Denis L. Viljoen

Andrea Hay1
Philip A May1
Elana Burger1
1Andrea Hay
1Philip A May
1Elana Burger
Learn More
Stereo-photogrammetry provides a low cost, easy to use, and noninvasive alternative to traditional facial anthropometry for the diagnosis of fetal alcohol syndrome (FAS). We describe such a system for use in obtaining 3-D facial information in infants. The infant is photographed using three high resolution digital cameras simultaneously while seated in a(More)
Photogrammetry has been used as an alternative to direct measurements to obtain facial distances for a variety of anthropometric applications. Taking measurements from photographs is less intrusive to subjects and reduces screening time, but measurements from single frontal photographs neglect depth information and may be inadequate for screening purposes.(More)
OBJECTIVE This study investigated whether there were differential effects of substantial prenatal alcohol exposure on letter and category fluency in children. Given that children with prenatal alcohol exposure are often impaired in executive functioning and that letter fluency taxes executive processes more than category fluency, it was expected that(More)
Conventional screening for Fetal Alcohol Syndrome in children involves time-consuming and intrusive facial distance measurements. We are developing an alternative method that will allow automatic measurement of the relevant distances from a pair of stereo photographs. This paper describes a method for automatic extraction from such photographs of the points(More)
  • 1