Presentation 2007-06-21
Signs of DCT Coefficients as Feature Index of Images and Its Evaluation
Izumi ITO, Hitoshi KIYA,
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Abstract(in English) The sign of DCT coefficients of a signal has both the magnitude and the phase of DFT coefficients of the signal. The value of translation can be estimated by using the phase and the value of rotation can be estimated by using the magnitude. Therefore, the sign of DCT coefficients expressed with 1bit is effective as a feature of signals. We evaluate the sign of DCT from the standpoint of computational complexity and storage capacity. We confirmed the correctness of our discussion by some simulations.
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Keyword(in English) DCT sign correlation / phase-only correlation / DCT / DFT
Paper # CAS2007-5,VLD2007-21,SIP2007-35
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Committee SIP
Conference Date 2007/6/14(1days)
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Registration To Signal Processing (SIP)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Signs of DCT Coefficients as Feature Index of Images and Its Evaluation
Sub Title (in English)
Keyword(1) DCT sign correlation
Keyword(2) phase-only correlation
Keyword(3) DCT
Keyword(4) DFT
1st Author's Name Izumi ITO
1st Author's Affiliation Graduate School of System design, Tokyo Metropolitan University()
2nd Author's Name Hitoshi KIYA
2nd Author's Affiliation Graduate School of System design, Tokyo Metropolitan University
Date 2007-06-21
Paper # CAS2007-5,VLD2007-21,SIP2007-35
Volume (vol) vol.107
Number (no) 104
Page pp.pp.-
#Pages 6
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