Claims
- 1. A method of producing a reference image for pattern recognition tasks, which comprises the following method steps:recording a plurality of at least partially overlapping images of a pattern to be recognized; producing a symbolic intermediate representation for each of the images by digitizing and establishing probable lines or shapes; comparing the symbolic intermediate representations of two images with one another, and determining a relative shift and rotation of the images with respect to one another; transforming the two intermediate representations to coincide in an overlapping area and determining a quality of a match; if the quality of the match is adequate, synthesizing the two intermediate representations to form an overall image; comparing the overall image with a respective further intermediate representation and producing from this a further overall image, until an overall image is obtained which comprises all the intermediate representations with a useable matching level, and which is used as a reference image.
- 2. The method according to claim 1, wherein the pattern to be recognized is a fingerprint.
- 3. The method according to claim 1, which comprises at least partially producing the reference image concurrently with recording the pattern to be recognized.
Priority Claims (1)
Number |
Date |
Country |
Kind |
782/98 |
May 1998 |
AT |
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CROSS-REFERENCE TO RELATED APPLICATION
This is a continuation of copending international application PCT/DE99/01303, filed May 3, 1999, which designated the United States.
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Continuations (1)
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Number |
Date |
Country |
Parent |
PCT/DE99/01303 |
May 1999 |
US |
Child |
09/708296 |
|
US |