Do-kyeong Lee¹, Tae-won Kim², Yoo-joo Choi², Min Hong^3,*

Intelligent Automation & Soft Computing, Vol.32, No.3, pp. 1541-1556, 2022, DOI:10.32604/iasc.2022.020674

Abstract In real-time contents, such as games and interactive simulators, it is very important to reduce the amount of simulation computation of 3D deformable objects. Although position-based dynamics has been proposed to reduce the amount of computation, the number of nodes for the tetrahedral model to represent a volumetric deformable object has to be increased, which makes the real-time simulation difficult. Therefore, this paper proposes an Internal shape preserving constraint(ISPC) generation algorithm integrated into the position-based dynamics to represent the physical properties of the 3D volumetric deformable object, while reducing the number of nodes filling the interior of the object. The… 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 >