Responsive Portraits


Session Title:

  • Interactive and Intermedia Software System Design

Presentation Title:

  • Responsive Portraits



  • Modern techniques for high resolution still image display offer new expressive possibilities for photographic portraiture and exhibition. Responsive Portraits challenges the notion of static photographic portraiture as the unique, ideal visual representation of its subject. Editors are usually confronted with choosing ONE ideal portrait from a limited set of pictures which represent poses, gestures, and expressions that ALL contribute to define a character. In our view the entire set of a subject’s typical portraits should be kept for interactive exhibitions. A responsive portrait consists of a multiplicity of views whose dynamic presentation results from the interaction between the viewer and the image.The viewer’s proximity to the image, head movements, and facial expressions elicit dynamic responses from the portrait, driven by the portrait’s own set of autonomous behaviors. This type of interaction reproduces an encounter between two people: the viewer and the character portrayed. The individual’s experience of the portrait is unique, because it is based on the dynamics of the encounter rather than on the existence of a unique, ideal portrait of the subject.The sensing technology that we used is a computer vision system which tracks the viewer’s head movements and facial expressions as she interacts with the digital portrait; therefore, the whole notion of “who is watching who” is reversed: the object becomes the subject, the subject is observed. Face recognition techniques allow the portraited character to keep a record of previous encounters with a visitor and adjust their response based on the history of their interactions.