An Efficient Rendering Method for Anisotropic Volume Data in 3D Medical Imaging

3차원 의학영상 처리에서 사용되는 비균등 볼륨 데이터를 위한 효율적인 렌더링 방법

  • Published : 2002.12.01

Abstract

In medical visualization fields, anisotropic volume data are more common than isotropic ones. In this paper, we propose an efficient rendering method for anisotropic volume data, which directly computes the intensity of intermediate samples by interpolating the intensity of two corresponding voxels on consecutive slices. Unlike conventional rendering method, it does not require a preprocessing step for generating intermediate slices or additional memory for storing them. In order to evaluate the validity and performance of our method, we applied the method to shear-warp rendering algorithm. Experimental results show that this method improves rendering speed without significantly sacrificing the image quality.

3차원 의학영상처리 분야에서는 단면 해상도가 종축 방향의 공간 해상도보다 높은 비균등한 볼륨 데이터가 많이 사용된다 본 논문은 비균등한 볼륨 데이터를 효율적으로 렌더링하기 위하여 인접한 두 슬라이스상에 있는 복셀에서의 광도를 보간하여 중간 복셀의 광도를 직접 계산하는 방법을 제안한다. 기존 렌더링 방법과 달리 이 방법은 중간 슬라이스를 만들기 위해 전처리과정을 거치지 않으며 생성된 중간 슬라이스를 저장하기 위한 기억공간도 필요 없다 이 방법을 고속 볼륨 렌더링 알고리즘인 쉬어왑 분해 알고리즘에 적용한 사례를 통해 제안된 방법이 기존 방법보다 화질상의 손상 없이 속도가 향상됨을 보인다.

Keywords

References

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