Abstract
In order to develop practical color cameras with useful resolution, a novel image processing and charge-coupled device (CCD) structure is proposed which results in shrinking chip size and easing photolithography. The resolution of CCD cameras is limited by the aliasing errors associated with spatially discrete sampling on a photosensing area. The photosensing array arranged in a two-dimensional face-centered rectangular lattice scheme, and the spatial offsetting technique among three CCD's avoid undesirable signal carriers accompanied by aliasing errors. A unique signal processing about vertical correlation of an image is put to use, in order to reduce spurious effects of aliasing. These image processing techniques are theoretically treated on a spectrum space. The photosensing array arranged in a face-centered rectangular lattice scheme is successfully implemented with a zigzag-transfer CCD with checker-pattern sensing sites, which relax some of the lithography requirements and improve image qualities. By means of the zigzag-transfer CCD structure and the image processing, the resolution of color camera has been expanded by a factor of 2.5, compared with that of the conventional CCD cameras employing the same number of pixels. According to the theory, the factor may be increased further up to three or four.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
