ScritterHDR: Multiplex-Hidden Imaging on High Dynamic Range Projection

彬彬

1 Motivation: Multiplex-Hidden Imagery

We propose a system that enables the display of multiplex-hidden

images for selected users with highly accessible polarizing filters.

This system requires no electronic devices for users. It is designed

with high dynamic range (HDR) projection technology and realizes

the display of multiplexed content with HDR. Recently, research

into HDR projection technology has made a lot of progress. Such

HDR technology can realize digital cinemas with high quality and

clear visibility of digital content even in daylight. Thus, we expect

the system to extend the expression of digital content and to be applicable

to future cinemas, digital signage and virtual environments.

2 Image Hiding Algorithm

We have developed an image hiding algorithm in [Koki. N. and N. ]

allowing the system to display a secret image for certain users while

displaying another image for others. While an image is visible with

the naked eye, a hidden image is only visible through polarizing

glasses. The image hiding technique with active shutter glasses

proposed by [McDowall et al. 2004] and [Mistry 2009] can realize

multiple channels at the same time for different users, but the

complexity of the electronic device degrades the quality of images

(e.g. brightness, color management). On the other hand, with our

technique, the available contents are easily switchable by putting

on and taking off simple polarizing filters (Fig.1-(a)).

彬彬

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