Design Space Exploration for Run-Time Management of a Reconfigurable System for Video Streaming - Multi-objective Design Space Exploration of Multiprocessor SoC Architectures - page 193

Fig. 9.2 MPEG4 encoder
versions parallelized over a
given number of threads (up
to 7)

ME ME ME

MC MC MC

TC TC TC

TU TU TU

EC EC EC

BP BP BP

a 1 Thread b 3 Thread c 4 Thread

ME ME ME

MC MC

MC

TC TC

TC

TU TU

TU

EC EC

EC

BP BP BP

d 5 Thread e 6 Thread f 7 Thread

in an application version is equivalent to the resource cost ρ of the specific version.
The six available MPEG4 encoder versions are parallelized for the execution on 1, 3,
4, 5, 6 and 7 processors. Since every version is parallelized over a different number
of threads, in the following the resource cost ρ is also used to uniquely identify the
MPEG4 encoder version.

9.2.2 Automotive Cognitive Safety System

The use case studied in this Chapter is an Automotive Cognitive Safety System
(ACSS). In this context, a vehicle is equipped with a wide range of digital sensors
(such as cameras and radars) and it is able to identify emergency conditions. The
final goal of the ACSS is to keep passengers safer assisting the driver during emer-
gency situations. In particular, the ACSS is able to identify and actuating emergency
measures for the following scenarios:

￿ Forward collision warning.
￿ Automatic pre-crash emergency braking.
￿ Lane departure warning and guidance.
￿ Lane change and blind spot assist.
The vehicle is also provided with three digital cameras associated with left, right and
central mirrors respectively, as shown in Fig. 9.3 .