Graduate Thesis Or Dissertation
 

Design of on-line arithmetic networks for signal processing applications : a color filter implementation

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  • Networks of on-line modules for Digital Signal Processing (DSP) applications have been designed and analyzed in many papers. Various arguments have been made for on-line arithmetic over other bit-serial and parallel approaches. However, the majority, if not all of the on-line network implementations presented throughout the literature do not take into account the input and interfacing issues involved when dealing with real applications. Most studies of on-line network implementations are limited to common components of DSP algorithms but do not consider the impact they have on the whole system. This thesis investigates the use of on-line arithmetic in implementing a color image filtering algorithm. A complete analysis of the algorithm takes into account input value ranges, memory requirements, error analysis, and processing throughput. An equal emphasis is placed on what the end-user is to expect. The realization of the image processing algorithm is presented using conventional on-line modules. A comparison to the estimates of parallel and other traditional bit-serial approaches is done. The results show that the on-line implementation saves the designer an overwhelming amount of area as opposed to a strictly parallel implementation and reduces complexity when compared to an implementation using traditional bit-serial modules, while still providing a significant throughput.
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