Sökning: "fingerprint recognition"
Visar resultat 1 - 5 av 10 avhandlingar innehållade orden fingerprint recognition.
1. Improving fingerprint biometrics by local symmetry and fusion
Sammanfattning : Fingerprint recognition and biometrics in general have been significantly gaining attention within the last years, not least due to the biometric passport that has been introduced all over Europe and the American immigration management system US-VISIT. The tasks of fingerprint recognition can be broken down to smaller entities, i.e. LÄS MER
2. Wood fingerprint recognition and detection of thin cracks
Sammanfattning : The first part of this thesis deals with recognition of wood fingerprints extracted from timber surfaces. It presents different methods to track sawn wood products through an industrial process using cameras. LÄS MER
3. Symmetry Filters Applied to Fingerprints : Representation, Feature extraction and Registration
Sammanfattning : A common framework for feature extraction in fingerprints is proposed by use of certain symmetries. The proposal includes representation, filters, and filtering techniques for common features including minutiae points, singular points and the ridge and valley patterns. LÄS MER
4. Tracing and apportioning sources of dioxins using multivariate pattern recognition techniques
Sammanfattning : High levels of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) in edible fish in the Baltic Sea have raised health concerns in the Baltic region and the rest of Europe. Thus, there are urgent needs to characterize sources in order to formulate effective mitigation strategies. LÄS MER
5. Computed Tomography and Fingerprint Traceability in the Wood Industry
Sammanfattning : The purpose of the work described in this thesis was to develop techniques based on non-invasive measurements of logs and sawn timber that would increase the profitability of the wood industry in general and sawmills in particular. The work has two main focus areas: computed tomography (CT) scanning of logs and traceability of wood products. LÄS MER