Inverse lighting design for interior buildings integrating natural and artificial sources JavaScript is disabled on your browser. Please enable JavaScript to use all the features on this page. Abstract In this paper we propose a new method for solving inverse lighting design problems that can include diverse sources such as diffuse roof skylights or artificial light sources. Results and analysis show that our method provides both fast and accurate results, making it suitable for lighting design in indoor environments while supporting interactive visualization of global illumination. Highlights ► We provide a fast method for inverse lighting that allows to shortening design times. ► The system is intended for flexible lighting design using a global illumination approach. ► Light sources can be specified at any place in the environment. ► We developed a method that integrates artificial light sources with skylight sources. Keywords Lighting design Inverse problem Global illumination
Spherical Harmonics for Beginners | dickyjim Spherical Harmonics seem really hard. Most articles are equation heavy, and if you’ve not understood the equations before, seeing them again doesn’t help. Despite reading a lot about them, the first time things fell into place was when I finally found some example code I could throw some numbers at and then visualize the results. In this post I aim to cover the fundamentals of using Spherical Harmonics without the use of equations and maybe just a little code. What are they really? The simplest way to think of Spherical Harmonics (SH from here on in) is in terms of what you would use them for. You have choice at the level of detail at which you store the values since SH is an infinite series, so you cut it off at bands. And then, once you have your SH coefficients, you can add, scale and rotate them. For an example of what you can do with SH, I’ve created a ShaderToy example which demonstrates some of the results you can get with SH. Top left : Order 2 Directional light SH. Cubemaps eh?
Advances in Visual Computing The two volume set LNCS 5875 and LNCS 5876 constitutes the refereed proceedings of the 5th International Symposium on Visual Computing, ISVC 2009, held in Las Vegas, NV, USA, in November/December 2009. The 97 revised full papers and 63 poster papers presented together with 40 full and 15 poster papers of 7 special tracks were carefully reviewed and selected from more than 320 submissions. The papers are organized in topical sections on computer graphics; visualization; feature extraction and matching; medical imaging; motion; virtual reality; face processing; reconstruction; detection and tracking; applications; and video analysis and event recognition. Active contour Animation HCI Optical flow ava computed tomography (CT) computer vision image processing image segmentation motion capture object recognition photorealistic scene understanding vertex shader visual analysis