효율적인 BCC 볼륨 데이터의 GPU 등가면 광선투사법
Efficient GPU Isosurface Ray-casting of BCC Datasets
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참고문헌
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초록
본 연구에서는, 결과물의 우수함을 유지하면서도 기존 연구결과의 성능을 4–7배 향상시킨 실시간 GPU 등가면 볼륨레이케스터를 제시한다. 이러한 성능향상은 효율적인 빈공간 생략법과 분석적 그레디언트 계산법을 도입함으로써 가능하다. 빈공간 생략법은 스플라인 조각들의 BB-형식으로부터 만들어진 최소/최대값 옥트리에 기반하고 있고, 분석적그레디언트 계산법은 보다 정확한 렌더링 결과를제공할 뿐 아니라 더욱 빠른계산이 가능하도록 한다
Abstract
This paper presents a real-time GPU (Graphics Processing Unit) isosurface ray-caster that improves the performance by 4–7folds from our previous method, while keeping the superior visual quality. Such an improvement is achieved by incorporating an efficient empty-space skipping scheme and an analytic normal computation. The empty-space skipping scheme is done by building an min/max octree computed from the BB(Bernstein-B´ezier)-form of spline pieces and the analytic normal formula provides not only a nice visual quality but also an improved evaluation performance.
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