In this contribution we investigate the error robustness tools offered by the JPEG2000 coding standard. Error robustness is supported on entropy coding level and packet level. A synchronization loss caused by a packet loss can be prevented if marker segments are inserted into the code stream. However, a packet loss and the related loss of wavelet coefficients causes a severe visual distortion. ...

We examine the use of wavelet packets for the fast solution of integral equations with a highly oscillatory kernel. The redundancy of the wavelet packet transform allows the selection of a basis tailored to the problem at hand. It is shown that a well chosen wavelet packet basis is better suited to compress the discretized system than wavelets. The complexity of the matrix–vector product in an ...

In this work an automatic fault classification system is developed for bearing fault classification of three phase induction motor. The system uses the wavelet packet decomposition using ‘db8’ mother wavelet function for feature extraction from the vibration signal, recorded for various bearing fault conditions. The selection of best node of wavelet packet tree is performed by using best tree a...

Last years, Wavelet Packet Modulation (WPM) or Wavelet Packet Transform based Orthogonal Frequency Division Multiplexing (WPT-OFDM) have been introduced to wired and wireless communication fields as efficient Multicarrier Modulation (MCM) techniques. The wavelets have interesting features such as flexibility, compatibility and localization in both time and frequency domains with no need to use ...

In this paper, a novel hybrid scheme with constrained Unequal Error Protection (UEP) and data hiding is proposed which maximizes the perceptual quality of the video at the end user to compensate for the effects of channel losses. The technique involves (1) implementing a forcing function which weighs the objective perceptual quality of the video frame based on a hidden mark signal to give optim...