| Summary: | In tomography, there are two common projection
namely, parallel beam and fan beam. Both projections give a
different impact towards system performance and the image
itself. This paper will focus on the attenuation factor that affects
towards images in parallel projection. The focuses are to see the
differences between one, two, three and four projections towards
image performance. The projection is come from light that is
produced by LED infrared while photodiode is act as receiver.
Any appearance of object between transmitter and receiver will
change the voltage that is produce by receiver. The bigger the
object, the more voltage losses will be sensed. The voltage loss
will be manipulated to form an image where it is found out that
the more the projection is applied, the image will be displayed
clearer and have more information on it.
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