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Sökning: WFRF:(O'Nils Mattias) > Olsson Leif

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  • Thörnberg, Benny, et al. (författare)
  • Bit-Width Constrained Memory Hierarchy Optimization for Real-Time Video Systems
  • 2007
  • Ingår i: IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems. - 0278-0070. ; 26:4, s. 781-800
  • Tidskriftsartikel (refereegranskat)abstract
    • The great variety of pixel dynamics of real-time video processing systems, 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 Non Linear Program (INLP) formulation for the optimization of the memory hierarchy of real-time video processing systems. 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 percent compared to a non optimal memory hierarchy.
  • Thörnberg, Benny, et al. (författare)
  • Optimization of memory allocation for real-time video processing on FPGA
  • 2005
  • Ingår i: 16th International Workshop on Rapid System Prototyping, Proceedings - SHORTENING THE PATH FROM SPECIFICATION TO PROTOTYPE. - IEEE conference proceedings. - 0-7695-2361-7 ; s. 141-147
  • Konferensbidrag (refereegranskat)abstract
    • We present an optimization model for the allocation of shift registers to dual ported FPGA memory blocks. Shift registers are used in real-time video processing for the storage of data flow dependencies. The model is formalized into a mixed integer linear program that can be executed using a general solver. Allocation results from realistic video systems verify the correctness of the model. This model serves as a formal specification and setup for the development of an efficient allocation heuristic.
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