Date of Award


Document Type

Thesis (Master's)

Department or Program

Department of Computer Science

First Advisor

Lorie Loeb


AfterImage is an interactive wall consisted of light detecting units controlled by microprocessors. Each light-sensing unit determines user proximity through the intensity of the shadow being cast, turning these shadows into bright snapshots portrayed through built-in LED lights. AfterImage extends the concept of memory to a space and location by imitating two unique characteristics of human memory: a lingering afterimage effect for intense stimuli, and a flashback of events that happened in the past. To create a more organic representation of flashbacks, a native data structure was explored. Through the collection and reproduction of geospatial memory, AfterImage attempts to change a user's perception of existence and connection between users across time. This paper discusses the development and production of AfterImage as a piece of public art.


Originally posted in the Dartmouth College Computer Science Technical Report Series, number TR2018-847.