The optical sparse aperture system achieves almost the same resolution as a conventional full filled aperture telescope but with a lower weight and cost. However, the greatly reduced modulation transfer function (MTF) causes significant blurring and loss of contrast in the observed image. The image restoration algorithms can correct the blurring if the actual optical transfer function (OTF) or point spread function (PSF) is given. Usually, the OTF and PSF captured by experiment is assumed to be the actual OTF and PSF, which are considered as the best match for image restoration. However, the noise contained within the captured PSF or OTF may prevent successful restoration. Here, we investigate the restored image by the captured PSF and the calculated PSF based on array configuration. The calculated PSF produced a better result than the captured PSF.