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Title: Restoration and analysis of amateur movies from the Kennedy assassination

Abstract

Much of the evidence concerning the assassination of President Kennedy comes from amateur movies of the presidential motorcade. Two of the most revealing movies are those taken by the photographers Zapruder and Nix. Approximately 180 frames of the Zapruder film clearly show the general relation of persons in the presidential limousine. Many of the frames of interest were blurred by focus problems or by linear motion. The method of cepstral analysis was used to quantitatively measure the blur, followed by maximum a posteriori (MAP) restoration. Descriptions of these methods, complete with before-and-after examples from selected frames are given. The frames were then available for studies of facial expressions, hand motions, etc. Numerous allegations charge that multiple gunmen played a role in an assassination plot. Multispectral analyses, adapted from studies of satellite imagery, show no evidence of an alleged rifle in the Zapruder film. Lastly, frame-averaging is used to reduce the noise in the Nix movie prior to MAP restoration. The restoration of the reduced-noise average frame more clearly shows that at least one of the alleged gunmen is only the light-and-shadow pattern beneath the trees.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Los Alamos Scientific Lab., NM (USA)
OSTI Identifier:
5632507
Report Number(s):
LA-UR-80-121; CONF-800310-1
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: ACSM-ASP convention, St Louis, MO, USA, 9 Mar 1980
Country of Publication:
United States
Language:
English
Subject:
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; PHOTOGRAPHY; IMAGE PROCESSING; DATA PROCESSING; PROCESSING; 990200* - Mathematics & Computers

Citation Formats

Breedlove, J.R., Cannon, T.M., Janney, D.H., Kruger, R.P., and Trussell, H.J. Restoration and analysis of amateur movies from the Kennedy assassination. United States: N. p., 1980. Web.
Breedlove, J.R., Cannon, T.M., Janney, D.H., Kruger, R.P., & Trussell, H.J. Restoration and analysis of amateur movies from the Kennedy assassination. United States.
Breedlove, J.R., Cannon, T.M., Janney, D.H., Kruger, R.P., and Trussell, H.J. Tue . "Restoration and analysis of amateur movies from the Kennedy assassination". United States. https://www.osti.gov/servlets/purl/5632507.
@article{osti_5632507,
title = {Restoration and analysis of amateur movies from the Kennedy assassination},
author = {Breedlove, J.R. and Cannon, T.M. and Janney, D.H. and Kruger, R.P. and Trussell, H.J.},
abstractNote = {Much of the evidence concerning the assassination of President Kennedy comes from amateur movies of the presidential motorcade. Two of the most revealing movies are those taken by the photographers Zapruder and Nix. Approximately 180 frames of the Zapruder film clearly show the general relation of persons in the presidential limousine. Many of the frames of interest were blurred by focus problems or by linear motion. The method of cepstral analysis was used to quantitatively measure the blur, followed by maximum a posteriori (MAP) restoration. Descriptions of these methods, complete with before-and-after examples from selected frames are given. The frames were then available for studies of facial expressions, hand motions, etc. Numerous allegations charge that multiple gunmen played a role in an assassination plot. Multispectral analyses, adapted from studies of satellite imagery, show no evidence of an alleged rifle in the Zapruder film. Lastly, frame-averaging is used to reduce the noise in the Nix movie prior to MAP restoration. The restoration of the reduced-noise average frame more clearly shows that at least one of the alleged gunmen is only the light-and-shadow pattern beneath the trees.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

Conference:
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