A Platform for Measuring the Response Time of Smartphones

2019 ◽  
Vol 63 (5) ◽  
pp. 50403-1-50403-15
Author(s):  
Edward T.-H. Chu ◽  
Heng-Chih Hsieh
Keyword(s):  
Response Time ◽  
Social Networking ◽  
User Experience ◽  
Graphical User Interface ◽  
Response Times ◽  
Low Cost ◽  
Mobile App ◽  
Image Processing Techniques ◽  
Processing Techniques ◽  
Share Information

Abstract Smartphones are playing an increasingly important role in helping people share information and communicate with each other, as evidenced by an increasing number of applications (or apps), including news, search engine, mailbox, and social networking apps. The more heavily people rely on their phones, the more they begin to take the term “user experience” into consideration when buying a smartphone. Obviously, the key to providing a good user experience is to minimize the response time of each graphical user interface (GUI) operation, such as a touch, slide, or flick. Thus, it is crucial for smartphone manufacturers and mobile app developers to measure the response times to enhance the performance of the device or application. In this article, the authors present the SMArtphone Response Time measuring platform (SMART), a novel and low-cost platform for measuring the response time of a smartphone. SMART consists of a normal 30-fps (frame per second) webcam and a mirror. The proposed platform first simultaneously records the changes on a smartphone screen and the GUI operation shown in the mirror. It then adopts image processing techniques to analyze the latency of the GUI operation. The authors’ validation results show that the measurement error of SMART is less than 1/30 s, which means that SMART is a practical solution for measuring the latency of GUI operations. In addition, they adopted SMART for the measurements and analysis of six different commercial smartphones to further demonstrate its applicability.

Tradeoffs Between Forensics and Anti-Forensics of Digital Images

2018 ◽  
pp. 2124-2138
Author(s):  
Priya Makarand Shelke ◽  
Rajesh Shardanand Prasad
Keyword(s):  
Social Networking ◽  
Digital Images ◽  
Image Authentication ◽  
Visual Media ◽  
Smart Phones ◽  
The Internet ◽  
Image Processing Techniques ◽  
Image Tampering ◽  
Processing Techniques ◽  
And Storage

Over past few years, we are the spectators of the evolution in the field of information technology, telecommunication and networking. Due to the advancement of smart phones, easy and inexpensive access to the internet and popularity of social networking, capture and use of digital images has increased drastically. Image processing techniques are getting developed at rapidly and at the same time easy to use image tampering soft-wares are also getting readily available. If tampered images are misused, big troubles having deep moral, ethical and lawful allegations may arise. Due to high potential of visual media and the ease in their capture, distribution and storage, we rarely find a field where digital visual data is not used. The value of image as evidence of event must be carefully assessed and it is a call for from different fields of applications. Therefore, in this age of fantasy, image authentication has become an issue of utmost importance.

Unravelling the relationship between response time and user experience in mobile applications

2020 ◽  
Vol 30 (5) ◽  
pp. 1353-1382
Author(s):  
Mengli Yu ◽  
Ronggang Zhou ◽  
Zhao Cai ◽  
Chee-Wee Tan ◽  
Huiwen Wang
Keyword(s):  
Response Time ◽  
User Experience ◽  
Mobile Applications ◽  
Response Times ◽  
Negative Influence ◽  
Three Dimensions ◽  
Network Environment ◽  
Content Type ◽  
Varied Response ◽  
The Impact

PurposeThis study examines the impact of response time on user experience for mobile applications and considers the moderating influence of gender and network environment on this relationship.Design/methodology/approachAn experiment was conducted with 50 young adults to evaluate their user experience of a mobile application that simulates variations in network environment and response time. User experience was evaluated based on the three constituent dimensions of tolerance, acceptance, and satisfaction.FindingsAnalytical results demonstrate that response time not only adversely affects user experience of mobile applications, but that this effect is not homogeneous across the three dimensions of tolerance, acceptance and satisfaction. The findings also illustrate that gender moderates the effect of response time on user experience, however, the negative influence is more salient for males than females, which is opposite to our hypothesis. The joint moderating influence of gender and network environment turned out to be partly significant.Practical implicationsBy illuminating users' tolerance, acceptance, and satisfaction with varied response times, findings from this study can inform the design of mobile applications such that desired levels of user experience can be assured with minimum resources.Originality/valueAlthough response time has been hailed as a key determinant of user experience for desktop applications, there is a paucity of studies that have investigated the impact of response time on user experience for mobile applications. Furthermore, prior research on response time neglects the multi-dimensional nature of user experience. This study bridges the above mentioned knowledge gaps by delineating user experience into its constituent dimensions and clarifying the effects of response time on each of these dimensions.

