Jun Ma¹, Hyo-Jung Kim², Ji-Soo Kim^3,4, Eek-Sung Lee⁵, Min Hong^6,*

CMC-Computers, Materials & Continua, Vol.68, No.3, pp. 4205-4213, 2021, DOI:10.32604/cmc.2021.018080

Abstract This research implements a random dot kinematogram (RDK) using virtual reality (VR) and analyzes the results based on normal subjects. Visual motion perception is one of visual functions localized to a specific cortical area, the human motion perception area (human analogue for the middle temporal/middle superior temporal area) located in the parieto–occipito–temporal junction of the human brain. The RDK measures visual motion perception capabilities. The stimuli in conventional RDK methods are presented using a monitor screen, so these devices require a spacious dark room for installation and use. Recently, VR technology has been implemented in different medical domains. The test… More >

Sungjin Lee¹, Min Hong², Hongly Va¹, Ji-Yun Park^3,*

CMC-Computers, Materials & Continua, Vol.67, No.3, pp. 3669-3679, 2021, DOI:10.32604/cmc.2021.015706

Abstract Subjective visual vertical (SVV) and subjective visual horizontal (SVH) tests can be used to evaluate the perception of verticality and horizontality, respectively, and can aid the diagnosis of otolith dysfunction in clinical practice. In this study, SVV and SVH screen version tests are implemented using virtual reality (VR) equipment; the proposed test method promotes a more immersive feeling for the subject while using a simple equipment configuration and possessing excellent mobility. To verify the performance of the proposed VR-based SVV and SVH tests, a reliable comparison was made between the traditional screen-based SVV and SVH tests and the proposed method,… More >

Shaymaa E. Sorour^1,*, Tamer M. Kamel², Hanan E. Abdelkader³

CMC-Computers, Materials & Continua, Vol.66, No.3, pp. 2671-2689, 2021, DOI:10.32604/cmc.2021.014395

Abstract The COVID-19 pandemic has affected the educational systems worldwide, leading to the near-total closures of schools, universities, and colleges. Universities need to adapt to changes to face this crisis without negatively affecting students’ performance. Accordingly, the purpose of this study is to identify and help solve to critical challenges and factors that influence the e-learning system for Computer Maintenance courses during the COVID-19 pandemic. The paper examines the effect of a hybrid modeling approach that uses Cloud Computing Services (CCS) and Virtual Reality (VR) in a Virtual Cloud Learning Environment (VCLE) system. The VCLE system provides students with various utilities… More >

Tuan Thanh Le¹, Jong-Beom Jeong², SangSoon Lee¹, Jaehyoun Kim², Eun-Seok Ryu^2,*

CMC-Computers, Materials & Continua, Vol.66, No.3, pp. 2627-2643, 2021, DOI:10.32604/cmc.2021.013399

Abstract Recent advances in 360 video streaming technologies have enhanced the immersive experience of video streaming services. Particularly, there is immense potential for the application of 360 video encoding formats to achieve highly immersive virtual reality (VR) systems. However, 360 video streaming requires considerable bandwidth, and its performance depends on several factors. Consequently, the optimization of 360 video bitstreams according to viewport texture is crucial. Therefore, we propose an adaptive solution for VR systems using viewport-dependent tiled 360 video streaming. To increase the degrees of freedom of users, the moving picture experts group (MPEG) recently defined three degrees plus of freedom… More >

Rui Zhang¹, Xiaoxiong Zhao^2,*

Intelligent Automation & Soft Computing, Vol.26, No.4, pp. 783-793, 2020, DOI:10.32604/iasc.2020.010113

Abstract At the end of the 20th century, the emergence and development of virtual reality display methods based on virtual reality technology is one of the most remarkable achievements in the field of digital design. In the late 20th century, rapidly developing virtual reality technology was gradually combined with computer multimedia display technology, and emerging digital information display means thus quickly became widely used in the design field. In today's information multimedia display field, multimedia display design using virtual reality technology has become one of the most important means of information display. In fact, in many fields, virtual reality display has… More >

