KEYWORDS: 3D modeling, Edge detection, Magnetic resonance imaging, Volume rendering, Medical imaging, Computed tomography, Single photon emission computed tomography, Applied sciences, 3D image processing, Algorithm development
This paper aims to implement the trilinear interpolation algorithm with the marching cubes method for generating the smooth voxel surface from 2D digital images. The trilinear interpolation is a straight extension of the bilinear interpolation technique. It can be seen as the linear interpolation of two bilinear interpolations. The novel method is a fast and easy to implement and it also produces a smooth results (compared to the marching cubes technique). Therefore, for volume rendering such as the 3D medical models and terrains where a very large numbers of lookups in 3D grids are performed, this method is a very good choice for generating the high resolution of 3D surfaces.
In this paper, the knowledge construction technique called the repertory grid mind tool and the role-playing game (RPG) are used together in a game-based learning activity. The game has been designed and developed for the students in the Faculty of Science and Technology to practice the observation of the important features of birds in the Frugivores and Insectivores. The important features such as foot, leg, beak, crown, and tail are commonly used in the bird observation practice. By giving the hints in the RPG and the embedded repertory grid, students can share their knowledges and construct what they have learned during the game playing process. To evaluate the effectiveness of the game, the study has been tested in two separating group: one is the controlled group in which the students study and practice in the conventional learning environment without playing the game, whereas the other group has been taught in the collaborative learning environment by using this game. The results show that the repertory grid embedded in the RPG game can promote the students’ learning performance.
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