mtch.h File Reference

Functions
void	mtch (dmat **mtche, dmat **neaout, const dmat *i0, const dmat *gx, const dmat *gy, const dmat *qe, const dmat *dbkgrnd2, const dmat *dbkgrnd2c, real bkgrnd, real bkgrndc, real rne, real pixthetax, real pixthetay, real pixrot, int radgx, int cr)
void	mtch2 (dmat **mtche, dmat **nea, const dmat *i0, const dmat *gx, const dmat *gy, int cr)
void	mtch_cell (dcell **pmtche, dcell **psanea, dmat **pi0sum, dmat **pi0sumsum, const dcell *i0s, const dcell *gxs, const dcell *gys, const dmat *qe, const dcell *bkgrnd2, const dcell *bkgrnd2c, real bkgrnd, real bkgrndc, real rne, real pixthetax, real pixthetay, dcell *pixrots, int radgx, int mtchcr, real sigratio)
dmat *	derive_by_fft (const dmat *i0, real theta)

Function Documentation

mtch()

void mtch	(	dmat **	mtche,
		dmat **	neaout,
		const dmat *	i0,
		const dmat *	gx,
		const dmat *	gy,
		const dmat *	qe,
		const dmat *	dbkgrnd2,
		const dmat *	dbkgrnd2c,
		real	bkgrnd,
		real	bkgrndc,
		real	rne,
		real	pixthetax,
		real	pixthetay,
		real	pixrot,
		int	radgx,
		int	cr
	)

Generating matched filter from averaged short exposure images.

Parameters

[out]	mtche	the matched filter
[out]	neaout	the subaperture noise equivalent angle
[in]	i0	Averaged subaperture image
[in]	gx	derivative of i0 along x (r)
[in]	gy	derivative of i0 along y (a)
[in]	qe	non uniform quantum efficiency (optional)
[in]	dbkgrnd2	background
[in]	dbkgrnd2c	background calibration
[in]	bkgrnd	global background
[in]	bkgrndc	global background calibration
[in]	rne	Detector read noise
[in]	pixthetax	Size of pixel along x
[in]	pixthetay	Size of pixel along y
[in]	pixrot	Rotation (CCW, radian) of pixel island. 0 for cartesian
[in]	radgx	1: gx/gy is along r/a coord. 0 for cartesian.
	cr	Constraint flag 0: disable, 1: both axis, 2: x only, 3: y only

mtch2()

void mtch2	(	dmat **	mtche,
		dmat **	nea,
		const dmat *	i0,
		const dmat *	gx,
		const dmat *	gy,
		int	cr
	)

A simplified wrapper for mtch

mtch_cell()

void mtch_cell	(	dcell **	pmtche,
		dcell **	psanea,
		dmat **	pi0sum,
		dmat **	pi0sumsum,
		const dcell *	i0s,
		const dcell *	gxs,
		const dcell *	gys,
		const dmat *	qe,
		const dcell *	bkgrnd2,
		const dcell *	bkgrnd2c,
		real	bkgrnd,
		real	bkgrndc,
		real	rne,
		real	pixthetax,
		real	pixthetay,
		dcell *	pixrots,
		int	radgx,
		int	mtchcr,
		real	sigratio
	)

The routine used to generate matched filter from WFS mean short exposure pixel intensities.

Parameters

[out]	pmtche	matched filter.
[out]	psanea	subaperture noise equivalent angle
[out]	pi0sum	sum of subaperture intensity
[out]	pi0sumsum	sum of all subaperture intensity
	i0s	Subaperture intensities
	gxs	Subaperture intensity gradients along x (radial)
	gys	Subaperture intensity gradients along y (azimuthal)
	qe	Quantum efficiency of each pixel
	bkgrnd2	bkgrnd image
	bkgrnd2c	bkgrnd correction image
	bkgrnd	bkgrnd per pixel
	bkgrndc	bkgrnd correction per pixel
	rne	Read out noise per pixel
	pixthetax	Pixel size along x (radial)
	pixthetay	Pixel size along y (azimuthal)
	pixrots	subaperture pixel rotation.
	radgx	Leave gradients at radial direction
	mtchcr	constraint. -1: auto
	sigratio	scale signal level to increase NEA. default: 1

derive_by_fft()

dmat* derive_by_fft	(	const dmat *	i0,
		real	theta
	)

Compute the derivative using FFT method along direction specified by theta (radian).