A Score-Based Indexing and Retrieval Technique for Biometric Databases

作者：Kavati Ilaiah^*; Prasad Munaga V N K; Bhagvati Chakravarthy

来源：International Journal of Pattern Recognition and Artificial Intelligence, 2017, 31(6): 1756009.

DOI：10.1142/S0218001417560092

• Indexing
• representative image
• match score
• vote score
• palmprint
• hand vein

This paper proposes a score-based indexing technique for biometric databases. A fixed-length index is computed for each image in the database by calculating its match scores against a preselected set of representative images. Further, an efficient storage mechanism (i.e. index space) is developed to arrange the biometric images like traditional database records so that a rapid search is possible. During identification, the retrieval technique finds a list of similar candidates for the query image from the database using voting scheme. Finally, to identify the genuine match from the retrieved similar candidates, we perform a one-one match between the query and each similar candidate using modi fined Hausdorff distance measure. Experimental results on different databases show a significant performance improvement in terms of response time and identification accuracy compared to the existing indexing methods.

• 出版日期2017-6