치과 원추형 CT 영상 데이터 분석에 효율적인 볼륨 렌더링 방법

• Published in: (사)디지털산업정보학회 논문지, 8(1) Vol. 8; no. 1; pp. 55 - 64
• Main Authors: 구윤모, Koo, Yun Mo
• Format: Journal Article
• Language: Korean
• Published: (사)디지털산업정보학회 01.03.2012
• Subjects: 컴퓨터학; Illustrative Visualization; Volume Rendering; Silhouette Enhancement
• ISSN: 1738-6667; 2713-9018

The advantage of direct volume rendering is to visualize structures of interest in the volumetric data. However it is still difficult to simultaneously show interior and exterior structures. Recently, cone beam computed tomography(CBCT) has been used for dental diagnosis. Despite of its usefulness, there is a limitation in the detection of interior structures such as pulp and inferior alveolar nerve canal. In this paper, we propose an efficient volume rendering model for visualizing important interior as well as exterior structures of dental CBCT. It is based on the concept of illustrative volume rendering and enhances boundary and silhouette of structures. Moreover, we present a new method that assigns a different color to structures in the rear so as to distinguish the front ones from the rear ones. This proposed rendering model has been implemented on graphics hardware, so that we can achieve interactive performance. In addition, we can render teeth, pulp and canal without cumbersome segmentation step.