LED虚拟拍摄系统中的照明控制和照明匹配方法研究  

Research on Lighting Control and Lighting Matching Methods in LED Virtual Produc-tion System

作　　者：方捷新[1] 李娜[1] Fang Jiexin;Li Na(China Research Institute of Film Science and Technology(Test Institute of Film Technology Quality))

机构地区：[1]中国电影科学技术研究所(中央宣传部电影技术质量检测所),北京100086

出　　处：《现代电影技术》2022年第12期18-27,共10页Advanced Motion Picture Technology

基　　金：中国电影科学技术研究所(中央宣传部电影技术质量检测所)基本科研业务费项目《基于LED背景墙的电影虚拟摄制实验系统中的照明匹配技术研究》(2021-DKS-13)。

摘　　要：电影虚拟拍摄的真实感来源于光影的真实。LED虚拟拍摄本质上是虚拟的和现实的光线与影像在摄影机前的实时组合,虚拟空间和现实空间虽然在物理上互相独立,但在光影上互相影响并融为一体。LED虚拟拍摄的布光工作需要快速高效,从而为LED虚拟拍摄提供良好的基础。本文阐述了LED虚拟拍摄系统中的特殊照明需求和照明控制方法,提出了实现照明匹配的基础硬件条件,并基于色差计算理论和相关工具,形成了一套照明匹配和验证方法,可为LED虚拟拍摄实践提供照明匹配技术支撑,助力提升光影真实效果。The reality of movie virtual production derives from the reality of light and shadow.In essence,LED virtual production is a real-time combination of virtual and real lights and images in-camera.Although virtual space and real space are physically independent,they affect each other and integrate in light and shadow.The lighting arrangement for LED virtual production needs to be fast and efficient,thus providing a good basis for LED virtual photography.The paper describes the special lighting requirements and lighting control methods in the LED virtual production system,puts forward the basic hardware conditions to achieve lighting matching,and suggests a set of lighting matching and verification methods based on the colour difference calculation theory and related tools.The method can be useful to lighting matching for the LED virtual production,and may be helpful to improve the real effect of light and shadow.

关 键 词：LED虚拟拍摄 照明控制 照明匹配 

分 类 号：J914[艺术—电影电视艺术]