Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Harald Penz"'
Publikováno v:
IWBF
Today’s smart-phone cameras enable touch-less biometric fingerprint capture for practical use. This is inexpensive, comfortable and now fast enough for practical use. This paper deals with the question of how reliably two fingerprints can be compar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6c9c69213673e807de8cf8403d661a1
https://doi.org/10.1109/iwbf.2019.8739191
https://doi.org/10.1109/iwbf.2019.8739191
Publikováno v:
Journal of Visual Communication and Image Representation. 20:389-398
Most color image sensors use color filter arrays (CFA). With this sensor design the captured information at each sensor pixel position is restricted to a specific spectral portion (typically red, green and blue bands). To obtain the missing color res
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::835e3062a162948891e8cccaa2c57943
https://doi.org/10.1016/j.jvcir.2009.04.003
https://doi.org/10.1016/j.jvcir.2009.04.003
Autor:
Harald Penz, Andreas Vrabl, Dorothea Heiss-Czedik, Konrad Mayer, Herbert Ramoser, Reinhold Huber-Mörk
Publikováno v:
Pattern Recognition Letters. 28:2037-2045
For quality inspection of security printing systems it is necessary to measure the displacement between printing processes. We present a new approach for region based matching of color images. Maximally stable extremal regions are extracted from imag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7bd8c85fb7c0f0183ebe3e11d55dc51
https://doi.org/10.1016/j.patrec.2007.06.008
https://doi.org/10.1016/j.patrec.2007.06.008
Publikováno v:
Integrated Imaging and Vision Techniques for Industrial Inspection ISBN: 9781447167402
We describe a fast nonparametric 2D image registration approach called FlexWarp. FlexWarp is designed for automated visual inspection. FlexWarp is discussed in detail, especially the algorithms for assessment and automatic selection of control points
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e2ba92e0b093371be897bbc656aa904
https://doi.org/10.1007/978-1-4471-6741-9_4
https://doi.org/10.1007/978-1-4471-6741-9_4
Publikováno v:
Computers in Industry. 56:958-974
Postal stamps with print defects are valuable collectables for philatelists. However, stamp printers strive to emit exclusively defect-free stamps. In order to achieve high quality of the production process, each sheet is inspected by especially trai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a51789c1d57dbf1a8f81258764587072
https://doi.org/10.1016/j.compind.2005.05.019
https://doi.org/10.1016/j.compind.2005.05.019
Publikováno v:
Pattern Recognition Letters. 26:61-75
We present a vision-based approach to coin classification which is able to discriminate between hundreds of different coin classes. The approach described is a multistage procedure. In the first stage a translationally and rotationally invariant desc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc50fc5d93e384df75f8853ddba07796
https://doi.org/10.1016/j.patrec.2004.09.006
https://doi.org/10.1016/j.patrec.2004.09.006
Publikováno v:
IFAC Proceedings Volumes. 37:507-512
For the exact sorting of more than 1000 different categories of coins with almost 100 percent of recognition it was necessary to develop a unique high-speed coin sorting machine called “Dagobert” by ARC Seibersdorf research GmbH. Based on optical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5daa7b9b5747e27d4dcda0af33a4befa
https://doi.org/10.1016/s1474-6670(17)31155-2
https://doi.org/10.1016/s1474-6670(17)31155-2
Autor:
Michael Rubik, Johannes Fuertler, Harald Penz, Konrad Mayer, Herbert Nachtnebel, Joerg Brodersen, Christian Eckel, Gemeiner Christian
Publikováno v:
Real-Time Image Processing
For industrial print flaw detection images are acquired and then compared to a specimen (master image). Due to the production process, the images are not exactly aligned to each other. Therefore, preceding a pixel-by-pixel comparison, the acquired im
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0080875f061eb7ee4002ad8b8e3ed9c
https://doi.org/10.1117/12.766571
https://doi.org/10.1117/12.766571
Autor:
Harald Penz, Konrad Mayer, Johannes Fürtler, Christian Eckel, Ernst Bodenstorfer, Klaus Gravogl, Herbert Nachtnebel, Jörg Brodersen, Dorothea Heiss
Publikováno v:
SPIE Proceedings.
Today, printing products which must meet highest quality standards, e.g., banknotes, stamps, or vouchers, are automatically checked by optical inspection systems. Typically, the examination of fine details of the print or security features demands im
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b93ee0cc41ffc3db4afd0e3489bf9a09
https://doi.org/10.1117/12.704542
https://doi.org/10.1117/12.704542
Publikováno v:
Computer Analysis of Images and Patterns ISBN: 9783540742715
CAIP
CAIP
For quality inspection of printing systems it is necessary to measure the displacement between printing processes. Tie points are employed in correspondence and displacement estimation between individual print elements. We compare interest point and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::391eab4fc1cfac0ff95cbca87d1c2a17
https://doi.org/10.1007/978-3-540-74272-2_64
https://doi.org/10.1007/978-3-540-74272-2_64