DocumentCode :
951595
Title :
VLSI implementation of low-power high-quality color interpolation processor for CCD camera
Author :
Hsia, Shih-Chang ; Chen, Ming-Huei ; Tsai, Po-Shien
Author_Institution :
Dept. of Comput. & Commun. Eng, Nat. Kaohsiung First Univ. ofScience & Technol., Taiwan
Volume :
14
Issue :
4
fYear :
2006
fDate :
4/1/2006 12:00:00 AM
Firstpage :
361
Lastpage :
369
Abstract :
This paper presents a color interpolation technique for a single-chip charge-coupled device with color-filter-array format. We propose edge-direction weighting and the local gain approach to reconstruct missing color components. Simulations show that the proposed method can achieve better quality-complexity tradeoff than other algorithms. For real-time implementation, a cost-effective architecture consisting of a pipeline schedule is designed based on our new algorithm. With the time-sharing method, the VLSI architecture can interpolate various colors using a common computational kernel, reducing the circuit complexity. The prototype of the color interpolation processor has been successfully verified with a field-programmable gate array device. The chip only uses about 10K gates and two line buffers.
Keywords :
CCD image sensors; VLSI; field programmable gate arrays; image colour analysis; interpolation; low-power electronics; microprocessor chips; pipeline processing; real-time systems; CCD camera; FPGA; VLSI; circuit complexity reduction; color filter array; edge-direction weighting; field-programmable gate array device; low-power high-quality color interpolation processor; pipeline schedule; real-time implementation; single-chip charge-coupled device; time-sharing; Charge coupled devices; Charge-coupled image sensors; Circuit simulation; Color; Computational modeling; Computer architecture; Interpolation; Pipelines; Time sharing computer systems; Very large scale integration; Camera; charge-coupled device (CCD); color filter array (CFA); field programmable gate array (FPGA); interpolation;
fLanguage :
English
Journal_Title :
Very Large Scale Integration (VLSI) Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
1063-8210
Type :
jour
DOI :
10.1109/TVLSI.2006.874367
Filename :
1637466
Link To Document :
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