Digital image centering. I

Details Digital image centering. I Digital image centering. I

Dec 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975assl...54..411v&link_type=abstract

In: Image processing techniques in astronomy; Proceedings of the International Conference, Utrecht, Netherlands, March 25-27, 19

Astronomy and Astrophysics

Astronomy

21

Digital Systems, Imaging Techniques, Microdensitometers, Position Errors, Positioning, Algorithms, Computer Techniques, Density Distribution, Hubble Space Telescope, Instrument Errors, Optical Data Processing

Scientific paper

A series of parallax plates have been measured on a PDS microdensitometer to assess the possibility of using the PDS for precision relative astrometry and to investigate centering algorithms that might be used to analyze digital images obtained with the Large Space Telescope. The basic repeatability of the PDS is found to be plus or minus 0.6 micron, with the potential for reaching plus or minus 0.2 micron. A very efficient centering algorithm has been developed which fits the marginal density distributions of the image with a Gaussian profile and a sloping background. The accuracy is comparable with the best results obtained with a photoelectric image bisector.

Affiliated with

Also associated with

No associations

Rating

Digital image centering. I does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Digital image centering. I, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital image centering. I will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1577295