Image stablization for 2D barcode in handheld devices

2007 ◽  
Author(s):  
Chung-Hua Chu ◽  
De-Nian Yang ◽  
Ming-Syan Chen
Keyword(s):  
Handheld Devices ◽  
2D Barcode

RIFD-Based Tracing and Traceability System for Tan Sheep Mutton Products

2014 ◽  
Vol 556-562 ◽  
pp. 6076-6080
Author(s):  
Yu Guan Li ◽  
Wen Xing Bao
Keyword(s):  
Management System ◽  
Data Acquisition System ◽  
Handheld Devices ◽  
Rfid Technology ◽  
Processing Stage ◽  
Sheep Breeding ◽  
Traceability System ◽  
2D Barcode ◽  
Breeding Management ◽  
Tan Sheep

Based on the study of Tan sheep mutton products supply chain, this paper establishes a tracing and traceability system for Tan sheep mutton products by using RFID technology, internet of things, QR 2D barcode and EPC system . The whole system consists of four sub-systems i.e. Tan sheep breeding management system, Tan sheep data acquisition system based on handheld devices, Tan sheep slaughter and processing management system, tracing and traceability system of Tan sheep mutton products. The whole system is capable of identifying and tracing each Tan sheep, collecting data from Tan sheep breeding stage along with slaughter and processing stage automatically, implementing the function of providing tracing and traceability information inquiry finally.

The Evolution of Augmentative Communication and the Importance of Alternate Access

2011 ◽  
Vol 20 (1) ◽  
pp. 34-37 ◽  
Author(s):  
David Chapple
Keyword(s):  
Augmentative And Alternative Communication ◽  
Cell Phone ◽  
Handheld Devices ◽  
Alternative Communication ◽  
Access Methods ◽  
The Past ◽  
Communication Device ◽  
Internet Browser ◽  
A Cell ◽  
Development Of Language

Abstract Over the past 20 years, there have been many advances in the computer industry as well as in augmentative and alternative communication (AAC) devices. Computers are becoming more compact and have multiple purposes, such as the iPhone, which is a cell phone, mp3 player, and an Internet browser. AAC devices also have evolved to become multi-purpose devices; the most sophisticated devices have functionality similar to the iPhone and iPod. Recently, the idea of having the iPhone and iPad as a communication device was initiated with the development of language applications specifically for this format. It might be true that this idea could become the future of AAC devices; however, there are major access issues to overcome before the idea is a reality. This article will chronicle advancements in AAC devices, specifically on access methods, throughout the years, towards the transition to handheld devices. The newest technologies hold much promise with both features and affordability factors being highly attractive. Yet, these technologies must be made to incorporate alternate access if they are to meet their fullest potential as AAC tools.

The Promise and Problem of E-Assessment

2020 ◽  
pp. 299-313
Author(s):  
Michael D. Franzen ◽  
Matthew J. L. Page
Keyword(s):  
Psychological Assessment ◽  
Ecological Validity ◽  
Handheld Devices ◽  
Great Promise ◽  
Research Environment ◽  
New Methods ◽  
Desktop Computers ◽  
Commercial Environment

There has been an explosion in the development of electronic methods for psychological assessment. These include use of handheld devices, desktop computers, and platform-based Internet methods. This development has occurred separately in the commercial environment and in the research environment. This development of new methods presents great promise to improve the accuracy, ecological validity, and range of constructs in psychological assessment. However there are also many problems involved in the development of these electronic methods, including the need to train clinicians in their use, the need to develop safeguards for privacy, and the need to develop methods to ensure the integrity of the data collected. This chapter outlines some of the main considerations in moving forward.

scholarly journals Brain Health: Attitudes towards Technology Adoption in Older Adults

Healthcare ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 23
Author(s):  
Nadir G. Abdelrahman ◽  
Raza Haque ◽  
Molly E. Polverento ◽  
Andrea Wendling ◽  
Courtney M. Goetz ◽  
...  
Keyword(s):  
Older Adults ◽  
Technology Adoption ◽  
Physical Health ◽  
Social Engagement ◽  
Information Technologies ◽  
New Technology ◽  
Handheld Devices ◽  
Brain Health ◽  
Use Of Technology ◽  
Health Related

(1) Background: There is increasing scholarly support for the notion that properly implemented and used, technology can be of substantial benefit for older adults. Use of technology has been associated with improved self-rating of health and fewer chronic conditions. Use of technology such as handheld devices by older adults has the potential to improve engagement and promote cognitive and physical health. However, although, literature suggests some willingness by older adults to use technology, simultaneously there are reports of a more cautious attitude to its adoption. Our objective was to determine the opinions towards information technologies, with special reference to brain health, in healthy older adults either fully retired or still working in some capacity including older adult workers and retired adults living in an independent elderly living community. We were especially interested in further our understanding of factors that may play a role in technology adoption and its relevance to addressing health related issues in this population; (2) Methods: Two focus groups were conducted in an inner-city community. Participants were older adults with an interest in their general health and prevention of cognitive decline. They were asked to discuss their perceptions of and preferences for the use of technology. Transcripts were coded for thematic analysis; (3) Results: Seven common themes emerged from the focus group interviews: physical health, cognitive health, social engagement, organizing information, desire to learn new technology, advancing technology, and privacy/security; and (4) Conclusions: This study suggests that in order to promote the use of technology in older adults, one needs to consider wider contextual issues, not only device design per se, but the older adult’s rationale for using technology and their socio-ecological context.

scholarly journals Blur-readable two-dimensional barcode based on blur-invariant shape and geometric features

