Amplitude-only log Radon transform for geometric invariant shape descriptor
Identifieur interne : 000023 ( PascalFrancis/Checkpoint ); précédent : 000022; suivant : 000024Amplitude-only log Radon transform for geometric invariant shape descriptor
Auteurs : Makoto Hasegawa [Japon] ; Salvatore Tabbone [France]Source :
- Pattern recognition [ 0031-3203 ] ; 2014.
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- Pascal (Inist)
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Abstract
A shape descriptor combining the Radon transform, the amplitude extraction, and the log-mapping is proposed in this paper. It is invariant to shape rotation, scaling, and translation. Invariance to translation is achieved by amplitude extraction on the radial coordinate. Rotation and scaling are log-mapped into two-dimensional translations and recovered with the phase-only correlation function. In addition, all transformation parameters (rotating angle, scaling factor, and position shift) can be determined also. The efficiency of the proposed descriptor compared to existing methods is shown experimentally on different kind of datasets.
Affiliations:
- France, Japon
- Grand Est, Lorraine (région), Région de Kantō
- Tokyo, Vandœuvre-lès-Nancy
- Université de Lorraine
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All rights reserved.</s1></fA44><fA45><s0>21 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>13-0366117</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Pattern recognition</s0></fA64><fA66 i1="01"><s0>GBR</s0></fA66><fC01 i1="01" l="ENG"><s0>A shape descriptor combining the Radon transform, the amplitude extraction, and the log-mapping is proposed in this paper. It is invariant to shape rotation, scaling, and translation. Invariance to translation is achieved by amplitude extraction on the radial coordinate. Rotation and scaling are log-mapped into two-dimensional translations and recovered with the phase-only correlation function. In addition, all transformation parameters (rotating angle, scaling factor, and position shift) can be determined also. 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