Linear Radiosity with Error Estimation

We present a simple and inexpensive method for computing the estimates of error in a hierarchical linear radiosity method. Similar to the approach used in 1 for constant radiosity method, we compute lower and upper linear bounds of the actual radiosity function over the surface elements. We carry out this by computing linear upper and lower bounds of the kernel of the radiosity equation. Also we compute these bounds in a form which makes trivial the e ort of projecting the integral equation involving such kernels. We provide the hierarchical algorithm for computing the radiosity bounds. We derive the expression for computing error-estimates from these bounds. Finally we propose a re nement indicator for carrying out the link re nement.

• Type: Conference
• Year: 1995
• Where: RT
• Authors: Sumanta N. Pattanaik, Kadi Bouatouch
• Keywords: Computer Graphics, Constant Radiosity Method, Hierarchical Linear Radiosity, Radiosity Method, RT 1995