볼륨 렌더링에서 전역조명처리를 위한 빛-분포 템플릿
Light-distribution Template for global illumination in volume rendering
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초록
볼륨 더링은 물체의 내부까지 표 할 수 있어서 의료 상과 같은 분야에 많이 활용된다. 볼륨 데이터의 사실 인 표을 해서는 조명 효과가 필수이다. 역 조명은 빛의 직인 향과, 산란과 소멸의 향을 고려하여 결과 상의 픽셀값을 계산한다. 이러한 모든 연산을 수행하기 해서는 많은 자원과 연산이 필요하기 때문에 몇 가 지 근사 방법이 제안 되었다. 본 연구에서는 이러한 근사 과정에서 자원의 소모를 빛-분포 템릿을 통해 감소시키 고 원의 치에 종속이지 않은 역 조명을 제안하고자 한다. 볼륨 데이터 체에 한 자맵을 만들어 쓰는 신에 상의 물성으로부터 은 자원을 소모하는 빛-분포 템릿을 생성 용하여 음과 빛의 산란을 표한 볼륨 더링 방법을 제안 한다.
Abstract
Volume rendering is utilized in many fields such as medical imaging since it can represent the inside of the object. Illumination is essential for a realistic representation of the volume data. Global illumination techniques compute pixel values by considering the effects of direct lighting, scattering and termination light. Computing all of these optical phenomena requires a lot of resources and operation, so several approximation methods have been proposed. We propose a global illumination method that reduces resource consumption with light-distribution templates in approximation process. Also it is not dependent on the light source position. Since it exploits the low cost light-distribution templates by considering the material properties of target objects rather than photon map for entire volume data, our method can produce high-quality images representing light scattering and shade.
참고문헌 (15)
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