An efficient frequency-domain algorithm for discrete orthogonal basis restoration

1998 ◽  
Vol 45 (4) ◽  
pp. 522-525
Author(s):  
E.B. Moody
Keyword(s):  
Frequency Domain ◽  
Orthogonal Basis ◽  
Discrete Orthogonal

Identification in Generalized Orthogonal Basis - A Frequency Domain Approach

1996 ◽  
Vol 29 (1) ◽  
pp. 4315-4320 ◽  
Author(s):  
F. Schipp ◽  
L. Gianone ◽  
J. Bokor ◽  
Z. Szabó
Keyword(s):  
Frequency Domain ◽  
Orthogonal Basis ◽  
Generalized Orthogonal ◽  
Frequency Domain Approach

ROBUST DIGITAL WATERMARKING BASED ON PRINCIPAL COMPONENT ANALYSIS

2004 ◽  
Vol 04 (02) ◽  
pp. 183-192 ◽  
Author(s):  
THAI DUY HIEN ◽  
YEN-WEI CHEN ◽  
ZENSHO NAKAO
Keyword(s):  
Principal Component Analysis ◽  
Frequency Domain ◽  
Digital Watermarking ◽  
Principal Component ◽  
Component Analysis ◽  
Orthogonal Basis ◽  
Basis Functions ◽  
Experimental Results ◽  
Robust Performance

We propose a robust digital watermarking technique based on Principal Component Analysis (PCA) and evaluate the effectiveness of the method against some watermark attacks. In this proposed method, watermarks are embedded in the PCA domain and the method is closely related to DCT or DWT based frequency-domain watermarking. The orthogonal basis functions, however, are determined by data and they are adaptive to the data. The presented technique has been successfully evaluated and compared with DCT and DWT based watermarking methods. Experimental results show robust performance of the PCA based method against most prominent attacks.

Correction to "The analysis of slug tests in the frequency domain" (WRR 25(11), pp. 2388-2396

1990 ◽  
Vol 26 (8) ◽  
pp. 1863-1863
Author(s):  
Paul Marschall ◽  
Baldur Barczewski
Keyword(s):  
Frequency Domain ◽  
Slug Tests

Methods of calibration of high-resolution optical reflectometers operating in the frequency domain

2018 ◽  
pp. 40-43
Author(s):  
V.V. GRIGORIEV ◽  
◽  
V.E. KRAVTSOV ◽  
A.K. MITUEV ◽  
E.A. MOROZ ◽  
...  
Keyword(s):  
High Resolution ◽  
Frequency Domain
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