… such as the fingerprint and palm print, it is less likely to … the vertical knuckle lines is
obtained within local patches by a … Assuming the synthetic image is in gray scale with the pixel …

… Experimental results using CASIA multi-spectral palmprint … [16] is applied to extract hand
contours from grayscale palm vein … the values of the principal curvatures and principal directions …

… are a mixture of strong principal lines and some thin wrinkles, … Thus, Gray code representation
gives lower bit variation and … All feature vectors are stored in the database after extracting. …

… local feature based methods generally extracted the intrinsic features of palmprint such as
the principal lines … In the following experiments, we use the ROI segmentation method [8] to …

… The hand images in CASIA are gray scale and have cropped … [47] considered an approach
based on line detection after … , and as the lines in the palmprint correspond to black pixels, …

… In this paper, we propose the palmprint feature extraction method … palmprint images contain
features such as: principal lines (… In the following sections, we present in detail our proposed …

… Because most of the three principal lines are included in the ROI … In this paper, the maximum
inscribed circle algorithm is used … This result proves that the palmprint image is aligned after …

… Following this, the rank of matching scores of palm print and … out portions of palm print
containing prominent principal lines, creases, … changes than grayscale values. The proposed LOP …

… accurately for both the minor wrinkles and the principal lines. … space following the semantic
correlations of different models. … 2a, respectively, z-axis represents the gray value. It can be …

… [1] effectively extracted principal lines from the palmprint image … After the procedure of ROI
extraction, a total of 1,928 ROIs … Maenpaa, “Multiresolution gray-scale and rotation invariant …