Development of Travel Reservation System for Mobile Platform

2014 ◽  
Vol 644-650 ◽  
pp. 3099-3102
Author(s):  
Lin Jun Sun
Keyword(s):  
User Experience ◽  
Low Cost ◽  
Mobile App ◽  
Mobile Platform ◽  
Practical Application ◽  
Ui Design ◽  
Cross Platform ◽  
Reservation System ◽  
Business Process Optimization ◽  
Client Side

To overcome deficiencies in the mobile tourism applications such as underutilization of mobile device capabilities and poor user experience, a low-cost and cross-platform mobile travel reservation system was designed. Based on business process optimization of client-side, the mobile app was built by using HTML5, CSS3 and jQuery technology. Additionally, the system uses Ajax asynchronous interactive technology to improve response time. The practical application of this system shows that it can work equally well on multiple mobile platform. The characteristics of flat UI design, convenient operation and good user experience stretch its application prospects.

Low Cost Experimental Vibration Analysis of a Cantilever Beam Under Base Excitation

2014 ◽  
Author(s):  
Pezhman A. Hassanpour ◽  
Andrea J. Helmns
Keyword(s):  
Cantilever Beam ◽  
Vibration Analysis ◽  
Low Cost ◽  
Low Frequency ◽  
Video Camera ◽  
Base Excitation ◽  
Image Processing Techniques ◽  
Digital Video Camera ◽  
Processing Techniques ◽  
Dimensionless Formulation

This paper presents the investigation of operational deflection shapes of vibration of a cantilever beam using a low-cost digital video camera, and by application of image processing techniques. The beam is uniform and under base excitation. The analytical model of the system is developed using dimensionless formulation. The analytical ODS’s are derived, and then compared with those found from experiment. The significance of this research is that it provides the researchers an inexpensive alternative tool for investigating the behavior of systems with low-frequency dynamics.

scholarly journals An Innovative Approach to Build a Low Cost Braille Embosser

2020 ◽  
pp. 823-826
Author(s):  
Vaibhavi Naik ◽  
Amey Joshi ◽  
Ritesh Gupta ◽  
Kaustubha Pavaskar ◽  
Prajakta Tanksali
Keyword(s):  
Visually Impaired ◽  
Low Cost ◽  
Normal Person ◽  
Text File ◽  
Image Processing Techniques ◽  
Visually Impaired People ◽  
Impaired People ◽  
Processing Techniques ◽  
Reading Interest ◽  
Maximum Content

Visually impaired people have to deal with various challenges since they cannot see anything with their eyes and even some visually impaired people are not able to read the content of their interest so they fail to gain knowledge from reading as much as a normal person can obtain. Visually impaired people have some content available in the braille format that they can read but not all content of their reading interest is available in the braille format. Therefore, braille embosser will help to make available the maximum content of their reading interest in the braille format at an affordable cost. In this project, the user will have to upload an image of blinds reading interest, which is to be converted in the braille format. Initially, we will extract the text from a text image and save the text file using different image processing techniques. Then each character stored in the text file will be converted to the respective braille format using ASCII values and then converted text will be embossed using the braille embosser, which will make the content available for the blind community.

scholarly journals Improving Ruby on Rails-Based Web Application Performance

Information ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 319
Author(s):  
Denys Klochkov ◽  
Jan Mulawka
Keyword(s):  
Response Time ◽  
User Experience ◽  
Web Application ◽  
Performance Metrics ◽  
Response Times ◽  
Web Development ◽  
Performance Measurements ◽  
Application Performance ◽  
Client Side ◽  
Ruby On Rails

The evolution of web development and web applications has resulted in creation of numerous tools and frameworks that facilitate the development process. Even though those frameworks make web development faster and more efficient, there are certain downsides to using them. A decrease in application performance when using an “off the shelf” framework might be a crucial disadvantage, especially given the vital role web application response time plays in user experience. This contribution focuses on a particular framework—Ruby on Rails. Once the most popular framework, it has now lost its leading position, partially due to slow performance metrics and response times, especially in larger applications. Improving and expanding upon the previous work in this field, an attempt to improve the response time of a specially developed benchmark application is made. This is achieved by performing optimizations that can be roughly divided into two groups. The first group concerns the frontend improvements, which include: adopting the client-side rendering, JavaScript Document Object Model (DOM) manipulation and asynchronous requests. Another group can be described as the backend improvements, which include implementing intelligent, granular caching, disabling redundant modules, as well as profiling and optimizing database requests and reducing database access inefficiencies. Those improvements resulted in overall up to 74% decreased page loading times, with perceived application performance being improved above this mark due to the adoption of a client-side rendering strategy. Using the different metrics of application performance measurements, each of the improvement steps is evaluated with regards to its effect on different aspects of overall performance. In conclusion, this work presents a way to significantly decrease the response time of a particular Ruby on Rails application and simultaneously provide a better user experience. Even though the majority of this process is specific to Rails, similar steps can be taken to improve applications implemented with the use of other similar frameworks. As the result of the work, a groundwork is laid for the development of the tool that could assist the developers in improving their applications as well.

