Tile-Based Panoramic View in Mobile Devices

2013 ◽  
Vol 284-287 ◽  
pp. 3487-3491
Author(s):  
Kian Lam Tan ◽  
Chen Kim Lim ◽  
Abdullah Zawawi Talib
Keyword(s):  
High Resolution ◽  
Mobile Devices ◽  
Mobile Device ◽  
Mobile Platform ◽  
High Definition ◽  
Panoramic View ◽  
Limited Bandwidth ◽  
Panoramic Views

Cylindrical panoramic view is a 360-degrees horizontal representation of a certain scene. The user can navigate interactively through the scene and change their view angles. Basically, panoramic views are often high-resolution, high-definition and consume a significant amount of bandwidth for transmission through Internet in mobile platform. In this paper, a method is proposed by combining a proposed tile-based algorithm with scrollViewDidScroll protocol of the iOS platform. With the tile-based algorithm, the panoramic views are divided into tiles and only tiles of interest are viewed on the mobile screen. Besides, the scrollViewDidScroll protocol of the iOS platform is used to link back the end of panoramic view with the start of the panoramic view to produce a cylindrical panoramic view. From here, the user can view the same output as panoramic views on a mobile device but using limited bandwidth, memory, and number of processors. Based on the evaluation, the respondents gave favorable response to the method.

Low-Cost Methods for Generating Panoramic Views for a Mobile Virtual Heritage Application and its Application to the Heritage Zone of George Town Malaysia

2011 ◽  
Vol 2 (4) ◽  
pp. 58-73 ◽  
Author(s):  
Chen Kim Lim ◽  
Kian Lam Tan ◽  
Abdullah Zawawi bin Haji Talib
Keyword(s):  
Interface Design ◽  
Low Cost ◽  
Computational Cost ◽  
Mobile Platform ◽  
Panoramic View ◽  
Heritage Sites ◽  
Clear Vision ◽  
Key Aspects ◽  
George Town ◽  
Panoramic Views

With rapid advancement of technology, people can roam around the virtual world through the aid of the Internet. One of these advances is a photographic technique called panoramic view where the images are captured with elongated field of view using specialized software or equipments. One popular software for generating panoramic views is Apple Inc.’s QuickTime VR (QTVR). However, iphone Operating System (iOS) does not support the existing QTVR software. Therefore, a low-cost method for generating panoramic views on mobile platform is proposed. The proposed method is to store finite images in an array in order to generate a 360o panoramic view from different angles of the heritage sites. This method can be supported various platforms and can be installed in any mobile device without using intermediate software to convert the image file format. The key aspects of the iOS User Experience (UX) are also explored from the perspectives of Model-View-Control (MVC) strategies. The outcome is 360o cylindrical panoramic views that allow the user to gain a clear vision around historical monuments with standardize iOS interface design on a mobile platform using lower computational cost but with similar quality of production. The results of the evaluation have shown that the application is successfully implemented in George Town, Malaysia.

Low-Cost Methods for Generating Panoramic Views for a Mobile Virtual Heritage Application and its Application to the Heritage Zone of George Town Malaysia

2013 ◽  
pp. 100-114
Author(s):  
Chen Kim Lim ◽  
Kian Lam Tan ◽  
Abdullah Zawawi bin Haji Talib
Keyword(s):  
Interface Design ◽  
Low Cost ◽  
Computational Cost ◽  
Mobile Platform ◽  
Panoramic View ◽  
Heritage Sites ◽  
Clear Vision ◽  
Key Aspects ◽  
George Town ◽  
Panoramic Views

With rapid advancement of technology, people can roam around the virtual world through the aid of the Internet. One of these advances is a photographic technique called panoramic view where the images are captured with elongated field of view using specialized software or equipments. One popular software for generating panoramic views is Apple Inc.’s QuickTime VR (QTVR). However, iphone Operating System (iOS) does not support the existing QTVR software. Therefore, a low-cost method for generating panoramic views on mobile platform is proposed. The proposed method is to store finite images in an array in order to generate a 360o panoramic view from different angles of the heritage sites. This method can be supported various platforms and can be installed in any mobile device without using intermediate software to convert the image file format. The key aspects of the iOS User Experience (UX) are also explored from the perspectives of Model-View-Control (MVC) strategies. The outcome is 360o cylindrical panoramic views that allow the user to gain a clear vision around historical monuments with standardize iOS interface design on a mobile platform using lower computational cost but with similar quality of production. The results of the evaluation have shown that the application is successfully implemented in George Town, Malaysia.

