Overview
- Editors:
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Giovanni L. Sicuranza
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Universita Degli Studi di Trieste, Italy
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Sanjit K. Mitra
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University of Califonia, Santa Barbara, USA
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Table of contents (8 chapters)
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- Giovanni L. Sicuranza, Sanjit K. Mitra
Pages 3-4
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- Petri Haavisto, Yrjö Neuvo, Janne Juhola
Pages 5-22
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- G. Cortelazzo, G. A. Mian, R. Rinaldo
Pages 23-52
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- Martin Vetterli, Kamil Metin Uzf
Pages 53-79
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- Rachel Alter-Gartenberg, Carl L. Fales, Friedrich O. Huck, Zia-Ur Rahman, Stephen E. Reichenbach
Pages 81-102
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Back Matter
Pages 189-189
About this book
A color time-varying image can be described as a three-dimensional vector (representing the colors in an appropriate color space) defined on a three-dimensional spatiotemporal space. In conventional analog television a one-dimensional signal suitable for transmission over a communication channel is obtained by sampling the scene in the vertical and tem poral directions and by frequency-multiplexing the luminance and chrominance informa tion. In digital processing and transmission systems, sampling is applied in the horizontal direction, too, on a signal which has been already scanned in the vertical and temporal directions or directly in three dimensions when using some solid-state sensor. As a conse quence, in recent years it has been considered quite natural to assess the potential advan tages arising from an entire multidimensional approach to the processing of video signals. As a simple but significant example, a composite color video signal, such as the conven tional PAL or NTSC signal, possesses a three-dimensional spectrum which, by using suitable three-dimensional filters, permits horizontal sampling at a rate which is less than that re quired for correctly sampling the equivalent one-dimensional signal. More recently it has been widely recognized that the improvement of the picture quality in current and advanced television systems requires well-chosen signal processing algorithms which are multidimen sional in nature within the demanding constraints of a real-time implementation.
Editors and Affiliations
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Universita Degli Studi di Trieste, Italy
Giovanni L. Sicuranza
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University of Califonia, Santa Barbara, USA
Sanjit K. Mitra