Phase unwrapping algorithm plays very important role in noncontract optical profilometry,
beacuse the phase map acquired derectly is limited from π to− π, which is called wrapped …

Terahertz frequency (THz) radiation lies in between the microwave and infrared ranges.
While it is strongly absorbed by water, it is nonionizing and has low possibility of causing …

The main objective of this book is to present the basic theoretical principles behind modern
fringe-pattern analysis as applied to optical metrology. In addition to this, for the …

We present a phase-imaging method with an axial range that can in principle be arbitrarily
large compared to the wavelength and does not involve the usual phase unwrapping by …

Abstract 2D phase-unwrapping algorithms (PUAs) are commonly used to obtain a
continuous phase map from the sawtooth-shaped phase map. However, implementing …

Rapid advancement in vision recording technologies is increasing the importance and
production of video data in a wide range of applications. This paper proposed a novel …

We apply the techniques of digital holography to obtain microscopic three-dimensional
images of biological cells. The optical system is capable of microscopic holography with …

This paper presents an effective algorithm for absolute phase (not simply modulo-2-/spl pi/)
estimation from incomplete, noisy and modulo-2/spl pi/observations in interferometric …

Phase retrieval from a single-frame interferogram is a meaningful approach in dynamic and
real-time interferometry. However, existing demodulation methods are susceptible to real …

Most interferogram demodulation techniques give the detected phase wrapped owing to the
arctangent function involved in the final step of the demodulation process. To obtain a …