating the relative contribution\u0000 of motion parallax and stereopsis to the sense of presence, using two versions of the classic pit room paradigm in virtual reality. In Experiment 1, participants were asked to cross a deep abyss between two platforms on a narrow plank. Participants completed the task under three experimental\u0000 conditions: (1) when the lateral component of motion parallax was disabled, (2) when stereopsis was disabled, and (3) when both stereopsis and motion parallax were available. As a subjective measure of presence, participants completed a presence questionnaire after each condition.\u0000 Additionally, electrodermal activity (EDA) was recorded as a measure of anxiety. In Experiment 1, EDA responses were significantly higher with restricted motion parallax as compared to the other two conditions. However, no difference was observed in terms of the subjective presence scores\u0000 across the three conditions. To test whether these results were due to the nature of the environment, participants in Experiment 2 experienced a slightly less stressful environment, where they were asked to stand on a ledge and drop virtual balls to specified targets into the abyss. The same\u0000 experimental manipulations were used as in Experiment 1. Again, the EDA responses were significantly higher when motion parallax was impaired as compared to when stereopsis was disabled. The results of the presence questionnaire revealed a reduced sense of presence with impaired motion parallax\u0000 compared to the normal viewing condition. Across the two experiments, our results unexpectedly demonstrate that presence in the virtual environments is not necessarily linked to EDA responses elicited by affective situations as has been implied by earlier studies.","PeriodicalId":73895,"journal":{"name":"Journal of perceptual imaging","volume":"3 1","pages":"20502-1"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78336413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8