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New Analysis Yields Improvements in Classic 3D Imaging Technique
Date:5/9/2013

Perth, Australia (PRWEB) May 09, 2013

Research conducted at Curtin University in Perth has enabled significant increases in image quality in a widely used 3D printing technique that is more than 100 years old.

Anaglyph printing — think of the red-and-blue 3D glasses used to transform 2D images to3D images in comics, magazines, books, and newspapers — came into being when the continuous-tone printed anaglyph was invented by French physicist Louis Ducos du Hauron in 1891.

The technique works by combining the left and right images of a stereoscopic image pair into the red and blue color channels of the output anaglyph image. With the red/blue 3D glasses, the left eye sees only the red channel of the anaglyph image, and the right sees only the blue. If the anaglyph 3D image has been constructed correctly, the viewer sees a pleasing 3D image on the printed page.

The project team, led by Curtin research engineer Andrew Woods, targeted crosstalk problems which are visible as ghost-like shadows. Their paper published recently in the SPIE journal Optical Engineering details seven recommendations for overcoming crosstalk.

“The largest reduction in crosstalk is likely to be achieved by using inks which have a better spectral purity than current process inks used in color printers,” Woods said. “We found that an 80% reduction in crosstalk was potentially achievable just by changing the cyan ink.”

The anaglyph technique is easy to implement and the anaglyph 3D glasses are relatively cheap, so the technique is used very widely, Woods said.

However, printed anaglyph images often suffer from
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