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Proceedings Paper

Automated Computer Input Of Paperwritten ECG Records By Image Analysis
Author(s): S. Haenel
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Paper Abstract

Further development of automated ECG classification requires computer internal representation of well diagnosed ECG of clinical archives, but those ECG are mainly present as paper recorded charts. For chart digitization a high resolution TV camera, connected with digital computer and a soft-ware package for automated image pro-cessing, adapted to the special properties of paper recorded ECG signals is usable. An adapted image processing scheme consists of the following steps: After reconstruction of the lost zero voltage by local filtering of horizontal sections of ECG signal, convex contours of the traces are recognized by gradients. The recognition procedure ensures true acquisition of ECG signal also in the critical ranges of peaks. Full chart length is processed by several frames scanned in particular overlay and connected after curve extraction by a fast correlation method. The result of image processing is an internal representation of paperwritten ECG records, compatible with the electronical ECG recording format.

Paper Details

Date Published: 1 November 1982
PDF: 12 pages
Proc. SPIE 0375, Medical Imaging and Image Interpretation, (1 November 1982); doi: 10.1117/12.934639
Show Author Affiliations
S. Haenel, Department of Signalprocessing and Computer Technology Institute for Medical Informatics and Health (Germany)

Published in SPIE Proceedings Vol. 0375:
Medical Imaging and Image Interpretation
Judith M. S. Prewitt, Editor(s)

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