Bit allocation in the transform coding of hologram patterns

Yoshihiro Ishida; Toshiaki Fujii; Tadahiko Kimoto; Masayuki Tanimoto

doi:10.1117/12.343771

25 March 1999 Bit allocation in the transform coding of hologram patterns

Yoshihiro Ishida, Toshiaki Fujii, Tadahiko Kimoto, Masayuki Tanimoto

Proceedings Volume 3637, Practical Holography XIII; (1999) https://doi.org/10.1117/12.343771
Event: Electronic Imaging '99, 1999, San Jose, CA, United States

Abstract

We examined the data compression by transform coding for hologram patterns generated on a computer, to realize effective compression of hologram patterns with extremely huge information. We can't apply conventional 2-D image compression techniques directly to hologram patterns since the statistical properties of hologram patterns are quite different from those of 2-D images. Furthermore, it is not a hologram pattern but an image reproduced from the hologram pattern to be essential in the holography. We have to compress hologram patterns by considering the reproduced image. We found that hologram patterns contain a large amount of unnecessary component to reproduce the image. This should be removed for effective coding. The unnecessary component can be distinguished clearly from the necessary component in the frequency domain. We successfully removed it by bandpass filtering hologram patterns. We apply Karhunen-Loeve Transform (KLT) to the hologram patterns after this preprocessing. In the case of high compression, it is better to allocate more bits to the lower order KLT coefficients than the bits determined by the conventional power-based allocation method. Then, effective coding of hologram patterns is realized and better images are reproduced.

Citation Download Citation

Yoshihiro Ishida, Toshiaki Fujii, Tadahiko Kimoto, and Masayuki Tanimoto "Bit allocation in the transform coding of hologram patterns", Proc. SPIE 3637, Practical Holography XIII, (25 March 1999); https://doi.org/10.1117/12.343771

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Holograms

Image compression

Data compression

Acquisition tracking and pointing

Holography

Signal to noise ratio

Tin

Show All Keywords

Keywords/Phrases

Search In:

Publication Years