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Coding images in the frequency domain: Filter design and energy processing characteristics of the human visual system

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2 Author(s)
Caelli, T. ; Dept. of Psychology, Univ. of Alberta, Edmonton, Alta., Canada ; Hubner, M.

Questions concerning the number, tuning widths, and phase sensitivity of two-dimensional narrow-band energy processing units, particularly in central vision, are reviewed. Results with grating and two-dimensional images are discussed, particularly within the context of energy processing and information reduction strategies for the human observer. Finally, a consequent principle of invariance is defined and shown to hold with such filter units.

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Systems, Man and Cybernetics, IEEE Transactions on  (Volume:SMC-13 ,  Issue: 5 )