  The application of piezoelectric materials, such as Lead Zirconate Titanate
(ZrxTi1-x) O3 (PZT) is increasing in multiple dynamic industries such as
structural health monitoring, wireless energy harvesting devices, measuring
blood flow, etc.The main aim of this paper is to denoise the images generated
by dual point excitation and detection method for subsurface damage detection.
Nonetheless, these denoising schemes can be extended for other noisy images. In
order to study effectively, the subsurface defects in a PZT ceramics and from
its images the denoising schemes have been examined and a metric for the
quantification of the noise is proposed which was previously non-existent. A
delta pulse is used for excitation of the acoustic waves in PZT ceramics. The
metric aids in calculating the energy of the noise been removed and also to
verify the proficiency of the denoising technique been incorporated.
