Wyniki wyszukiwania - BazTech

Ograniczanie wyników

4 Journal of Medical Informatics & Technologies

Znaleziono wyników: 4

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: IPAN99

Sortuj według:

Ogranicz wyniki do:

The method for determining the characteristic points of signatures based on IPAN99 algorithm

Doroz R., Kostorz I.

Journal of Medical Informatics & Technologies

2010

Vol. 15

41-46

The paper puts forward a new method of determination of signatures' characteristic points. The method is based on seeking points of the highest curvature using the IPAN99 algorithm. The way of IPAN99 algorithm parameters' automatic selection for a particular signature has been fully described. Moreover, the way of determination of additional characteristic points, important for a signatures analysis, has been shown. The presented results of carried out experiments confirm that the proposed method is useful for signature recognition and verification.

New method for finding a reference point in fingerprint images with the use of the IPAN99 algorithm

Wróbel K., Doroz R.

Journal of Medical Informatics & Technologies

2009

Vol. 13

59--63

This study presents a new method for finding a reference point in fingerprint images. The proposed method is based on the IPAN99 algorithm, which detects high curvature points on a contour of a graphical object. This algorithm was adjusted in the study to detect high curvature points on friction ridges. It allows locating a reference point on a fingerprint image. Since the IPAN99 algorithm requires that the thickness of an analysed contour should be of one pixel, each fingerprint image was adequately prepared before submitting to the analysis with the IPAN99 algorithm. Evaluation of the efficiency of the method consisted in comparing the distances between coordinates of reference points determined with the use of the proposed method and indicated by an expert. The developed method was compared with other algorithms used for determining a reference point.

On some optimalization of signature recognition

Doroz R., Bargielski M.J.

Journal of Medical Informatics & Technologies

2008

Vol. 12

201--206

Signature recognition is one of the important problems nowadays. In paper we present known method of pattern (curves) recognition, i.e. algorithm IPAN99 and researches over its optimization; there are many control parameters which influence on recognition results. We present some quasi-optimal set of control parameter. Our next aim is to automatically find proper parameters. Thus some optimum seeking method for unimodale and multimodale function is proposed.

Signature characteristic points determination by means of the IPAN99 algorithm

Doroz R., Widuch S.

Journal of Medical Informatics & Technologies

2007

Vol. 11

105--113

The handwritten signature is often used for the identity confirmation. From the specialized graphic tablet, we receive the information in form of time strings. In this paper, the research results are presented which refer to the effect of applying the method of point detection of the highest curvature. Signatures are normalized by means of a DTW method, where two time strings representing the signature features are matched.