Impact of Bit-Width specification on the memory hierarchy for a real-time video processing system

• 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. A real-life surveillance system is introduced, as a demonstration application showing how the optimal allocation of shift registers for the storage of intermediate results is sensitive to bit-widths. From this we conclude, that careful memory hierarchy design where bit-widths are considered can reduce the total on-chip memory storage requirement by 61 percent compared to a non-optimal design.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

Keyword

Bit-width

memory hierarchy

polyhedral

video

Electrical engineering, electronics and photonics

Elektroteknik, elektronik och fotonik

Publication and Content Type

ref (subject category)

kon (subject category)