An accuracy enhancement algorithm for hierarchical radiosity

Chin Chen Chang, Zen-Chung Shih*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


In this research, we propose an algorithm to enhance the accuracy of the hierarchical radiosity. The proposed approach particularly creates links on the hierarchy in a bottom-up fashion according to both a user-specified error tolerance and the minimum patch area. It differs from the original hierarchical method that creates the links in a top-down manner. In our approach, the upper-level patches have more accurate estimates of the kernel. More accurate error bounds can be obtained for the upper-level patches. These error bounds make the creation of links on the hierarchy more accurate. Furthermore, more accurate form factors can also be obtained for the upper-level patches. Thus, we enhance the accuracy of hierarchical radiosity.

Original languageEnglish
Pages (from-to)225-232
Number of pages8
JournalComputers and Graphics (Pergamon)
Issue number2-3
StatePublished - 6 Mar 1998


  • Error bound
  • Form factor
  • Global illumination
  • Hierarchical radiosity
  • Radiosity

Cite this