Investigating Occlusion and Discretization Problems in Image-Based Blurring Techniques. - Brian A. Barsky; Michael J. Tobias; Daniel R. Horn; Derrick P. Chu (VVG, 2003)

Elimination of artifacts due to occlusion and discretization problems in image space blurring techniques. - Brian A. Barsky; Michael J. Tobias; Derrick P. Chu; Daniel R. Horn (Graph. Model., 2005)