COLOR

Aliasing reduction method for color digital still cameras with a single-chip charge-coupled device

[+] Author Affiliations
Tetsuya Kuno, Hiroaki Sugiura, Masako Asamura, Yoshiko Hatano

Imaging Systems Laboratory, Mitsubishi Electric Corporation,, 1 Zusho, Baba, Nagaoka, Kyoto?617, Japan

Narihiro Matoba

Information Technology R&D Center, Mitsubishi Electric Corporation, 5-1-1 Ofuna, Kamakura, Kanagawa?247, Japan

J. Electron. Imaging. 8(4), 457-466 (Oct 01, 1999). doi:10.1117/1.482699
History: Received Feb. 23, 1998; Revised Feb. 1, 1999; Revised Apr. 30, 1999; Accepted June 1, 1999
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Abstract

This paper presents an aliasing reduction method for digital still cameras (DSCs) which takes advantage of the color-signal correlation. The authors have developed a method of reducing aliasing by increasing the resolution of the color signals in DSCs using a single-chip charge-coupled device with a primary-color filter array. The new method interpolates the signals by taking advantage of the fact that color-signal variations are similar to one another in a local region of an image. In addition, it selects the signal that shows the highest correlation, either in the horizontal or vertical direction, for the color-signal positions subject to interpolation, thus improving color resolution. The effectiveness of the new method has been established: tests show that it significantly reduces aliasing. © 1999 SPIE and IS&T.

© 1999 SPIE and IS&T

Citation

Tetsuya Kuno ; Hiroaki Sugiura ; Masako Asamura ; Yoshiko Hatano and Narihiro Matoba
"Aliasing reduction method for color digital still cameras with a single-chip charge-coupled device", J. Electron. Imaging. 8(4), 457-466 (Oct 01, 1999). ; http://dx.doi.org/10.1117/1.482699


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