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» Analog complex wavelet filters
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ISCAS
2005
IEEE
157views Hardware» more  ISCAS 2005»
13 years 10 months ago
Analog complex wavelet filters
Abstract— This paper presents an analog implementation of the complex wavelet transform using both the complex first order system (CFOS) and the Pad´e approximation. The comple...
Sandro A. P. Haddad, J. M. H. Karel, Ralf L. M. Pe...
ISCAS
2003
IEEE
102views Hardware» more  ISCAS 2003»
13 years 10 months ago
Analog wavelet transform employing dynamic translinear circuits for cardiac signal characterization
An analog QRS complex detection circuit, for pacemaker applications, based on the Wavelet Transform (WT) is presented. The system detects the wavelet modulus maxima of the QRS com...
Sandro A. P. Haddad, Richard Houben, Wouter A. Ser...
ISCAS
2002
IEEE
89views Hardware» more  ISCAS 2002»
13 years 9 months ago
Mapping the wavelet transform onto silicon: the dynamic translinear approach
In this paper, an analog implementation of the Wavelet Transform (WT) is presented. The circuit is based on the Dynamic Translinear (DTL) circuit technique and implements, by mean...
Sandro A. P. Haddad, Wouter A. Serdijn
TIP
2010
142views more  TIP 2010»
12 years 11 months ago
A Blind Watermarking Scheme Using New Nontensor Product Wavelet Filter Banks
As an effective method for copyright protection of digital products against illegal usage, watermarking in wavelet domain has recently received considerable attention due to the de...
Xinge You, Liang Du, Yiu-ming Cheung, Qiuhui Chen
ICIP
2003
IEEE
14 years 6 months ago
Design of Q-shift complex wavelets for image processing using frequency domain energy minimization
This paper proposes a new method of designing finitesupport wavelet filters, based on minimization of energy in key parts of the frequency domain. In particular this technique is ...
Nick G. Kingsbury