MOM-PO混合方法中一种遮挡消影的新算法

doi:10.3969/j.issn.1001-2400.2012.01.008

Abstract

Abstract:

It is necessary to judge the lit region and the shadow region in the PO area when we use the MOM-PO hybrid method. This paper proposes a highly efficient method to complete this hidden face removal. First of all, it divides all the triangles in the geometric model into groups by the commonly-used Z-Buffer method, thus decreasing the time-expenditure. And then a strict method is adopted to find the lit triangles with high accuracy. Finally, we apply the domain decomposition method to decrease the memory requirement. A numerical experiment shows this new method can obtain a more accurate result than the Z-Buffer method by 18.6％ at the expense of only a little more time and memory.

Key words: moment methods, physical optics, hidden face removal, domain decomposition methods

CLC Number:

TN011

DANG Xiaojie;YUAN Haobo;WANG Nan;LIANG Changhong. New method for removing the hidden face in the MOM-PO hybrid method[J].J4, 2012, 39(1): 38-41.

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New method for removing the hidden face in the MOM-PO hybrid method

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