TIMOTHY FRANCIS PROHASKA
Pilots at Millview Rd, Olathe, KS
License number
Kansas A4437287
Issued Date
Jan 2017
Expiration Date
Jan 2019
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
11442 S Millview Rd, Olathe, KS 66061
Professional information
Method And Apparatus For Registering Color Separation Film
US Patent:
4849914, Jul 18, 1989
Filed:
Sep 22, 1987
Appl. No.:
7/099800
Inventors:
Gerard G. R. Medioni - Beverly Hills CA
Monti R. Wilson - Overland Park KS
Timothy F. Prohaska - Olathe KS
Lynn R. Poretta - Roeland Park KS
Monti R. Wilson - Overland Park KS
Timothy F. Prohaska - Olathe KS
Lynn R. Poretta - Roeland Park KS
Assignee:
Opti-Copy, Inc. - Lenexa KS
International Classification:
G01S 1300
US Classification:
364526
Abstract:
An algorithmic based method and apparatus for registering halftone color separations using edge based registration techniques. Digital pictures are taken at two locations on each film, and, following optimal thresholding of the data, the edges are located by application of a Laplacian of a Gaussian edge detection operator. Sampling is used to reduce the computational requirements, and full resolution is restored by interpolation. The edge locations are corrected for operator edge bias, and the corrected edge points are linked into segments which are registered by the parameter space method. The initial offset is corrected for size differences by application of least squares correction techniques.