Modulations of Amplitude in Mobile Acoustical Heritage

2013 ◽  
Vol 284-287 ◽  
pp. 498-502
Author(s):  
Chen Kim Lim ◽  
Abdullah Zawawi Talib ◽  
Kian Lam Tan
Keyword(s):  
Cultural Heritage ◽  
Mobile Devices ◽  
Programming Method ◽  
Action Space ◽  
Mobile Platform ◽  
Panoramic View ◽  
User Interactions ◽  
Sound Changes ◽  
The One

Nowadays, cultural heritage has been preserved digitally more than physically. However, most of the research works have been focusing more on preservation of video elements even though preservation of audio is equally important. In this paper, the possibilities of generating different sounds in an acoustical heritage through the modulations of sound characteristics are explored on mobile devices. The modulations of the amplitude are based on tiles. In the proposed method, the user uses the one-tap gesture to initiate the start of sound changes on the physical interface of an immersive panoramic view on mobile platform by altering the amplitude of recorded audio piece and consequently producing different audible results. User interactions happen along the x and y-axes following the standard iOS system coordinate. This paper also demonstrates the programming method based on tiles and direct modulations of acoustical heritage in panoramic view with the interaction of the users in order to provide enhanced sensorial audio experience and acoustical engagement in action space on mobile platform. The result of the evaluation has shown that the volume playback has different amplitudes from the different coordinates that the users have tapped on.

Authentication System for Biometric Applications Using Mobile Devices

2013 ◽  
Vol 457-458 ◽  
pp. 1224-1227
Author(s):  
Jian Feng Hu ◽  
Zhen Dong Mu
Keyword(s):  
Information Security ◽  
Mobile Devices ◽  
Information Exchange ◽  
Mobile Platform ◽  
Eeg Signal ◽  
Information Protection ◽  
Security Research ◽  
Authentication System ◽  
Identification Tool

Mobile equipment has now become a new platform for information exchange, spend a lot of information exchange, how to effectively protect the mobile platform information security? Research has shown that, EEG signal can be used as identification tool, the user's information protection and good, this paper to protect the information security of mobile devices to research how to use EEG; the EEG signal is feasible for mobile equipment identification.

scholarly journals The Influence of the Frequency of the Internet Use on the Behavioral Relationship Model of the Mobile Device-Based Shopping

2016 ◽  
Vol 11 (6) ◽  
pp. 32 ◽  
Author(s):  
Shwu-Ing Wu ◽  
Rou Jyun Chen
Keyword(s):  
Mobile Devices ◽  
Mobile Device ◽  
Internet Use ◽  
Information Quality ◽  
Positive Influence ◽  
The Other ◽  
The Internet ◽  
Relationship Model ◽  
Significant Positive Influence

<p class="ArticleTitle">In recent years, the increasingly innovative and diverse mobile devices have significantly promoted the mobile device-based shopping. What factors influence this kind of shopping? Will consumers purchase things with mobile devices? These are two topics that need to be explored. Through the literature analysis and the empirical research, this study aims to analyze the quality of information, system, service and mobile devices on the mobile device-based shopping platform. Moreover, it studies the attitude of consumers towards mobile device-based shopping, their willingness to adopt the shopping method and the behavioral relationship model in the actual mobile device-based shopping as well as compares the groups of different frequencies of the Internet use in terms of the relationship model.</p>　　With the convenient sampling, this study made an investigation among some of those who had experienced shopping on such mobile devices as tablets or smart phones. The 765 retrieved valid copies of questionnaire were divided into three groups—“often”, “average” and “seldom” according to the frequency consumers undertook mobile device-based shopping and were then compared. The results showed that there were significant differences among the three groups in four relationship paths, including: 1) the information quality of the mobile device-based shopping platform has more significant positive influence on consumers’ attitude path of mobile device-based shopping in the “average” group than in the other two; 2) the service quality of the mobile device-based shopping platform has more significant positive influence on consumers’ attitude path of mobile device-based shopping in the “seldom” group than in the other two; 3) the preference for mobile device-based shopping has much significant positive influence on the behavior path of mobile device-based shopping in the “often” group. According to the research results, different groups have different behavior models. These results can serve as reference information in the decision-making of those who establish mobile device-based shopping platforms and manufacture mobile devices.