Image Processing Methodology for Determining SI Precipitate Size and Density in Oxide Layers from Conical Dark Field TEM Micrographs

2001 ◽  
Vol 7 (S2) ◽  
pp. 832-833
Author(s):  
A. Domenicucci
Keyword(s):  
Image Processing ◽  
Low Cost ◽  
Dark Field ◽  
Precipitate Size ◽  
Second Phase ◽  
Oxide Breakdown ◽  
Image Processing Techniques ◽  
Transmission Electron ◽  
The Matrix ◽  
Processing Techniques

Image processing techniques have been used for decades in many branches of science. with the advent of low cost, highresolution CCD cameras and the advances in personal computing, techniques previously used in other disciplines are increasingly being applied by transmission electron microscopists. The present paper gives an example of using image processing techniques for characterizing the number and size of second phase precipitates in an oxide matrix.Si inclusions in the form of Si precipitates can occur in silicon dioxide films. The inclusions are contained within the films and effectively reduce the local thickness of the oxide. This thinning results in a reduction in the voltage necessary to cause oxide breakdown; the larger is the precipitate, the lower the breakdown voltage. Knowledge of the precipitate size and density is therefore important when assessing the dielectric integrity of these films. The Si precipitates are crystalline and more or less randomly oriented within the matrix.

Mechatronic System for ABO Human Blood Typing

2014 ◽  
Vol 8 (4) ◽  
Author(s):  
Vânia Moreira ◽  
José Machado ◽  
Vítor Carvalho ◽  
Filomena Soares ◽  
Ana Ferraz
Keyword(s):  
Image Processing ◽  
Response Time ◽  
Human Blood ◽  
Fast Response ◽  
Blood Type ◽  
Medical Emergency ◽  
Blood Typing ◽  
Image Processing Techniques ◽  
Emergency Situations ◽  
Processing Techniques

In medical emergency situations, when a patient needs a blood transfusion, the universal blood type O− is administered. This procedure may lead to the depletion of stock reserves of O− blood. Nowadays, there is no commercial equipment capable of determining the patient's blood type in situ, in a fast and reliable process. Human blood typing is usually performed through the manual test, which involves a macroscopic observation and interpretation of the results by an analyst. This test, despite of having a fast response time, may lead to human errors, which sometimes can be fatal to the patient. This paper presents the development of an automatic mechatronic prototype for determining human blood typing (ABO and Rh systems) through image processing techniques. The prototype design takes into account the characteristics of reliability of analysis, portability, and response time allowing the system to be used in emergency situations. The developed prototype performs blood and reagents mixture acquires the resultant image and processes the data (based on image processing techniques) to determine the sample blood type. It was tested in a laboratory, using cataloged samples of blood types, provided by the Portuguese Institute of Blood and Transplantation. Hereafter, it is expected to test and validate the prototype in clinical environments.

scholarly journals Low cost blood vein detection system based on near-infrared LEDs and image-processing techniques

2020 ◽  
Vol 26 (2) ◽  
pp. 61-67
Author(s):  
Mohammed J. Alwazzan
Keyword(s):  
Image Processing ◽  
Near Infrared ◽  
Detection System ◽  
Low Cost ◽  
Ccd Camera ◽  
Accurate Identification ◽  
Image Processing Techniques ◽  
A Charge ◽  
Processing Techniques ◽  
Palm Of The Hand

AbstractDrawing blood and injecting drugs are common medical procedures, for which accurate identification of veins is needed to avoid causing unnecessary pain. In this paper, we propose a low-cost system for the detection of veins. The system emits near-infrared radiation from four light-emitting diodes (LEDs), with a charge-coupled device (CCD) camera located in the middle of the LEDs. The camera captures an image of the palm of the hand. A series of digital image-processing techniques, ranging from image enhancement and increased contrast to isolation using a threshold limit based on statistical properties, are applied to effectively isolate the veins from the rest of the image.

scholarly journals Diabetic Retinopathy Detection using Image Processing (GUI)

2019 ◽  
Vol 8 (2S3) ◽  
pp. 538-542
Keyword(s):  
Image Processing ◽  
Diabetic Retinopathy ◽  
User Interface ◽  
Adverse Effects ◽  
Graphical User Interface ◽  
Retinal Image ◽  
Processing Time ◽  
Image Processing Techniques ◽  
Major Disease ◽  
Processing Techniques

Diabetic Retinopathy is a major disease that has affected over 290 million people globally and 69.2 million people in India, the rate of people getting affected will increase exponentially in the coming years. Diabetic Retinopathy is an ailment linked to the fundus of the eye and can have adverse effects on the patient, if at all left undiagnosed respectively. Our project aims to construct a graphical user interface that can integrate image processing techniques together in order to predict whether the input fundus/retinal image received from the patient is affected with Diabetic Retinopathy or not; if affected, the graphical user interface will display the severity along with the required action needed to be undertaken by the user / patient. This essentially reduces the processing time involved in the process of detecting the disease and also the ophthalmologists can also have our graphical user interface as a backup that can be used for validating or assist in detecting the disease

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