UM
Improving texture analysis performance in biometrics by adjusting image sharpness
Zhang, Kunai; Huang, Da; Zhang, Bob; Zhang, David
2017-06
Source PublicationPATTERN RECOGNITION
ISSN0031-3203
Volume66Pages:16-25
AbstractIn this paper, a method to improve texture analysis performance in biometrics by adjusting image sharpness is presented. Images of high sharpness are usually considered as high quality data in texture analysis. Therefore, the imaging sensor and lens are carefully selected and calibrated in an image acquisition system in order to capture clear images. However, the results of our experiments show that the performance of texture analysis in biometrics can be improved by filtering clear images to lower sharpness. The experiments were conducted on the PolyU Palmprint Database using two algorithms (CompCode and POC), as well as on the CASIA Iris Database using IrisCode. In this paper, a filtering method using Gaussian filters is adopted to the images during the pre-processing stage to adjust the image sharpness. Results indicate that there is an optimal range of image sharpness and if all the images are filtered to this range, the performance of texture analysis on the whole dataset will be optimized. A scheme is also proposed to find the optimal range and to filter an image to the optimal range.
KeywordImage sharpness Image filtering Texture analysis Palmprint recognition Iris recognition
DOI10.1016/j.patcog.2016.11.025
URLView the original
Indexed BySCI
Language英语
WOS Research AreaComputer Science ; Engineering
WOS SubjectComputer Science, Artificial Intelligence ; Engineering, Electrical & Electronic
WOS IDWOS:000397371800003
PublisherELSEVIER SCI LTD
The Source to ArticleWOS
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Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Recommended Citation
GB/T 7714
Zhang, Kunai,Huang, Da,Zhang, Bob,et al. Improving texture analysis performance in biometrics by adjusting image sharpness[J]. PATTERN RECOGNITION,2017,66:16-25.
APA Zhang, Kunai,Huang, Da,Zhang, Bob,&Zhang, David.(2017).Improving texture analysis performance in biometrics by adjusting image sharpness.PATTERN RECOGNITION,66,16-25.
MLA Zhang, Kunai,et al."Improving texture analysis performance in biometrics by adjusting image sharpness".PATTERN RECOGNITION 66(2017):16-25.
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