An Eigenfilter-Based Approach to the Design of Time-Frequency Localization Optimized Two-Channel Linear Phase Biorthogonal Filter Banks

2014 ◽  
Vol 34 (3) ◽  
pp. 931-959 ◽  
Author(s):  
Manish Sharma ◽  
Vikram M. Gadre ◽  
Saket Porwal
Keyword(s):  
Filter Banks ◽  
Linear Phase ◽  
Time Frequency ◽  
Time Frequency Localization

Phase Watermarking of Images with Complex-Valued Linear-Phase Subband Filter Banks

2013 ◽  
Vol 339 ◽  
pp. 275-280
Author(s):  
Li Chen ◽  
Rong Hua Peng
Keyword(s):  
Frequency Band ◽  
Filter Banks ◽  
Low Frequency ◽  
Linear Phase ◽  
Time Frequency ◽  
Frequency Spread ◽  
Phase Filter ◽  
Dct Domain ◽  
Dct Coefficients ◽  
Complex Valued

A new algorithm is proposed for digital watermarking by applying complex-valued linear-phase filter banks to low frequency-band coefficients of images in the DCT domain. The watermark is conveyed in the phase spectrum of the subband coefficients. The robustness of the algorithm is examined in JPEG encoding with different qualities and compared with the DFT-based approach. Because only low frequency-band DCT coefficients are applied to complex-valued filter banks, the computational load introduced by the complex-valued filter banks is kept low. The watermark decoding is only accessible to users with the key information, i.e., impulse responses of the complex-valued linear-phase filter banks that designed with time-frequency spread property.

Analysis of the Time-Frequency Localization Property of the Filter Banks for Optical OFDM/OQAM Systems

2019 ◽  
Vol 37 (21) ◽  
pp. 5392-5405 ◽  
Author(s):  
Xi Fang ◽  
Yuchao Wang ◽  
Zhufeng Suo ◽  
Hua Jiang ◽  
Xianwei Gao ◽  
...  
Keyword(s):  
Filter Banks ◽  
Localization Property ◽  
Time Frequency ◽  
Time Frequency Localization ◽  
Optical Ofdm

scholarly journals Design of Linear Phase Nonuniform Filter Banks with Interpolated Prototype Filters

2012 ◽  
Vol 29 ◽  
pp. 435-440 ◽  
Author(s):  
Ming Wang ◽  
Jian Wan ◽  
Yan Zhao
Keyword(s):  
Filter Banks ◽  
Linear Phase

scholarly journals A class of M-channel linear-phase biorthogonal filter banks and their applications to subband coding

1999 ◽  
Vol 47 (2) ◽  
pp. 564-571 ◽  
Author(s):  
S.C. Chan ◽  
A. Nallanathan ◽  
T.S. Ng ◽  
P.C.K. Kwok
Keyword(s):  
Filter Banks ◽  
Subband Coding ◽  
Linear Phase
Sign in / Sign up

Export Citation Format

Share Document