Title :
Rotation-invariant phase-shifting joint transform correlator
Author :
Wang, Z.Q. ; Guan, J.H. ; Liang, B.L. ; Liu, H.L. ; Mu, G.G.
Author_Institution :
Inst. of Modern Opt., Nankai Univ., Tianjin, China
Abstract :
The performance merits of the phase-shifting joint transform correlator (PSJTC) is evaluated. The PSJTC is combined with the circular harmonic expansion to achieve a dramatic rotation-invariant correlation with high light efficiency and high discrimination capability.
Keywords :
image processing; optical correlation; transforms; circular harmonic expansion; high discrimination; high light efficiency; joint transform power spectra; performance; phase-shifting joint transform correlator; reference image decomposition; rotation-invariant correlator; Amplitude modulation; Computer architecture; Correlators; Fourier transforms; Image recognition; Information science; Modems; Optical modulation; Phase modulation; Target recognition;
Conference_Titel :
Communications, 1999. APCC/OECC '99. Fifth Asia-Pacific Conference on ... and Fourth Optoelectronics and Communications Conference
Conference_Location :
Beijing, China
Print_ISBN :
7-5635-0402-8
DOI :
10.1109/APCC.1999.820424