Ayesha Hoor Chaudhry^*, Faisal Bukhari, Waheed Iqbal, Zubair Nawaz, Muhammad Kamran Malik

Intelligent Automation & Soft Computing, Vol.26, No.1, pp. 53-59, 2020, DOI:10.31209/2019.100000149

Abstract Laparoscopic surgery is a relatively new field in developing countries. There is a scarcity of laparoscopically trained doctors due to a lack of training and resources available in hospitals. Training and evaluation of medical professionals to develop laparoscopic surgical skills are important and essential as it improves the success rate and reduces the risk during real surgery. The purpose of this research is to develop a series of training exercises based on virtual reality using HTC Vive headset to emulate real-world training of doctors. This virtual training not only gives the trainee doctors mastery in their profession but also decreases… More >

Byong Kwon Lee¹, Yang Sun Lee^2,*

Intelligent Automation & Soft Computing, Vol.26, No.1, pp. 133-139, 2020, DOI:10.31209/2019.100000134

Abstract Biometric user authentication using the face has been applied mainly to access control systems. However, access is allowed even when a photo is presented instead of an actual face. This can facilitate illegal access including attending as a substitute or substitute authentication. An alternative approach has been implemented to solve this problem. The approach determines between a real face and a photo of a face using a UV sensor but this requires substantial cost and installation process because additional hardware (the UV sensor) is necessary. This paper proposes a three-step approach to identify between a real image and a photo.… More >

Soo-Kyun Kim¹, Chang-Hee Lee², Sun-Jeong Kim², Chang-Geun Song², Jung Lee^2,*

Intelligent Automation & Soft Computing, Vol.26, No.1, pp. 99-105, 2020, DOI:10.31209/2019.100000131

Abstract Recently, the development of HMDs such as Oculus Rift, HTC Vive, and PSVR has led to an increase in the interest of people in virtual reality (VR), and many related studies have been published. This leads to an additional cost increase in configuring the VR system. Also, space problems are caused. When the treadmill is installed, additional space is required, which may adversely affect the popularization of VR. In this paper, we propose a local area VR environment that solves cost and space problems using human tracking using several Kinect and solves the hygiene problems using smartphone-based mobile HMD. More >

Kalaphath Kounlaxay¹, Soo Kyun Kim^{2, *}

CMC-Computers, Materials & Continua, Vol.64, No.1, pp. 161-180, 2020, DOI:10.32604/cmc.2020.09930

Abstract To improve and develop education systems, the communication between instructors and learners in a class during the learning process is of utmost importance. Currently the presentations of 3D models using mixed reality (MR) technology can be used to avoid misinterpretations of oral and 2D model presentations. As an independent concept and MR applications, MR combines the excellent of each virtual reality (VR) and augmented reality (AR). This work aims to present the descriptions of MR systems, which include its devices, applications, and literature reviews and proposes computer vision tracking using the AR Toolkit Tracking Library. The focus of this work… More >

Chin Siang Ong¹, Aravind Krishnan¹, Chen Yu Huang¹, Philip Spevak², Luca Vricella¹, Narutoshi Hibino¹, Juan R. Garcia², Lasya Gaur³

Congenital Heart Disease, Vol.13, No.3, pp. 357-361, 2018, DOI:10.1111/chd.12587

Abstract Objective: New platforms for patient imaging present opportunities for improved surgical planning in complex congenital heart disease (CHD). Virtual reality (VR) allows for interactive manipulation of high-resolution representations of patient-specific imaging data, as a supplement to traditional 2D visualizations and 3D printed heart models.
Design: We present the novel use of VR for the presurgical planning of cardiac surgery in two infants with complex CHD to demonstrate interactive real-time views of complex intra and extracardiac anatomy.
Results: The use of VR for cardiac presurgical planning is feasible using existing imaging data. The software was evaluated by both pediatric cardiac surgeons… More >