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Bit-Width Constrained Memory Hierarchy Optimization for Real-Time Video Systems

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7 Author(s)
Thornberg, B. ; Mid Sweden Univ., Sundsvall ; Palkovic, M. ; Qubo Hu ; Olsson, L.
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The great variety of pixel dynamics of real-time video-processing systems (RTVPS), ranging from color, grayscale, or binary pixels, means that a careful design and specification of bit widths is required. It is obvious that the bit-width specification will affect the total memory storage requirement. However, what is not so obvious is that the bit-width specification will also affect the design of the memory hierarchy, an impact similar for both hardware and software implementations. We have developed an integer-nonlinear-program formulation for the optimization of the memory hierarchy of RTVPS. An active surveillance video camera is introduced as a test case. We demonstrate how the optimization model can reduce the on-chip memory storage by 61% compared to a nonoptimal memory hierarchy

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Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on  (Volume:26 ,  Issue: 4 )