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In this work, a novel adaptive histogram equalization (AHE) variant is proposed referred as effective area-AHE (EA-AHE) with weights. Here, global adaptive histogram equalization is improved using a local AHE technique by varying the effective area with different effective weights. The method is found to improve the biometric authentication identification rate as compared to the typical AHE. To validate the proposed algorithm, IITD palmprint databases of left and right hand are used in the simulations. Finally, it is validated through results that proposed technique is superior to the existing ones.<\/jats:p>","DOI":"10.3233\/jifs-169232","type":"journal-article","created":{"date-parts":[[2017,3,31]],"date-time":"2017-03-31T18:21:37Z","timestamp":1490984497000},"page":"2893-2899","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":3,"title":["Biometric authentication using local subspace adaptive histogram equalization"],"prefix":"10.1177","volume":"32","author":[{"family":"Gopal","sequence":"first","affiliation":[{"name":"Netaji Subhas Institute of Technology, Delhi University, Delhi, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shefali","family":"Srivastava","sequence":"additional","affiliation":[{"name":"Netaji Subhas Institute of Technology, Delhi University, Delhi, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Smriti","family":"Srivastava","sequence":"additional","affiliation":[{"name":"Netaji Subhas Institute of Technology, Delhi University, Delhi, India"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2017,3,29]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvcir.2016.04.019"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0734-189X(87)80186-X"},{"key":"e_1_3_2_4_2","first-page":"321","volume-title":"Multi\u2013level fusion of palmprint and dorsal hand vein","author":"Chaudhary G.","year":"2016","unstructured":"ChaudharyG., SrivastavaS. and BhardwajS., Multi\u2013level fusion of palmprint and dorsal hand vein, In Information Systems Design and Intelligent Applications, Springer, (2016), 321\u2013330."},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.5391\/IJFIS.2015.15.1.35"},{"key":"e_1_3_2_6_2","first-page":"1","article-title":"In Computer, Communication and Control (IC4), 2015 International Conference on, IEEE","author":"Kalra M.","year":"2015","unstructured":"KalraM. and KumarS., Various image enhancement techniques for skin cancer detection using mobile app, In Computer, Communication and Control (IC4), 2015 International Conference on, IEEE, 2015, 1\u20136.","journal-title":"Various image enhancement techniques for skin cancer detection using mobile app"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijleo.2015.08.150"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijleo.2015.07.069"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.5120\/20017-2027"},{"key":"e_1_3_2_10_2","first-page":"175","article-title":"Industrial Instrumentation and Control (ICIC), International Conference on, IEEE","author":"Gautam C.","year":"2015","unstructured":"GautamC. and TiwariN., Efficient color image contrast enhancement using range limited bi-histogram equalization with adaptive gamma correction, In Industrial Instrumentation and Control (ICIC), International Conference on, IEEE, 2015, 175\u2013180.","journal-title":"Efficient color image contrast enhancement using range limited bi-histogram equalization with adaptive gamma correction"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.1007\/s40846-015-0078-8"},{"key":"e_1_3_2_12_2","doi-asserted-by":"publisher","DOI":"10.14257\/ijsip.2015.8.2.29"},{"key":"e_1_3_2_13_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.patcog.2004.04.010"},{"key":"e_1_3_2_14_2","doi-asserted-by":"publisher","DOI":"10.1109\/TCE.2007.381734"},{"key":"e_1_3_2_15_2","doi-asserted-by":"publisher","DOI":"10.1109\/30.754419"},{"key":"e_1_3_2_16_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.asoc.2016.01.039"},{"issue":"1","key":"e_1_3_2_17_2","first-page":"35","article-title":"Realization of the contrast limited adaptive histogram equalization (clahe) for real-time image enhancement, J of VLSI signal processing systems for signal","volume":"38","author":"Reza A.M.","year":"2004","unstructured":"RezaA.M., Realization of the contrast limited adaptive histogram equalization (clahe) for real-time image enhancement, J of VLSI signal processing systems for signal, Image and Video Technology38(1) (2004), 35\u201344.","journal-title":"Image and Video Technology"},{"key":"e_1_3_2_18_2","doi-asserted-by":"publisher","DOI":"10.1109\/83.841534"},{"key":"e_1_3_2_19_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.asoc.2016.05.039"}],"container-title":["Journal of Intelligent &amp; 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