On eigenstructure-based direct multichannel blind image restoration

  • Authors:

  • Hung-Ta Pai;A. C. Bovik

  • Affiliations:

  • Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX;-

  • Venue:
  • IEEE Transactions on Image Processing
  • Year:
  • 2001

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Abstract

Existing eigenstructure-based direct multichannel blind image restoration techniques include nullspace-based and direct deconvolver estimation techniques. The nullspace-based approach can be formulated as an optimization problem. We show that this formulation implies a new subspace-based approach that uses matrix operations. This new approach has the same advantages as the nullspace-based one but requires less computational complexity. Under some mild conditions, its complexity is equal to that of the FFT. Furthermore, the relation among the nullspace-based approach, the direct deconvolver estimation and the new subspace-based approach is studied