Mobile Application for Ulcer Detection
2. MATERIALS AND METHODS
The proposed system consists of two major
parts: the first part is a thermal image
acquisition system that is a smart phone along
with a mobile thermal camera, while the
second part is a standalone mobile application.
The complete system implementation
comprises three major steps: image
acquisition, image processing, and results
display (image interpretation). These steps are
described in detail in the following sections.
2.1. Thermal Image Acquisition System
The thermal image acquisition system consists
of two components: Samsung S6 smart phone
and FLIR ONE mobile thermal camera. The
FLIR ONE camera is made of two sensors,
light spectrum [23] . Smart applications using
FLIR ONE IRT Camera have been proposed
for finding temperature readings in electrical
based systems. The FLIR ONE IRT camera
can measure high temperature values of up
to 120 degrees Celsius. The camera can work
continuously for up to an hour after which it
needs to be recharged. Moreover, it does not
drain the phone’s battery while connected to
it. FLIR ONE IRT camera provides an excellent
base for thermal image acquisition. The FLIR
ONE IRT camera (android) is compatible
with various android devices. FLIR ONE also
provides a smart application that enables
the capturing of IRT images, which are
usually used for measuring the temperature
of electrical devices. However, they can also
"The complete system implementation
comprises three major steps: image
acquisition, image processing, and results
display (image interpretation)."
one is a Lepton thermal sensor, and the other
is a visible CMOS sensor. The visible image
is overlaid on the thermal image to show
the edges on the thermal image producing
a final MSX blended image by the FLIR
ONE IRT (infrared thermography) camera.
The image depicts the hot and cold regions
of the area that the camera captures [16].
The camera is based on the principle of
blackbody radiation where each body emits
its own thermal infrared light or thermal
energy, which can be seen only when viewed
through the thermal infrared region of the
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be used for medical applications with an
accuracy of up to 0.1 degree Celsius. The FLIR
ONE device requires some time for charging.
The device is simple to use based on plug and
use ideology [16] .
The used camera is based on the blackbody
radiation principle, where an object in the
infrared region is attributed by the energy
or temperature emitted from the body
[24]
. However, the reading can be affected
by light reflected from the object or its
surroundings. Hence, it is best to take the
images in a controlled environment where the