Searched for: subject%3A%22DCT%22
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document
Liu, Zheheng (author)
In this thesis, we investigate a sparse basis for ultrasound images, so that we can use sparse regularization in imaging. Actually, there are few previous researches explicitly demonstrating that medical ultrasound images can be sparsified for some dictionary. We consider various orthogonal transforms such as wavelet transforms, cosine...
master thesis 2019
document
Fan, D. (author)
The aim of the project is to develop an ECG signal compression algorithm that has a high compression ratio while guaranteeing signal quality. An electrocardiography (ECG) signal is a representation of cardiac activity and has an need to be compressed to reduce data storage requirements and energy cost of transmission. Previous ECG signal...
master thesis 2014
document
Nervo, L. (author), King, A. (author), Wright, J.P. (author), Ludwig, W. (author), Reischig, P. (author), Quinta da Fonseca, J. (author), Preuss, M. (author)
A comparison of the performance of X-ray diffraction tomography, a near-field diffraction technique, and a far-field diffraction technique for indexing X-ray diffraction data of polycrystalline materials has been carried out by acquiring two sets of diffraction data from the same polycrystalline sample volume. Both approaches used in this study...
journal article 2014
document
Abbasfard, M. (author)
Watermarking is the process of inserting predefined patterns into multimedia data in a way that the degradation of quality is minimized and remain at an imperceptible level. Many digital watermarking algorithms have been proposed in special and transform domains. The techniques in the spatial domain still have relatively low-bit capacity and are...
master thesis 2009
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Pham, T.Q. (author), Van Vliet, L.J. (author), Schutte, K. (author)
This paper proposes an example-based Super-Resolution (SR) algorithm of compressed videos in the Discrete Cosine Transform (DCT) domain. Input to the system is a Low-Resolution (LR) compressed video together with a High-Resolution (HR) still image of similar content. Using a training set of corresponding LR-HR pairs of image patches from the HR...
conference paper 2006
Searched for: subject%3A%22DCT%22
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