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    • 9. 发明公开
    • 관여 매질에 의해 수광된 광의 양을 추정하기 위한 방법 및 대응하는 장치
    • 估计由参与媒体接收的光的数量的方法和相应的装置
    • KR1020140000170A
    • 2014-01-02
    • KR1020130071862
    • 2013-06-21
    • 톰슨 라이센싱
    • 고트롱,빠스깔들라렁드르,씨릴마르비,쟝-으드
    • G06T15/00
    • G06F17/5009G06T15/506
    • The invention relates to a method for estimating the quantity of light received by a point M (34) of a heterogeneous participating medium (10), the light being emitted by a light environment. In order to optimize the required calculation time, the method comprises the steps of: for each point (401-40n) of a first set of points, estimating first values representative of the light attenuation between the considered point and a first surface (40) bounding the medium (10) along a plurality of particular directions (421-427) of light emission, and estimating first coefficients of projection by projection of the first values of reduction of light intensity in an orthonormal basis of spherical functions; estimating second values representative of the light attenuation between the point (34) and a second surface (41) along directions (421-427), the second surface comprising some of the neighbor points (402, 403, 414, 415) of the point (34); and estimating the quantity of light received by the point using first coefficients of projection and second values of reduction of light intensity.
    • 本发明涉及一种用于估计由异质参与介质(10)的点M(34)接收的光量的方法,所述光由光环境发射。 为了优化所需的计算时间,该方法包括以下步骤:对于第一组点的每个点(401-40n),估计表示考虑点与第一表面(40)之间的光衰减的第一值, 沿着发光的多个特定方向(421-427)限制介质(10),并且通过在球面函数的正交基础中投射第一光强降低值来估计第一投影系数; 沿着方向(421-427)估计表示点(34)和第二表面(41)之间的光衰减的第二值,第二表面包括点的一些相邻点(402,403,414,415) (34); 以及使用第一投影系数和光强度的降低的第二值来估计该点接收的光量。