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 6 of 6 for “"Rate/Distortion optimization"”.
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Video coding with adaptive vector quantization and rate distortion optimization
… of this dissertation is to investigate <br>rate-distortion optimization and to evaluate the prospects of adaptive <br>vector quantization for digital video compression. <br>Rate-distortion optimization aims to improve compression performance <br>using discrete optimization algorithms. We …
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Implementing rate-distortion optimization on a resource-limited H.264 encoder
This thesis models the rate-distortion characteristics of an H.264 video compression encoder to improve its mode decision performance. First, it provides a background to the fundamentals of video compression. Then it describes the problem of estimating rate and distortion of a macroblock given …
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Dynamically Reconfigurable Architectures and Systems for Time-varying Image Constraints (DRASTIC) for Image and Video Compression
… systems. For different scenarios, power, bitrate and image quality can impose significant time-varying constraints. For example, mobile devices (e.g., phones, tablets, laptops, UAVs) come with significant constraints on energy and power. Similarly, computer networks provide time-varying …
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"""Travelling Without Moving"": A Study on the Reconstruction, Compression, and Rendering of Three-Dimensional Environments for Telepresence"
… from planar arrays of cameras and generates dense depth maps with multiple values per pixel. Second, we introduce a novel codec for the static depth-image-based representation, which jointly estimates and encodes the unknown depth map from multiple views using a novel rate-distortion …
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The role of control information in wireless link scheduling
… throughput. Moreover, we investigate strategies for controlling the network with limited CSI. In the first half of the thesis, we consider a multi-channel communication system in which the transmitter chooses one of M channels over which to transmit. We model the channel state using an …
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JPEG2000-based scalable interactive video (JSIV)
… client's decisions. We solve the general JSIV optimization problem by employing Lagrange-style rate-distortion optimization in a two pass iterative approach. We show that this approach converges under workable conditions, and we also show that the optimal solution for a given rate is not …