An ocularist's approach to human iris synthesis

Abstract

Human irises gain their appearance from a layered and highly complex structure that is difficult to model and render with conventional techniques. We present an approach that uses domain knowledge from the field of ocular prosthetics. In that field, ocularists create an artificial iris by painting many simple semi-transparent layers. We translate this methodology into a simple and effective toolkit which can be used to create and render realistic looking irises.

Netra

“…Deering [2005] presented a photon-accurate model of the cones in the human retina and used it to simulate the perception of displayed digital images. Sagar et al [1994] [Lefohn et al 2003;Cui et al 2004;Wecker et al 2005;Makthal and Ross 2005;Ritschel et al 2009]. We hope to add to this growing body of research.…”

eyeSelfie

“…Computational models describing cone distribution [Deering 2005], anatomy [Sagar et al 1994], pupil light reflex [Pamplona et al 2009 Rendering the eye has been widely explored for a great variety of applications, such as modeling realistic video game characters and surrounding objects, refractive errors and cataracts [Cui et al 2004;Lefohn et al 2003;Makthal and Ross 2005;Ritschel et al 2009;Wecker et al 2005;Pamplona et al 2010;Pamplona et al 2011].…”

Exposing Digital Forgeries Through Specular Highlights on the Eye

“…The 3-D surface normal N at a specular highlight is estimated from a 3-D model of the human eye [6]. The model consists of a pair of spheres as illustrated in Fig.…”

“…The larger sphere, with radius r 1 = 11.5 mm, represents the sclera The distance between the center of the smaller sphere and the plane containing the limbus is q = 5.25 mm. These measurements vary slightly among adults, and the radii of the spheres are approximately 0.1 mm smaller for female eyes [3,6].…”