Color imaging for digital cameras with a single CCD sensor

Author

Zhang, X. ; Obuchi, Y. ; Kambe, T. ; Kubo, N. ; Suzuki, I.

Author_Institution

Integrated Circuits Group, Sharp Corp., Nara, Japan

Volume

3

fYear

2000

fDate

2000

Firstpage

2007

Abstract

Usually there is only a single CCD sensor in digital still camera. The CCD data array is interpolated into R, G, B planes to construct a complete color image. The interpolation attenuates the high frequency signal of the image, so a sharpening filter is used to compensate for the effect of blur. Pixel artifacts like zipper effect etc. are introduced by the sharpening operation. This paper presents an even-number-size-mask band pass filter, which can restore the color image´s high frequency signal with no zipper effect. An image processing technique based on the compensation filter is proposed and experiments show satisfactory results

Keywords

CCD image sensors; band-pass filters; cameras; compensation; image colour analysis; image restoration; interpolation; color imaging; compensation filter; digital cameras; even-number-size-mask band-pass filter; image processing technique; interpolation; sharpening filter; single CCD sensor; still camera; Band pass filters; Charge coupled devices; Charge-coupled image sensors; Color; Digital cameras; Frequency; Image processing; Image restoration; Interpolation; Signal restoration;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 2000. IECON 2000. 26th Annual Confjerence of the IEEE

Conference_Location

Nagoya

Print_ISBN

0-7803-6456-2

Type

conf

DOI

10.1109/IECON.2000.972584

Filename

972584