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§ 3 — Methodology Standards Handwriting Examination (002.0)

Methodology

A handwriting examination is carried out by assessing geometric

2 Geometric features refer to angles, lengths, distances and areas that can be measured from the shapes of the written ink trace. An example would be the ratio of the length of the ascender (stick) of a letter <b> to the corpus height of its belly. Geometric features are usually quantitative (See: geometry in mathematics).

and structural,

3 Structural features refer to unique shapes or patterns that are either present or absent, such as loops, crossings, hooks, ligatures, curls etc. (See: topology in mathematics). Structural features, if present, are helpful in reporting because they can be more easily verbalized and explained to non experts than is usually the case in quantitative geometric features.

visual features of the text, as well as detailed and measurable characteristics of the writing trace which are the result of the deposition process of the writing instrument, the force applied by the writing instrument (pen pressure) and the temporal order of the writing movements.

4 The analysis of ink-deposition features or the indentation pattern on the back of a document will usually require microscopy and/or special equipment such as an electrostatic detection apparatus (ESDA). An example of an ink-deposition feature is periodic striation in the ink trace caused by the rolling ball of a ballpoint pen, indicating aspects of writing direction and speed.

The features associated with the questioned sample are then compared with the features of the known writing. In general, the degree of similarity or dissimilarity of features may be seen as a measure of evidence for the hypothesis of common origin.

Regeling
Standards Handwriting Examination (002.0)
Soort
ZBO-regeling
Geldend vanaf
12-12-2016
BWB-id
BWBR0039080
Versie
2016-12-12_0

In de hele regeling · Officiële tekst op wetten.overheid.nl