Improved Legibility of Text for Multiprojector Tiled Displays

Displaying small text on large multiprojector tiled displays is challenging. Problems arise because text is badly affected by the image-warping techniques that these displays apply to rectify projector misalignment. As a consequence, there has been little progress with important largedisplay applications that require small text, such as collaborative tutoring or web-browsing. In this paper we present a new warping technique designed to preserve crisp text, based on recent work by Hereld and Stevens. Our technique produces good results, free of artifacts, when used in today's multiprojector displays. We evaluate the legibility of our technique against conventional interpolation-based warping and find that users prefer our technique. We describe an efficient and reusable implementation, and show how the increased legibility has allowed us to investigate two new applications.

• Type: Conference
• Year: 2007
• Where: CVPR
• Authors: Philip Tuddenham, Peter Robinson
• Keywords: Computer Vision, Conventional Interpolation-based Warping, Crisp Text, CVPR 2007, Multiprojector Tiled Displays, Projector Misalignment, Small Text