Search for dissertations about: "Very low bitrate"
Showing result 1 - 5 of 6 swedish dissertations containing the words Very low bitrate.
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1. Very Low Bitrate Video Communication : A Principal Component Analysis Approach
Abstract : A large amount of the information in conversations come from non-verbal cues such as facial expressions and body gesture. These cues are lost when we don't communicate face-to-face. But face-to-face communication doesn't have to happen in person. With video communication we can at least deliver information about the facial mimic and some gestures. READ MORE
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2. Very low bitrate facial video coding : based on principal component analysis
Abstract : This thesis introduces a coding scheme for very low bitrate video coding through the aid of principal component analysis. Principal information of the facial mimic for a person can be extracted and stored in an Eigenspace. Entire video frames of this persons face can then be compressed with the Eigenspace to only a few projection coefficients. READ MORE
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3. Robustness in low power wide area networks
Abstract : During the past few years we have witnessed an emergence of Wide Area Networks in the Internet of Things area. There are several new technologies like LoRa, Wi-SUN, Sigfox, that offer long range communication and low power for low-bitrate applications. READ MORE
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4. Model-based coding : extraction, coding, and evaluation of face model parameters
Abstract : This thesis deals with model-based coding of human faces for low bitrate communication. The basicidea of model-based coding is that the appearance and motion of a human face are analysed. By thisanalysis, compact parameters allowing realistic visualization of a synthetic face are extracted. READ MORE
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5. Hilbert space frames and bases : a comparison of Gabor and wavelet frames and applications to multicarrier digital communications
Abstract : Several signal processing applications today are based on the use of different transforms. The signals under consideration are written as a linear combination (or series) of some predefined set of functions. Traditionally, orthogonal bases have been used for this purpose, for example, in the discrete Fourier transform. READ MORE