  Alternative reconstruction method is proposed on retrieving the object exit
wave function (OEW) directly from the recorded image intensity pattern in high
resolution transmission electron microscopy (HRTEM). The method is based on
applying a modified intensity equation representing the HRTEM image. A
comparative discussion is provided between the existing methodologies involved
in reconstruction of OEW, off-axis electron holography and the present
proposal. Phase shift extracted from the experimental images of MoS2, BN and
ZnO are found to be in excellent agreement with the theoretical reference
values. Additionally, it is shown that the Fourier series expansion of
diffraction pattern is effective in retrieving the isolated and periodic image
functions of certain form directly. However, for aperiodic object information
e.g., defects, dopants, edges etc., the first method works in entirety.
