Abstract
When searching a large database of images for ones that are visually similar to a particular reference images, it is desirable to have efficient means for making coarse comparisons between images. This paper describes an approach for efficient image retrieval using a recently discovered energy-spreading Hadamard transform arising from an orthogonal basis of unimodular sequences called the Prometheus Orthonormal Set (PONS). The energy-spreading properties of this PONS transform suggest that global comparison of key features of images can be accomplished using any subset of the PONS transform coefficients.
Original language | English (US) |
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Pages (from-to) | 1861-1864 |
Number of pages | 4 |
Journal | Conference Record of the Asilomar Conference on Signals, Systems and Computers |
Volume | 2 |
State | Published - 2000 |
Externally published | Yes |
Event | 34th Asilomar Conference - Pacific Grove, CA, United States Duration: Oct 29 2000 → Nov 1 2000 |
ASJC Scopus subject areas
- Signal Processing
- Computer Networks and Communications