Learn More
SUMMARY This paper presents an algorithm for fingerprint matching using the Phase-Only Correlation (POC) function. One of the most difficult problems in human identification by fingerprints has been that the matching performance is significantly influenced by fingertip surface condition, which may vary depending on environmental or personal causes. This(More)
SUMMARY This paper presents a high-accuracy image registration technique using a Phase-Only Correlation (POC) function. Conventional techniques of phase-based image registration employ heuristic methods in estimating the location of the correlation peak, which corresponds to image displacement. This paper proposes a technique to improve registration(More)
This paper presents an efficient algorithm for iris recognition using phase-based image matching - an image matching technique using phase components in 2D discrete Fourier transforms (DFTs) of given images. Experimental evaluation using the CASIA iris image databases (versions 1.0 and 2.0) and Iris challenge evaluation (ICE) 2005 database clearly(More)
— In the present paper, we introduce high-performance hardware architectures for the 128-bit block cipher CLEFIA and evaluate their ASIC performances in comparison with the ISO/IEC 18033-3 standard block ciphers (AES, Camellia, SEED, CAST-128, MISTY1, and TDEA). We designed five types of hardware architectures for CLEFIA, combining two loop structures and(More)
This paper proposes a high-accuracy rotation estimation algorithm using 1D Phase-Only Correlation (POC). In general, the rotation angle between two images is estimated as follows: (i) convert the image rotation into the image shift by polar mappings of the amplitude spectra of images, and (ii) estimate the translational displacement between the polar(More)
BACKGROUND The Clinical Outcomes Committee of the Japanese Society for Surgery of the Foot (JSSF) has conducted the second Field Survey of the Outcome Instrument for the Foot and Ankle version 2. METHODS The survey of the Outcome Instrument version 2, which was composed of 43 items, was performed in 313 patients (154 men and 159 women) who had(More)
BACKGROUND The Clinical Outcomes Committee of the Japanese Society for Surgery of the Foot conducted a field survey using a novel foot and ankle outcome instrument. We report the development and evaluation of the Outcome Instrument version 1. MATERIALS AND METHODS A total of 108 potential questions were extracted from literature published in the interval(More)
A major approach for iris recognition today is to generate feature vectors corresponding to individual iris images and to perform iris matching based on some distance metrics. One of the difficult problems in feature-based iris recognition is that the matching performance is significantly influenced by many parameters in feature extraction process, which(More)