用可调光无人机群实现空中线条光影,支持动画与矢量导入。
Line Drawings using LightBenders: Authoring and Illuminating

- 无人机带可调灯带,通过算法自动规划最优光照路径。
- 实测最大偏差10.1毫米,用户评分中位数达8分,视觉可接受。
- 支持Blender和SVG直接创作,一键生成空中光影动画。
本研究提出一套用于照亮线条画与字母造型的软硬件系统。该系统可在室内实现空中动态照明,硬件为配备伺服关节与高密度可寻址LED灯带的无人机(LightBender),可实现任意姿态调整。软件方面:第一,开发算法估算最少所需LightBender数量,优化集群排列以减少气流干扰,生成并执行集群飞行与照明文件;第二,提供Blender插件,支持用户注册、创作图形动画,并一键部署;第三,支持直接导入SVG文件,在Blender或独立工具LB-Author中实现矢量图空中照明。通过一项经IRB批准的人体实验(n=21)评估,系统最大偏差10.1毫米时,用户对光影质量的中位评分达8(0-10分制),感知上可接受。
原文摘要 · Abstract (English)
This study presents the hardware and software architecture of a transformative system for illuminating line drawings and letterforms. These mid-air illuminations are indoors and might be animated. The hardware contribution is a drone equipped with servo-actuated rod joints and a dense, addressable LED strip that enables arbitrary orientation, a LightBender. The software contributions are threefold. First, the system implements algorithms and heuristics to estimate the minimum number of LightBenders required to render a line drawing or letterform, stagger swarm formations to mitigate LightBender downwash, generate Swarm Flight and Lighting (SFL) files, and execute these files using a swarm of LightBenders to illuminate line drawings and letterforms. Second, a Blender add-on enables users to register LightBenders, author graphics and animations represented by swarms of LightBenders, and deploy the swarm for illumination through one-click functions. Third, users may import SVG files into either the Blender add-on or a standalone LB-Author tool to illuminate line drawings directly from vector graphics. We present results from an IRB-approved human subject study (n=21) to evaluate the impact of LightBender misalignment on the perceived illuminations. Obtained results demonstrate that the system's 10.1 mm maximum misalignment is perceptually acceptable across tested illuminations, with a median quality rating of 8 on a 0-10 scale.
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