Elemental image array generation based on BVH structure combined with spatial partition and display optimization

IF 3.7 2区工程技术 Q1 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE

Displays Pub Date : 2024-06-27 DOI:10.1016/j.displa.2024.102784

Tianshu Li, Shigang Wang, Jian Wei, Yan Zhao, Chenxi song, Rui Zhang

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引用次数: 0

Abstract

Integral imaging display has been widely used because of its features such as full parallax viewing, high comfort without glasses, simple structure and easy implementation. This paper enhances the speed of EIA generation by optimizing the acceleration structure of the ray tracing algorithm. By considering the characteristics of segmental objects captured by the camera during integral image rendering, a novel accelerating structure is constructed by combining BVH with the camera space. The BVH traversal is expanded into a 4-tree based on depth priority order to reduce hierarchy and expedite hit point detection. Additionally, the parameters of the camera array are constrained according to the reconstructed three-dimensional (3D) image range, ensuring optimal object coverage on screen. Experimental results demonstrate that this algorithm reduces ray tracing time for hitting triangle grid of collision objects while automatically determining display range for stereo images and adjusting camera parameters accordingly, thereby maximizing utilization of integrated imaging display resources.

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基于 BVH 结构的元素图像阵列生成与空间分割和显示优化相结合

整体成像显示器具有全视差观看、无需佩戴眼镜、舒适度高、结构简单、易于实现等特点，因此得到了广泛应用。本文通过优化光线追踪算法的加速结构，提高了 EIA 生成的速度。通过考虑整体图像渲染过程中摄像机捕捉到的分段对象的特征，结合 BVH 和摄像机空间，构建了一种新的加速结构。BVH 遍历扩展为基于深度优先级的 4 树，以减少层级并加速命中点检测。此外，摄像机阵列的参数根据重建的三维（3D）图像范围进行约束，以确保在屏幕上实现最佳的物体覆盖。实验结果表明，该算法在自动确定立体图像显示范围并相应调整摄像机参数的同时，减少了碰撞物体三角形网格的光线跟踪时间，从而最大限度地利用了集成成像显示资源。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Displays 工程技术-工程：电子与电气

CiteScore

4.60

自引率

25.60%

发文量

138

审稿时长

92 days

期刊介绍： Displays is the international journal covering the research and development of display technology, its effective presentation and perception of information, and applications and systems including display-human interface. Technical papers on practical developments in Displays technology provide an effective channel to promote greater understanding and cross-fertilization across the diverse disciplines of the Displays community. Original research papers solving ergonomics issues at the display-human interface advance effective presentation of information. Tutorial papers covering fundamentals intended for display technologies and human factor engineers new to the field will also occasionally featured.