scholarly journals Trojan horses in mobile devices

2010 ◽  
Vol 7 (4) ◽  
pp. 813-822 ◽  
Author(s):  
Daniel Fuentes ◽  
Juan Álvarez ◽  
Juan Ortega ◽  
Luis Gonzalez-Abril ◽  
Francisco Velasco
Keyword(s):  
Mobile Devices ◽  
Mobile Device ◽  
Trojan Horse ◽  
Malicious Software ◽  
Loss Of Information ◽  
Malicious User ◽  
Communication Links

This paper focuses on the behavior of Trojan horses in mobile devices. This malicious software tries to steal information from a mobile device while the user is unaware. We describe the communication links through a Trojan horse installed into a mobile device. To demonstrate the effects of a Trojan horse infection we present a practical example on a PDA. Via SMS, the malicious user can access a user?s contacts information through the previous installation of the Trojan horse. The results show that this process means a loss of information and a quantified cost to the attacked user too. This paper proposes different solutions to avoid this malware and its effects.

scholarly journals Thermal management of mobile devices

2010 ◽  
Vol 14 (1) ◽  
pp. 115-124 ◽  
Author(s):  
Weijan Shen ◽  
Fock-Lai Tan
Keyword(s):  
Experimental Study ◽  
Phase Change ◽  
Phase Change Material ◽  
Mobile Devices ◽  
Thermal Management ◽  
Thermal Performance ◽  
Mobile Device ◽  
Phone Calls ◽  
Long Duration ◽  
Change Material

This paper presents the experimental study of using phase change material in the cooling of the mobile devices. It investigates the thermal performance of transient charging and discharging of mobile devices in three different situations; making phone calls frequently, making long duration calls, and making occasional calls. The results show that mobile devices are heated up fastest during the long duration usage. Experiments are also conducted to determine the effect of fins and effect of orientation of the mobile device on its thermal performance.

scholarly journals Testing Off-the-Shelf Optical Wireless LANs for Smart City Environments

Sensors ◽  
2021 ◽  
Vol 21 (16) ◽  
pp. 5451
Author(s):  
Loreto Pescosolido ◽  
Emilio Ancillotti ◽  
Andrea Passarella
Keyword(s):  
Light Intensity ◽  
Mobile Devices ◽  
Mobile Device ◽  
Smart City ◽  
Smart Cities ◽  
Wireless Lans ◽  
Optical Wireless ◽  
Operational Conditions ◽  
Stable Throughput ◽  
Indoor Scenarios

Optical wireless LANs (OWLs) constitute an emerging networking paradigm for indoor scenarios’ fit to different smart cities’ fields of applications. Commercial products employing this technology have been made available on the market in recent years. In this work, we investigate, through a set of indoor communication experiments based on commercially available products, how different environmental and usage modes affect the performance of the system, addressing the presence of multiple users, the position and mobility of the mobile devices, the handover among adjacent cells and the effect of background lighting. Our finding shows that the system is quite robust with respect to the variation of operational conditions. We show that, in most conditions, the links can reliably sustain a stable throughput, achieving at least 50% of the throughput achieved with using the maximum light intensity of the transmitting lamp, while they are affected in a very mild way by factors like position and height of the mobile device, and virtually unaffected by variations in the background light.

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