2021 ◽  
Vol 18 (2) ◽  
pp. 172988142199958
Author(s):  
Shundao Xie ◽  
Hong-Zhou Tan
Keyword(s):  
Circular Disk ◽  
Geometric Features ◽  
Two Dimensional ◽  
Common Solution ◽  
Ringing Artifacts ◽  
2D Barcode ◽  
Defocus Blur ◽  
Blurred Image ◽  
Decoding Accuracy ◽  
Invariant Shape

In recent years, the application of two-dimensional (2D) barcode is more and more extensive and has been used as landmarks for robots to detect and peruse the information. However, it is hard to obtain a sharp 2D barcode image because of the moving robot, and the common solution is to deblur the blurry image before decoding the barcode. Image deblurring is an ill-posed problem, where ringing artifacts are commonly presented in the deblurred image, which causes the increase of decoding time and the limited improvement of decoding accuracy. In this article, a novel approach is proposed using blur-invariant shape and geometric features to make a blur-readable (BR) 2D barcode, which can be directly decoded even when seriously blurred. The finder patterns of BR code consist of two concentric rings and five disjoint disks, whose centroids form two triangles. The outer edges of the concentric rings can be regarded as blur-invariant shapes, which enable BR code to be quickly located even in a blurred image. The inner angles of the triangle are of blur-invariant geometric features, which can be used to store the format information of BR code. When suffering from severe defocus blur, the BR code can not only reduce the decoding time by skipping the deblurring process but also improve the decoding accuracy. With the defocus blur described by circular disk point-spread function, simulation results verify the performance of blur-invariant shape and the performance of BR code under blurred image situation.

scholarly journals Real-Time Single Image Depth Perception in the Wild with Handheld Devices

Sensors ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 15
Author(s):  
Filippo Aleotti ◽  
Giulio Zaccaroni ◽  
Luca Bartolomei ◽  
Matteo Poggi ◽  
Fabio Tosi ◽  
...  
Keyword(s):  
Real Time ◽  
Depth Perception ◽  
Depth Estimation ◽  
Autonomous Driving ◽  
Estimation Methods ◽  
Handheld Devices ◽  
Single Image ◽  
Handheld Device ◽  
Time Performance ◽  
In The Wild

Depth perception is paramount for tackling real-world problems, ranging from autonomous driving to consumer applications. For the latter, depth estimation from a single image would represent the most versatile solution since a standard camera is available on almost any handheld device. Nonetheless, two main issues limit the practical deployment of monocular depth estimation methods on such devices: (i) the low reliability when deployed in the wild and (ii) the resources needed to achieve real-time performance, often not compatible with low-power embedded systems. Therefore, in this paper, we deeply investigate all these issues, showing how they are both addressable by adopting appropriate network design and training strategies. Moreover, we also outline how to map the resulting networks on handheld devices to achieve real-time performance. Our thorough evaluation highlights the ability of such fast networks to generalize well to new environments, a crucial feature required to tackle the extremely varied contexts faced in real applications. Indeed, to further support this evidence, we report experimental results concerning real-time, depth-aware augmented reality and image blurring with smartphones in the wild.

scholarly journals Unexpectedly high prevalence of asthenopia in Australian school children identified by the CISS survey tool

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Barbara M. Junghans ◽  
Serap Azizoglu ◽  
Sheila G. Crewther
Keyword(s):  
Handheld Devices ◽  
Vision Screening ◽  
School Students ◽  
Visual Discomfort ◽  
Survey Tool ◽  
School Aged Children ◽  
School Vision ◽  
Accommodative Convergence ◽  
The Mean ◽  
General School

Abstract Background To date there have been few systematic attempts to establish the general prevalence of asthenopia in unselected populations of school-aged children. Thus, the aim of this study was to determine whether the incorporation of Borsting et al’s 2003 Revised Convergence-Insufficiency Symptom Survey (CISS) into a general school vision screening could aid in the identification of children with visual discomfort and indicate the need for further investigation. Methods Vision screening of an unselected middle school population investigated and analysed the incidence of self-reported nearwork-related visual discomfort via the CISS along with distance and near visual acuities plus non-cycloplegic autorefraction using a Shin-Nippon NVision-K 5001. Results Of the 384 unselected students approached in Grades 6–9, 353 participated (92.2%, mean 13.2 ± 1.4 years). The mean CISS score for the population without amblyopia and/or strabismus (96.0% of all students) was 16.8 ± 0.6, i.e., 45% of students in this cohort had CISS scores greater than one standard deviation above the mean found by Borsting et al. in 2003 during their validation study of the CISS on 9 to 18 year old children without binocular anomalies. Regression analyses indicated significantly higher (p < 0.001) mean CISS scores for the 3.2% who were hyperopes ≥ + 2.00D by non-cycloplegic autorefraction (27.7 ± 14.7) and for those who were amblyopic (24.3 ± 6.6) or strabismic (34.0 ± 9.8). The mean CISS score of 31.6 ± 9.0 for non-amblyopic/strabismic students having near vision poorer than 0.1 LogMAR was significantly higher (p < 0.001) than for those with good acuity. Conclusion The most important finding of this study was the high incidence of asthenopia in an unselected population and that refractive status per se was not a major contributor to CISS scores. The results highlight the usefulness of the CISS questionnaire for assessment of visual discomfort in school vision screenings and the need for future exploration of near binocular vision status as a potential driver of asthenopia in school students, especially given current trends for frequent daily use of computers and handheld devices and necessarily prolonged accommodative-convergence effort at near, both at school and at home.

scholarly journals PDR/INS/WiFi Integration Based on Handheld Devices for Indoor Pedestrian Navigation

Micromachines ◽  
2015 ◽  
Vol 6 (6) ◽  
pp. 793-812 ◽  
Author(s):  
Yuan Zhuang ◽  
Haiyu Lan ◽  
You Li ◽  
Naser El-Sheimy
Keyword(s):  
Handheld Devices ◽  
Pedestrian Navigation
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