  We generalize ERA method of PSF correction for more realistic situations. The
method re-smears the observed galaxy image(galaxy image smeared by PSF) and PSF
image by an appropriate function called Re-Smearing Function(RSF) to make new
images which have the same ellipticity with the lensed (before smeared by PSF)
galaxy image. It has been shown that the method avoids a systematic error
arising from an approximation in the usual PSF correction in moment method such
as KSB for simple PSF shape. By adopting an idealized PSF we generalize ERA
method applicable for arbitrary PSF. This is confirmed with simulated complex
PSF shapes. We also consider the effect of pixel noise and found that the
effect causes systematic overestimation.
