![Early complex radiosity image of steel factory](/sites/default/files/2017-06/factory%20%281%29.jpg)
![Early complex radiosity image of steel factory](/sites/default/files/2017-06/factory%20%281%29.jpg)
1987 - Stuart Feldman and John Wallace used a modified version of the hemicube radiosity algorithm to produce this image in 195 hours on a DEC Vax 8700. The environment consisted of about 55,000 elements, demonstrating that the radiosity approach could be extended to complicated scenes.