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In this paper, a memory-efficient Subsampled Lucas-Kanade Optical Flow (SLKOF) is proposed. The proposal employs the Subsampling of images for various levels. The proposal deals with the computation of OKN gain for different image Subsampling factors using the MATLAB platform. The experimental set up to observe OKN is done using computer-based rotation control of the drum through a stepper motor. The results are compared with the well established Lucas-Kanade (LK) method for Optical flow. It is observed that OKN gain corresponds to 1\/4th of a subsampled image of the SLKOF method correlates with the LK method for the majority of the cases. This validation evidently elucidates that the proposal is computationally efficient.<\/jats:p>","DOI":"10.3233\/jifs-189849","type":"journal-article","created":{"date-parts":[[2021,3,30]],"date-time":"2021-03-30T14:36:47Z","timestamp":1617115007000},"page":"5265-5274","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":4,"title":["SLKOF: Subsampled Lucas-Kanade Optical Flow for Opto Kinetic Nystagmus detection"],"prefix":"10.1177","volume":"41","author":[{"given":"C.","family":"Jaiseeli","sequence":"first","affiliation":[{"name":"Department of Electronics and Communication Engineering, School of Electrical and Electronics Engineering, SASTRA Deemed to be University, Tirumalaisamudram, Thanjavur, Tamil Nadu, India"}]},{"given":"N.R.","family":"Raajan","sequence":"additional","affiliation":[{"name":"Department of Electronics and Communication Engineering, School of Electrical and Electronics Engineering, SASTRA Deemed to be University, Tirumalaisamudram, Thanjavur, Tamil Nadu, India"}]}],"member":"179","published-online":{"date-parts":[[2021,3,27]]},"reference":[{"key":"e_1_3_1_2_2","doi-asserted-by":"publisher","DOI":"10.1097\/00004397-198002010-00011"},{"key":"e_1_3_1_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0896-1549(03)00013-0"},{"issue":"2","key":"e_1_3_1_4_2","first-page":"752","article-title":"In Bum Lee, Jin Hak Lee and Jeong-Min Hwang, Clinical and EpidemiologicResearch: Objective Measurement of Distance Visual Acuity Determined by Computerized Optokinetic Nystagmus Test","volume":"51","author":"Hyon Joon Young","year":"2010","unstructured":"HyonJoon Young, YeoHwan Eok and SeoJong-Mo, In Bum Lee, Jin Hak Lee and Jeong-Min Hwang, Clinical and EpidemiologicResearch: Objective Measurement of Distance Visual Acuity Determined by Computerized Optokinetic Nystagmus Test, February51(2) (2010), 752\u2013757.","journal-title":"February"},{"key":"e_1_3_1_5_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00417-011-1705-x"},{"key":"e_1_3_1_6_2","doi-asserted-by":"publisher","DOI":"10.1038\/sj.eye.6702529"},{"key":"e_1_3_1_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.visres.2010.08.037"},{"key":"e_1_3_1_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.visres.2006.10.022"},{"key":"e_1_3_1_9_2","doi-asserted-by":"crossref","unstructured":"KhanS.G. 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