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Books > Professional & Technical > Energy technology & engineering > Electrical engineering
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Multidimensional Processing of Video Signals (Paperback, Softcover reprint of the original 1st ed. 1992)
Loot Price: R4,322
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Multidimensional Processing of Video Signals (Paperback, Softcover reprint of the original 1st ed. 1992)
Series: The Springer International Series in Engineering and Computer Science, 171
Expected to ship within 10 - 15 working days
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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.
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