19-5 Reconstruction of One Dimensional Image beyond Nyquiet Frequency Using Low-pass Filters

Abstract

The resolution of the CCD image sensor is determined by a number of pixels. If an input image, which has the frequency components higher than Nyquist frequency, are picked up by CCD image sensor, its generates aliasing. In this paper, in the simulation, high frequency components beyond Nyquist frequency were successfully reproduced by low-pass filters and digital signal processing. Using this method, the resolution of the CCD image sensor can be progressed more than twice as high as the Nyquist frequency.