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基于光线投射算法的混合场景可视化

DOI: 10.11834/jig.200507163

Keywords: 3维可视化,体绘制,光线投射,图形图像处理

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Abstract:

体绘制技术常用于3维体数据场的可视化,其虽然可以生成高质量的投影图像,但通常不能绘制由体数据与点、线、面图形组成的混合场景。在现有的混合场景可视化方法中,有些只能绘制由体数据与面图形组成的复杂混合场景,而不能处理存在点和线的混合场景;有的则成像速度慢、成像质量差。为了能够正确地绘制复杂混合场景,采用SIMD和软件加速等技术,提出了一种速度快、成像质量高的基于光线投射算法的混合场景可视化方法,并分析了该算法所具有的3种绘制次序,以便满足不同应用的要求。该算法既可用于不同场景的绘制,又可用于平行和透视投影中。实验结果表明,该算法能够正确地绘制体数据与点、线、面图形组成的混合场景,且成像速度快,图像质量高。

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