Biomedical Engineering Reference
In-Depth Information
needed system to be adjusted to the human limitations in speed and shaping of
human-related symbols, like colours and shapes, will increase the interaction. The
following examples shows that in complex processes, there is an obvious need to
change the focussing on feature singleton and quantitative values, describing only
indirect relations to the overall process condition. The two approaches below will
show examples of complex visual communication systems indicating the process
behaviour in conjunction with human capability.
The approaches shown in these two applications that are based on two dif-
ferent techniques, use advanced technology, based on control theory and chaos
algorithms respectively. The common issue is however the human-based quali-
ties that may effectively attract the operator's attention, i.e., visual attention-based
indication.
7.2.1.2
OPERATOR PORTAL
In the illustrated example, as described in Section 7.2.3, the glyph representation
concept is represented as a glyph graph, in order to visualise large data sets. It is
then possible by using a glyph graph to explore the variable relation to each other.
In the industry, as in many complex related areas, there is an obvious need to trans-
fer information from advanced and ill-structured processes into more compressed
and secure information flow to ensure the overall performance. The main issue
however, is the procedure of how to present essential process status to an operator,
who normally does not exhibit the skills of a mathematical or control specialist,
to handle a huge amount of information in real time. There is a therefore a need
to present a reduced dimensionality in interfacing from an n-dimensional infor-
mation plot into a two-dimensional information chart. The presentation portal is
actually the operator room, where the operator is able to detect activities in dif-
ferent process states in real time as well as receiving an overall process survey.
The process presentation system has a visual impact, since it facilitates the human-
process interaction. The visual context is demonstrated by underlying algorithms
for control purposes and provides an effective human-system interaction.
The operator portal shown in the Section 7.2.2, is another type of visual com-
munication. The chaos-based concept approach will attract human-based single-
ton. An overall visual presentation is presented that indicates whether the process
is within one of totally three existing modes:
— within a normal mode
— outside the limitations or
— on the way to become uncontrolled.
This example will provide a controlled state of presenting information in a compre-
hensive way. The presentation approach in the chaos-based concept communicates
the process's overall status with only one single presentation event plot. On the
other hand, the glyph graph also examplifies an additional feature of detailed in-
formation in a number of underlying presentation plots. However, both examples
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