VLSI Implementation of low-power high-quality color interpolation processor for CCD camera

  • Authors:
  • Shih-Chang Hsia;Ming-Huei Chen;Po-Shien Tsai

  • Affiliations:
  • Department of Computer and Communication Engineering, National Kaohsiung First University of Science and Technology, Kaohsiung, Taiwan, R.O.C.;Department of Computer and Communication Engineering, National Kaohsiung First University of Science and Technology, Kaohsiung, Taiwan, R.O.C.;Department of Computer and Communication Engineering, National Kaohsiung First University of Science and Technology, Kaohsiung, Taiwan, R.O.C.

  • Venue:
  • IEEE Transactions on Very Large Scale Integration (VLSI) Systems
  • Year:
  • 2006

Quantified Score

Hi-index 0.00

Visualization

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.