Abstract:
Lie detection is a way to gather truth-based, useful information from people
under precarious circumstances. Often, the variations in human traits upon
exhibiting deceit are ignored by humans, resulting in an unsavoury situation
involving the authorities chasing the same goons whom they had already captured
but let them go due to inconclusive evidence. Pakistan’s harrowing crime rate, and
a lack of an efficient and effective system to oust the suspects during interrogation
without jeopardizing their human rights, have led us to develop a smart solution to
this problem once and for all. Our project delivers a hybrid model, a combination of
intrusive and non-intrusive approaches of lie detection. Monitoring of the suspect
takes place intrusively via pulse sensor. Additionally, non-intrusive monitoring
would be taking place side-by-side via a camera, input of which will be preprocessed, and various automation methodologies will be applied on it, after which
comparisons are made against datasets available for micro expressions. This results
in our hybrid approach which, combines the two steps into one which leads to an
improved decision making in controlled environment. Limitation of this project are
currently due to the lack of dataset of people with deformities on their face, which
makes it extremely difficult to calculate their micro expressions with automated
methodologies. This project also lacked in terms of the hardware since we were not
able to get a RaspberryPi Camera Module as well as a RaspberryPi 4, which made
us resort to using our webcam to record micro-expressions and using an Arduino
Uno as the micro-controller. The direct consequence of this on our project was that
it resulted in a very jittery camera-feed, and we faced difficulty in compiling our
fused dataset for our Lie Detection model to be trained on. It also caused a lot of
“incorrect” pulse sensor input due to the use of an Arduino. However, the solution
which we present can be transformed into a collaborative project with the
intelligence agencies of Pakistan to elevate the living standards of the common folk,
by aiding them through a renewed sense of security and safety.
