Computational Visual Media ( IF 6.9 ) Pub Date : 2021-02-27 , DOI: 10.1007/s41095-021-0205-0 T. Chlubna , T. Milet , P. Zemčík
Light field rendering is an image-based rendering method that does not use 3D models but only images of the scene as input to render new views. Light field approximation, represented as a set of images, suffers from so-called refocusing artifacts due to different depth values of the pixels in the scene. Without information about depths in the scene, proper focusing of the light field scene is limited to a single focusing distance. The correct focusing method is addressed in this work and a real-time solution is proposed for focusing of light field scenes, based on statistical analysis of the pixel values contributing to the final image. Unlike existing techniques, this method does not need precomputed or acquired depth information. Memory requirements and streaming bandwidth are reduced and real-time rendering is possible even for high resolution light field data, yielding visually satisfactory results. Experimental evaluation of the proposed method, implemented on a GPU, is presented in this paper.
中文翻译:
实时按像素聚焦的光场渲染方法
光场渲染是一种基于图像的渲染方法,它不使用3D模型,而仅使用场景的图像作为渲染新视图的输入。由于场景中像素的深度值不同,因此表示为一组图像的光场近似会遭受所谓的重新聚焦伪影。在没有有关场景深度的信息的情况下,光场场景的正确聚焦仅限于单个聚焦距离。在这项工作中解决了正确的聚焦方法,并基于对最终图像有贡献的像素值的统计分析,提出了一种用于光场场景聚焦的实时解决方案。与现有技术不同,此方法不需要预先计算或获取的深度信息。减少了内存需求和流传输带宽,即使对于高分辨率光场数据,也可以进行实时渲染,从而产生视觉上令人满意的结果。本文介绍了在GPU上实现的该方法的实验评估。