Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4034621 | Vision Research | 2009 | 12 Pages |
Abstract
Amplitude spectra might provide information for natural scene classification. Amplitude does play a role in animal detection because accuracy suffers when amplitude is normalized. However, this effect could be due to an interaction between phase and amplitude, rather than to a loss of amplitude-only information. We used an amplitude-swapping paradigm to establish that animal detection is partly based on an interaction between phase and amplitude. A difference in false alarms for two subsets of our distractor stimuli suggests that the classification of scene environment (man-made versus natural) may also be based on an interaction between phase and amplitude. Examples of interaction between amplitude and phase are discussed.
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Sensory Systems
Authors
Carl M. Gaspar, Guillaume A. Rousselet,