NRL

A nearer neighbor matching and compression method and apparatus provide matching of data vectors to exemplar vectors. A data vector is compared to exemplar vectors contained within a subset of exemplar vectors, i.e., a set of possible exemplar vectors, to find a match. After a match is found, a probability function assigns a probability value based on the probability that a better matching exemplar vector exists. If the probability that a better match exists is greater than a predetermined probability value, the data vector is compared to an additional exemplar vector. If a match is not found, the data vector is added to the set of exemplar vectors. Data compression may be achieved in a hyperspectral image data vector set by replacing each observed data vector representing a respective spatial pixel by reference to a member of the exemplar set that â€œmatches' the data vector. As such, each spatial pixel will be assigned to one of the exemplar vectors.

Inventors:

Palmadesso, Peter J.; Bowles, Jeffrey H.; Gillis, David B.

Patent Number:

Technical domain:

IT and Software

FIle Date:

2002-03-29

Grant Date:

2005-09-20

Grant time:

1,271 days

Grant time percentile rank:

23

Claim count percentile rank:

7

Citations percentile rank:

1

'Cited by' percentile rank:

1

Assignee:

US NAVY