Design and simulation of opera lighting and projection effects

Abstract

A major problem challenging opera designers is the inability to coordinate lighting, projection systems, and set designs in the preliminary planning phase. New computer graphics techniques, which provide the set and lighting designer [be opportunity to evaluate, test, and control opera designs prior to the construction of full scale systems are presented, These techniques-light source input. simulation of directional lighting, modeling of scenic projection systems, and full three-dimensional simulation-show the potential for the use of computer graphics in theater design,The light source input component consists of a program for assigning light source attributes with a set of theater lighting icons. This module allows a designer to specify light source characteristics in a way familiar to the discipline and to make preliminary evaluations of the lighting conditions. An extended progressive radiosity method is introduced to simulate the directional lighting characteristics which are specified by the input program.A new projection approach is presented to simulate the optical effects of scenic projectors. In addition, a solution to the distortion problem produced by angular projections is described.The above components are integrated to produce full threedimensional simulations of the global illumination effects in an opera scene.

Shader Lamps: Animating Real Objects With Image-Based Illumination

“…It is worthy to note that this problem is very similar to that faced by Julie Dorsey et al [Dorsey91] in trying to model the appearance of theatrical backdrops so that they appear correct from the audience's perspective. We use techniques that build on this (similar to [Raskar98]) to render onto the potentially very nonplanar surfaces of physical objects, and new techniques to address the occlusion, sampling, and blending issues.…”

A Distributed Memory Hierarchy and Data Management for Interactive Scene Navigation and Modification on Tiled Display Walls

“…Some systems have merged synthetic images with real scenarios for a static user or view point. The work by Dorsey et al provides a useful framework in the realm of theater set design [15]. In this work, a pre-distorted image from multiple devices appears correct when projected onto a static curved backdrop of the theater.…”

Real-Time Global Illumination Rendering with Dynamic Materials

“…Dorsey [9,10] 利用光照和绘制效果的线性关系实现了图像空间的重光照.此外,Dobashi [11] 也做了类似的工作, 他们把可选择的光照投影到基上进行预计算,并且利用增量计算来加速绘制过程.Saito [12] 利用几何帧缓存存储 每个像素对应的几何信息.之后,几何帧缓存被扩展为深度帧缓存 [13,14] ,用于存储每个像素对应的几何和光传播 的信息,并采用GPU加速.Hasan [15] 将这类重光照的方法提高到实时的绘制速度.…”