Because a three-dimensional (3-D) autostereoscopic image can be
seen from a desired viewpoint without the aid of special viewing
glasses, integral photography (IP) is an ideal way to create 3-D
autostereoscopic images. We have already proposed a real-time IP
method that offers 3-D autostereoscopic images of moving objects in
real time by use of a microlens array and a high-definition television
camera. But there are two problems yet to be resolved: One is
pseudoscopic images that show a reversed depth representation. The
other is interference between the element images that constitute a 3-D
autostereoscopic image. We describe a new gradient-index
lense-array method based on real-time IP to overcome these two
problems. Experimental results indicating the advantages of this
method are shown. These results suggest the possibility of using a
gradient-index lens array for real-time IP.
© 1998 Optical Society of America
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