Digital Enhancement Of The Hibernia Bank Robbery Film

Francis Corbett; Steven Lerman

doi:10.1117/12.955488

20 September 1977 Digital Enhancement Of The Hibernia Bank Robbery Film

Francis Corbett, Steven Lerman

Proceedings Volume 0108, Optics in Security and Law Enforcement I; (1977) https://doi.org/10.1117/12.955488
Event: 1977 SPIE/SPSE Technical Symposium East, 1977, Reston, United States

Abstract

In February 1976, Itek was requested by the office of Attorney F. Lee Bailey to perform image analysis on photographs of a robbery at the Hibernia Bank in California. The desired objective in pursuing the analysis was to make the facial features of Mr. Bailey's client, who is shown in the bank film of the robbery, clearer and indisputable. This was desired in order to better judge what type of facial expression Mr. Bailey's client evidenced (e.g., either a smile or a grimace-like appearance) during her reaction to a shooting that happened during the bank robbery. We performed a digital, grain suppression, Fourier transform filtering operation on the subject's facial features, which suppressed the grainy appearance of the imagery but left the facial features virtually intact. The final product of this study was several pairs of before and after filtering comparisons of the facial features. The grain was effectively removed, and the expression made more identifiable. However, judgment by the observer was still required to determine the nature of the expression in some frames.

Citation Download Citation

Francis Corbett and Steven Lerman "Digital Enhancement Of The Hibernia Bank Robbery Film", Proc. SPIE 0108, Optics in Security and Law Enforcement I, (20 September 1977); https://doi.org/10.1117/12.955488

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