Quadratic of Half Ellipse Smoothing Technique for Cervical Cells FTIR Spectra in a Screening System

Fourier Transform Infrared (FTIR) spectroscopy technology has been currently used to study the structural changes of cells at the molecular level in a cervical cancer. However, in the FTIR data acquisition process, it has undergone twice noise degradations. In this study, to apply the FTIR spectra for input data into classification tools, the FTIR spectra need to be smoothed before feature extraction process. A smoothing technique namely Quadratic of Half Ellipse (QHE) filter was proposed for smoothing the cervical cells FTIR spectra. The QHE filter was tested using 850 cervical cells FTIR spectra. The cervical cells FTIR spectra were corrupted by 20, 25, 30, 25, 40, 45 dB of S/N. The proposed filter achieved good performance for smoothing the corrupted cervical cells FTIR spectra.