Showing papers by "German Criminal Police Office published in 1981"
TL;DR: The objective of this paper is the automatic identification of individual persons by means of their handwriting images, digitized by a computer-controlled TV-camera, which provides features representing global statistical information about the image.
45 citations
TL;DR: In this article, computer-aided studies of the degree of similarity of striated marks are described, and the results of the model calculations are presented and the properties of the models discussed.
Abstract: Computer-aided studies of the degree of similarity of striated marks are described. Digitized image data on 40 grinding marks were fed into a minicomputer, and the position values of the lines were determined semiautomatically. Idealized models were defined for an objective comparison of striated marks and then applied to the grinding mark data. Necessary conditions of the models were tested by comparing them with actual, measured properties of the marks. Results of the model calculations are presented and the properties of the models discussed.
18 citations
01 Jan 1981
TL;DR: The application of image processing and pattern recognition techniques to support the comparative handwriting analysis is reported and the dominating problem proved to be the selection and formulation of suited task-oriented features.
Abstract: The application of image processing and pattern recognition techniques to support the comparative handwriting analysis is reported. The dominating problem proved to be the selection and formulation of suited task-oriented features. Adequate solutions have been obtained by heuristic approaches, they have to be verified statistically on large test data sets.
8 citations
06 Oct 1981
TL;DR: Die Betrachtung des Handschriftenbildes als regionale Textur fuhrt zu sehr effizienten Ansatzen der Extraktion textinsensitiver Schreiber-spezifischer Merkmale.
Abstract: Die Betrachtung des Handschriftenbildes als regionale Textur fuhrt zu sehr effizienten Ansatzen der Extraktion textinsensitiver Schreiber-spezifischer Merkmale Die verwendeten Klassifikatoren sind fur Massenprobleme in der forensischen Applikation den besonderen Rahmenbedingungen der Aufgabenstellung angepast Es werden Ergebnisse an einem groseren Testkollektiv berichtet
2 citations