In this paper, we propose a hybrid video coder using the wavelet packet transform and motion compensation. To reduce the computational complexity of the wavelet packet decomposition, a novel criterion based on the rate-distortion function is proposed. After the wavelet packet transform, the successive quantization scheme and the adaptive arithmetic coder are applied for lossy wavelet coe cient ...

هدف از این پژوهش اعتبار سنجی پرسشنامه جدید ۴ عاملی سیستم خود انگیزشی زبان دوم بعنوان یکی عوامل تاثیرگذار بر یادگیری انگلیسی بوده است. در تحقیق طرح پیمایشی به شیوه ی الگوی معادلات ساختاری نوع تحلیل تأییدی استفاده شده تعداد ۵۹۹ نفر (۳۰۸ دانشجوی خانم و ۲۹۱ آقا) سطح پیش متوسطه رده سنی ۲۵-۱۸سال که دانشگاه آزاد اسلامی – واحد تهران شرق رشته های مختلف تحصیلی مشغول تحصیل می باشند، شرکت کردند. آنجائیکه ا...

We introduce a set of novel multiscale basis transforms for signals on graphs that utilize their "dual" domains by incorporating the "natural" distances between graph Laplacian eigenvectors, rather than simply using eigenvalue ordering. These dictionaries can be seen as generalizations classical Shannon wavelet packet dictionary to arbitrary graphs, and do not rely frequency interpretation eige...

The use of high performance computers for wavelet and wavelet packet based image coding is discussed. After a short description of wavelet and wavelet packet methods the existing literature concerning vector, parallel and VLSI wavelet transforms is reviewed. In the following an algorithm for wavelet packet best basis selection on moderate parallel MIMD architectures is introduced and an impleme...

This paper briefly describes the basic principle of wavelet packet analysis, and on this basis introduces the general principle of wavelet packet transformation for signal den-noising. The dynamic EEG data under +Gz acceleration is made a de-noising treatment by using wavelet packet transformation, and the de-noising effects with different thresholds are made a comparison. The study verifies th...

Near-best and best wavelet packet transforms were compared with wavelet transforms for the compression of polysomnograms in a low bitrate telemonitoring application. Near-best wavelet packet transforms provided better overall performance with respect to efficiency of computation and compression, and amenability for use in more sophisticated quality-on-demand algorithms. Keywords— near-best base...

a cochlear implant is an implanted electronic device used to provide a sensation of hearing to a person who is hard of hearing. the cochlear implant is often referred to as a bionic ear. this paper presents an undecimated wavelet‑based speech coding strategy for cochlear implants, which gives a novel speech processor. the undecimated wavelet packet transform (uwpt) is computed like the wavelet ...