Bad Pixel Modified Interpolation for Astronomical Images

Abstract

We present a new method of interpolation for the pixel brightness estimation\nin astronomical images. Our new method is simple and easily implementable. We\nshow the comparison of this method with the widely used linear interpolation\nand other interpolation algorithms using one thousand astronomical images\nobtained from the Sloan Digital Sky Survey. The comparison shows that our\nmethod improves bad pixels brightness estimation with four times lower mean\nerror than the presently most popular linear interpolation and has a better\nperformance than any other examined method. The presented idea is flexible and\ncan be also applied to presently used and future interpolation methods. The\nproposed method is especially useful for large sky surveys image reduction but\ncan be also applied to single image correction.\n