VSS Posters 2015 Egan, Kallie & Todd. (2015) The effects of smooth occlusions and directions of illumination on the perception of 3-D shape from shading. 2014 Todd & Egan. (2014). Is the Perception of 3D Shape from Shading Based on Assumed Reflectance and Illumination? Egan, Kallie & Todd. (2014). The perceptual matching of local surface orientation based on shape from shading. Kallie, Egan & Todd. (2014). Perception of Local Surface Patches Using Shape From Shading.