Phase Shifting

Collaboration diagram for Phase Shifting:

Functions
bool	ophSig::getComplexHFromPSDH (const char *fname0, const char *fname90, const char *fname180, const char *fname270)
	Extraction of complex field from 4 phase shifted interference patterns. More...
bool	ophSig::getComplexHFrom3ArbStepPSDH (const char *f0, const char *f1, const char *f2, const char *fOI, const char *fRI, int nIter)
	Extraction of complex field from 3 phase shifted interference patterns with arbitrary unknown shifts. More...

Detailed Description

Algorithm

• Extract complex field from 4 interference patterns with 90 degree phase shifts of the reference wave Store the result complex field to the member variable ComplexH
  
• Extract complex field from 3 interference patterns with arbitrary phase shifts of the reference wave Store the result complex field to the member variable ComplexH

Reference

[ref] L.Z. CAi, Q. Liu, and X.L. Yang, Opt. Lett. 28(19) 1808 (2003)

Function Documentation

getComplexHFrom3ArbStepPSDH()

bool ophSig::getComplexHFrom3ArbStepPSDH	(	const char *	f0,
		const char *	f1,
		const char *	f2,
		const char *	fOI,
		const char *	fRI,
		int	nIter
	)

Extraction of complex field from 3 phase shifted interference patterns with arbitrary unknown shifts.

Parameters

f0,f1,f2	Input image files for 3 interference patterns
fOI,Input	image file for object wave intensity
nIter	The number of the iterations in estimating the phase shift

Returns

if works well return 0 or error occurs return -1

temporary. only because save function clamps negative values to zero.

Definition at line 1732 of file ophSig.cpp.

getComplexHFromPSDH()

bool ophSig::getComplexHFromPSDH	(	const char *	fname0,
		const char *	fname90,
		const char *	fname180,
		const char *	fname270
	)

Extraction of complex field from 4 phase shifted interference patterns.

Parameters

fname0,fname90,fname180,fname270

Input image files for 4 interference patterns

Returns

if works well return 0 or error occurs return -1

Definition at line 1556 of file ophSig.cpp.