Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"signal compression"”.
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Globally optimal algorithms for multiple-transform signal compression
In video compression, a single transform such as the DCT is typically used. Multiple-transforms such as directional 1-D DCTs have been proposed to exploit the different statistical characteristics of motion compensation residuals. Many issues are associated with this scenario. In this thesis, we …
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Signal compression and reconstruction using multiple bases representation
The problem of efficient signal communication at low data rates involves, in general, the encoding of the source for maximum data compression at the transmitter end, and the reconstruction using the received information and all the available a priori or side information at the receiver end. In this …
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SPARSE RECOVERY BY NONCONVEX LIPSHITZIAN MAPPINGS
… mathematics and computer science, especially in signal and image processing fields. The general framework of sparse representation is now a mature concept with solid basis in relevant mathematical fields, such as probability, geometry of Banach spaces, harmonic analysis, theory of computability, …
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Explorations in low-cost compliant robotics
… Computational modeling of hysteresis, signal compression, and backlash are also explored to compensate for the non-idealities often found in cheap mechanical parts. Three proof-of-concept systems are described along with a set of experiments used to test their capabilities. Finally, …
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Learning Sparse Graph Laplacian with K Eigenvector Prior via Iterative GLASSO and Projection
… graph is an important precursor to many graph signal processing (GSP) tasks, such as graph signal compression and denoising. Previous graph learning algorithms either make assumptions on graph connectivity (e.g., graph sparsity), or make individual edge weight assumptions such as positive edges …
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A low-power analog logarithmic map circuit with offset and temperature compensation for use in bionic ears
… in many applications that require non-linear signal compression, such as in speech recognition and cochlear implants. A logarithmic current-mode A/D converter with temperature compensation and automatic offset calibration is presented in this paper. It employs a dual-slope, auto-zeroing …
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Time frequency analysis techniques in terahertz pulsed imaging
… and processing THz pulses, particularly in signal compression. Finally, clustering algorithms in time, frequency, and time-frequency based feature spaces demonstrate that such tools have potential application in the segmentation of THz images into their constituent regions. The analyses …
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A real-time, reconfigurable system for energy, error-resilient, and scalable lossless ECG coding
… low hardware and power usage, provides lossless signal compression, and provides recovery of as much data as possible in the event of data corruption of packets during transmission. An entropy based compression algorithm is developed based on the Huffman code which is then transformed to …
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Signal representations: from images to irregular-domain signals
… play a vital role in many problems in signal processing and related fields, ranging from signal compression and denoising to inverse problems. This thesis studies the design and applications of various representation systems for several classes of signals including images and signals on …
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Learning robust and efficient point cloud representations
L'abstract è presente nell'allegato / the abstract is in the attachment