电磁环境多层等值面融合绘制研究

摘要

This paper proposes two visualization methods of multi-layer isosurface which extract from electromagnetism environment for the different requirements.Multi-layer Bogus Taxis, boosting up the borderline using Per-Pixel Shading, improves the performance of rendering but the quality is low.Improved Depth Peeling solves the problem of non-uniform depth distributing of multi-fragment through using Slicemap technology.The state-of-art of improved Depth Peeling gains great improvement for large scenes with high complexity.The algorithm gains a great balance between performance and quality,and is capable to capture up to multi-fragments in a single geometry pass with great speed improvement and faithful results.%针对电磁环境三维体数据中提取出的多层等值面,根据交互绘制速率与绘制质量的不同要求,提出分层伪排序融合绘制方法和改进Depth Peeling融合绘制方法.前者实现了多层等值面的近似排序,采用逐像素着色增强边界轮廓,绘制速率快,适合需要快速绘制而质量要求不高的场合;后者通过引入Slicemap技术,解决了多层等值面片元分布不均匀的问题,并利用多遍绘制融合方法,提高了绘制复杂等值面的能力,从可视化效果看,提高了绘制质量,绘制效率也得到了保证.