scholarly journals Pre-define Rotation Amplitudes Object Rotation in Handheld Augmented Reality

2021 ◽  
Vol 11 (2) ◽  
pp. 103-109
Author(s):  
Goh Eg Su ◽  
Ajune Wanis Ismail
Keyword(s):  
Augmented Reality ◽  
Handheld Devices ◽  
Interaction Techniques ◽  
Interaction Technique ◽  
3D Object ◽  
Novel Device ◽  
Research Areas ◽  
Object Rotation ◽  
Rotation Technique

Interaction is one of the important topics to be discussed since it includes the interface where the end-user communicates with the augmented reality (AR) system. In handheld AR interface, the traditional interaction techniques are not suitable for some AR applications due to the different attributes of handheld devices that always refer to smartphones and tablets. Currently interaction techniques in handheld AR are known as touch-based technique, mid-air gesture-based technique and device-based technique that can led to a wide discussion in related research areas. However, this paper will focus to discover the device-based interaction technique because it has proven in the previous studies to be more suitable and robust in several aspects. A novel device-based 3D object rotation technique is proposed to solve the current problem in performing 3DOF rotation of 3D object. The goal is to produce a precise and faster 3D object rotation. Therefore, the determination of the rotation amplitudes per second is required before the fully implementation. This paper discusses the implementation in depth and provides a guideline for those who works in related to device-based interaction.

scholarly journals Designing Ray-Pointing using Real hand and Touch-based in Handheld Augmented Reality for Object Selection

2021 ◽  
Vol 11 (2) ◽  
pp. 95-102
Author(s):  
Nur Ameerah Abdul Halim ◽  
Ajune Wanis Ismail
Keyword(s):  
Augmented Reality ◽  
Real Time ◽  
Mixed Reality ◽  
Touch Screen ◽  
Conventional Technique ◽  
Handheld Devices ◽  
Information Representation ◽  
3D Object ◽  
Object Selection ◽  
Real Hand

Augmented Reality (AR) have been widely explored worldwide for their potential as a technology that enhances information representation. As technology progresses, smartphones (handheld devices) now have sophisticated processors and cameras for capturing static photographs and video, as well as a variety of sensors for tracking the user's position, orientation, and motion. Hence, this paper would discuss a finger-ray pointing technique in real-time for interaction in handheld AR and comparing the technique with the conventional technique in handheld, touch-screen interaction. The aim of this paper is to explore the ray pointing interaction in handheld AR for 3D object selection. Previous works in handheld AR and also covers Mixed Reality (MR) have been recapped.

Natural Locomotion Based on Foot-Mounted Inertial Sensors in a Wireless Virtual Reality System

2015 ◽  
Vol 24 (4) ◽  
pp. 298-321 ◽  
Author(s):  
Ernesto de la Rubia ◽  
Antonio Diaz-Estrella
Keyword(s):  
Virtual Reality ◽  
Gait Cycle ◽  
Inertial Sensors ◽  
Low Cost ◽  
Point Of View ◽  
Handheld Devices ◽  
Preliminary Evaluation ◽  
Virtual Reality System ◽  
Object Searching

Virtual reality has become a promising field in recent decades, and its potential now seems clearer than ever. With the development of handheld devices and wireless technologies, interest in virtual reality is also increasing. Therefore, there is an accompanying interest in inertial sensors, which can provide such advantages as small size and low cost. Such sensors can also operate wirelessly and be used in an increasing number of interactive applications. An example related to virtual reality is the ability to move naturally through virtual environments. This is the objective of the real-walking navigation technique, for which a number of advantages have previously been reported in terms of presence, object searching, and collision, among other concerns. In this article, we address the use of foot-mounted inertial sensors to achieve real-walking navigation in a wireless virtual reality system. First, an overall description of the problem is presented. Then, specific difficulties are identified, and a corresponding technique is proposed to overcome each: tracking of foot movements; determination of the user’s position; percentage estimation of the gait cycle, including oscillating movements of the head; stabilization of the velocity of the point of view; and synchronization of head and body yaw angles. Finally, a preliminary evaluation of the system is conducted in which data and comments from participants were collected.

Determination of Total Choline by Liquid Chromatography– Electrospray Ionization–Tandem Mass Spectrometry in Infant Formulas

2012 ◽  
Vol 95 (1) ◽  
pp. 157-162 ◽  
Author(s):  
Shishan Fu ◽  
Baohua Tao ◽  
Shiyun Lai ◽  
Jingshun Zhang ◽  
Ren Yiping
Keyword(s):  
Electrospray Ionization ◽  
Neural Development ◽  
Internal Standard ◽  
Water Soluble ◽  
Infant Formulas ◽  
Research Areas ◽  
Hydrolyzed Protein ◽  
Evaluation Matrix ◽  
Single Laboratory

