ROUND: Deproject Spirals or Elliptical Images

Form: ROUND dest source [PA=f] [E=e] [C=(r,c)] [NORM] [SINC]
dest
is the destination image buffer. It does not need to exist beforehand.
source
is the image buffer to transform
PA
is PA of object's major axis
E
gives its ellipticity = 1-b/a
C
gives its row and column center
NORM
renormalize pixel intensities
SINC
use high-accuracy sinc interpolation.

ROUND will deproject an image by assuming that the true shape of the object is a circle projected into an ellipse of a given position angle, ellipticity (1-b/a) and center. Creates a new image in the `dest' buffer from the original image in the `source' buffer.

The SINC keyword instructs ROUND to use high-accuracy sinc interpolation instead of the default bilinear interpolation algorithm.

The NORM keyword is used to renormalize the pixel intensities (surface brightness/pixel) in the transformed image.

See Also: POLAR