NDLI: A real-time embedded solution for skew correction in banknote analysis

Content Provider	IEEE Xplore Digital Library
Author	Rashid, A. Prati, A. Cucchiara, R.
Copyright Year	2011
Description	Author affiliation: DiSMI - University of Modena and Reggio Emilia - Via Amendola, 2 - Reggio Emilia, Italy (Prati, A.) \|\| DII - University of Modena and Reggio Emilia - Via Vignolese, 905 - Modena, Italy (Rashid, A.; Cucchiara, R.)
Abstract	Several industrial applications do require embedded solutions both for compacting the hardware occupation and reducing energy consumption, and for achieving high speed performance. This paper presents a computer vision system developed for correcting image skew in applications for banknote analysis and classification. The system must be very efficient and run on a fixed-point DSP with limited computational resources. Consequently, we propose three innovative improvements to basic and general-purpose image processing techniques that can be helpful in other computer vision applications on embedded devices. In particular, we address: a) an efficient labeling with an union-find approach for hole filling, b) a fast Hough transform implementation, and c) a very high-speed estimation of affine transformation for skew correction. The reported results demonstrate both the accuracy and the efficiency of the system, also in presence of severe skew. In terms of efficiency, the computational time is reduced of about two orders of magnitude.
Starting Page	42
Ending Page	49
File Size	2039555
Page Count	8
File Format	PDF
ISBN	9781457705298
ISSN	21607516
e-ISBN	9781457705304
DOI	10.1109/CVPRW.2011.5981806
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Real time systems Image segmentation Visualization Estimation Transforms Digital signal processing Optimization
Content Type	Text
Resource Type	Article

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