Abstract Choline is a water-soluble nutrient important for infants' brain and neural development. In infant formulas, choline is one of the important fortified nutrients. A single-laboratory validation study conducted an LC-electrospray ionization-MS/MS to determine total choline in infant formulas. Sample preparation was adopted from AOAC Official MethodSM 999.14, and instrumental running conditions were optimized. The LOQ was 0.2 μg/100 g, which is significant for measuring total choline in infant formulas. Average recoveries for milk-, rice-, soybean-, and hydrolyzed protein-based samples ranged from 86.45 ± 6.04% to 108.98 ± 3.68%, with RSD less than 7%. The repeatability RSD (RSDr) range was 0.24–3.59% in within-day evaluation and 1.16–3.24% in day-to-day evaluation. Matrix effect was also investigated, and can be effectively eliminated by using an internal standard. Therefore, this method has high credibility, and could be used as a routine method of quality control, or for clinical studies and other research areas.

(Re)Engineering Cultural Heritage Contexts using Creative Human Computer Interaction Techniques and Mixed Reality Methodologies

2014 ◽  
pp. 441-451
Author(s):  
Carl Smith
Keyword(s):  
Augmented Reality ◽  
Human Computer Interaction ◽  
Cultural Heritage ◽  
Mixed Reality ◽  
Design Guidelines ◽  
Virtual Space ◽  
Interaction Patterns ◽  
Interaction Techniques ◽  
Current State ◽  
Computer Interaction

The contribution of this research is to argue that truly creative patterns for interaction within cultural heritage contexts must create situations and concepts that could not have been realised without the intervention of those interaction patterns. New forms of human-computer interaction and therefore new tools for navigation must be designed that unite the strengths, features, and possibilities of both the physical and the virtual space. The human-computer interaction techniques and mixed reality methodologies formulated during this research are intended to enhance spatial cognition while implicitly improving pattern recognition. This research reports on the current state of location-based technology including Mobile Augmented Reality (MAR) and GPS. The focus is on its application for use within cultural heritage as an educational and outreach tool. The key questions and areas to be investigated include: What are the requirements for effective digital intervention within the cultural heritage sector? What are the affordances of mixed and augmented reality? What mobile technology is currently being utilised to explore cultural heritage? What are the key projects? Finally, through a series of case studies designed and implemented by the author, some broad design guidelines are outlined. The chapter concludes with an overview of the main issues to consider when (re)engineering cultural heritage contexts.

Augmented Reality and Experiences

2019 ◽  
pp. 66-93 ◽  
Author(s):  
Prabha Selvaraj ◽  
Sumathi Doraikannan ◽  
Anantha Raman Rathinam ◽  
Balachandrudu K. E.
Keyword(s):  
Augmented Reality ◽  
Real World ◽  
New Technology ◽  
Handheld Devices ◽  
The Real ◽  
The World ◽  
Extensive Range ◽  
Different Types ◽  
Medicine Education

Today technology evolves in two different directions. The first one is to create a new technology for our requirement and solve the problem, and the second one is to do it with the existing technology. This chapter will discuss in detail augmented reality and its use in the real world and also its application domains like medicine, education, health, gaming, tourism, film and entertainment, architecture, and development. Many think that AR is only for smartphones, but there are different ways to enhance the insight of the world. Augmented realities can be presented on an extensive range of displays, monitors, screens, handheld devices, or glasses. This chapter will provide the information about the key components of AR devices. This chapter gives a view on different types of AR and also projects how the technology can be adapted for multiple purposes based on the required type of view.

Social and Physical Interactive Paradigms for Mixed Reality Entertainment

2011 ◽  
pp. 352-366
Author(s):  
Adrian David Cheok
Keyword(s):  
Augmented Reality ◽  
Case Studies ◽  
Mixed Reality ◽  
Gps Tracking ◽  
Tangible Interaction ◽  
Application Domain ◽  
Interaction Techniques ◽  
Technological Aspect ◽  
Design Decisions ◽  
System Description

In this chapter, we explore the applications of mixed reality technology for future social and physical entertainment systems. Throughout the case studies that will be presented here, we will show the very broad and significant impacts of mixed reality technology on variety aspects of human interactivity with regards to entertainment. On the technological aspect, the various systems we would be touching on incorporated different technologies ranging from the current mainstream ones such as GPS tracking, Bluetooth, RFID to pioneering researches of vision based tracking, augmented reality, tangible interaction techniques and 3D live mixed reality capture system. We will discuss each projects in detail in terms of their motivations and requirements of the particular application domain, their system description and design decisions, as well as their future impacts on the human social and physical entertainment field.

Determination of contact points between workpiece and fixture elements as a tool for augmented reality in fixture design

2019 ◽  
Author(s):  
Vitalii Ivanov ◽  
Ivan Pavlenko ◽  
Oleksandr Liaposhchenko ◽  
Oleksandr Gusak ◽  
Vita Pavlenko
Keyword(s):  
Augmented Reality ◽  
Fixture Design ◽  
Contact Points
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