CINXE.COM

<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="390"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "publications.waset.org",cType: 'managed',cRay: '91c6aad08a135fc7',cH: 'DRU6nWim5QD3LmDnMxTyqT1ibKsaLmHLMS0cdh6R4yY-1741314588-1.2.1.1-WmCzzPlCCm1zCjwaSOnTPShqvVEhKiN_tHW_Q4dWE5uQzNAmhBlmtYGB738oW.iD',cUPMDTk: "\/abstracts\/search?q=facial%20expression%20identification&__cf_chl_tk=QI_kb__nTR3aSnNIqR7XPDxaOaj3Wid1CqvKVjPwXUY-1741314588-1.0.1.1-apUEA6Qb68RYKjyW9BI2PuAKWtsJchWxc9YZDFwwbhQ",cFPWv: 'g',cITimeS: '1741314588',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=facial%20expression%20identification&__cf_chl_f_tk=QI_kb__nTR3aSnNIqR7XPDxaOaj3Wid1CqvKVjPwXUY-1741314588-1.0.1.1-apUEA6Qb68RYKjyW9BI2PuAKWtsJchWxc9YZDFwwbhQ",md: "K2LJjEeHDZEkGLcKVnEkafjXazd.ciVaLktksDypDUE-1741314588-1.2.1.1-ddieHNdroxahJV_p2rLmPFd1PZqNhePLsTRZYQ8Ky.DdjYtvQaVPYfXBheKJftkX_FQOneL4D4G6o2mryKiFTRgngZSwqsAgpjJ.zDWzBIR9qOYn9gefChJPt2SapsybtE94cIrW_CkZ1dYWNekk7NdEfHj3A9NUFq2Qj5Y4ZyfHgHm7s18uJTZRghWzDIDuW4ccldKSYQH7YF3uxwUn.15__M77u9RJxxvwZ_p0FePQNYt77QRJ2eogEbyv5hI1JFYGrmpDoe3lT1KGdVfBNqEWDSI893L2hrC4yUE.z2DBzOLOHJIDautJAzxaoRid2joMfQoC9Tjz_7jH6E53zms0LSzhH0p3L6bMAI8bPy1Bimf.lNMqz1s_pEV8frq2B9M05rzFNHckFnGj3cARC9kJ7Mkx16VR3ZJAVPen4c56pW3LzAFCxPfYNon_41_PpJnyo6B1cWpZ9WxJmqpGSdEg4hEHu7zM3.oeBnsxwsCL1jc0B.Cu3BfqAUVNDHCk.dCtwsEQ3Q4Hklq16c.2.vGW3gkFOdj1zQG4WQvoxwxp2_PNpBJWpsIXkcxsQUcikbNL3M6YCyjT9Cl6YfLHLLpKuK3ovQH3ak68etlSm2xr8kpnvbNEDbaNibEM2hmDIfAgurg33__XgUV9sVnh_B64vucRcFbc40.brCLwsX4UgLJin1FkNxClRIflIH2zhomhhSbnqUiC7BLT83WHb5gEBXOphnbC2DyLTP7wp91LZo3VaSnxLsJx7rv6CrJsvoxx.JmPVp.8z2sAIwwWStuden9sdZfZ.UW0EEGAwvzNDuWBc9joqgIrGQpOgkrNl3rXrPVtTj4aasgIlHUFaavPXir3jgUW1_at8dhbshbHsN1ppDw0hSDfguKMN4gL5SRF5_ptSV80VbyNCY_1ToKXI.v1l2UlT0L.CIZ4Lycn2IMrinhOjTjjVUmBMn9yzl2GObxLEo2kTYpNZNAoPu_gdXSg4k8hYxa7e3t6wwMSc05wGpJvGnsd0eDF2OWPKuYph1YlqPnLvtxwz0OsdFr1NrzzTuRjH1qFcj433Mg1j6ZUn36b41SI64Jspy1eHz57H1YyVl2siC0XgsHRqnNndo0YJCI1JeautKUVCRs.ZdQ9Fk.o0E5fTWkpe3v_frTvF17V8I5rDVaL56MvjE_xvpBN03TZBfOMTc_Y0zV5ahctBZPar6W9ZqhdjiSD6JNLzELsp0reVxybRQ.YcCOLLiZxC2i9tY7UVStXScgmIKmgHx6qKu37bbEJApjxBfZThg4m5TTTWPIeAdD9f9QPJon4V2vTgBStm2XwPoNOUJxpIaULyekzs0j9siIieYzK0eCv9LqoRGjicofbnw",mdrd: "F2atyYxtB8vk_b5ctEm4pzIkASDsBMh2p1p.TyjF54k-1741314588-1.2.1.1-09ZQHYISVdjj1B8MCrnIMtdQ12D7LqdneQjjuP8s.ZMiX3OgDUb8Z5alLIFYt5B21A40MZ0Xcgv9Q6bNza0k2embP7XHaU7_uVEtgY4KQw9dIFvAIgKoCI9K3MEEDxHsfK4mxFnd2_NNamgcrH_iEKg5XYc_TTkoPXzv1wwCsEC6AxvBjiYscLeXNYP4r9lot99I5PRisiY3QX4GJb1DPQIVVans2GD_IFodLDcUI4qQxecmxR0NlK9bCzv.fEOfQce6.dboKMfh0Pk58sYwLc6shRaHYS15jYkM5GrsufMQKdN3.8MDAE.yXoitvRhlSTQEAKIZME9Z5nNb_leu7T76m1T6kKlfTAyQWJJxiMUHbYJ6qaIKKOA1tqdbpACtdM4j8euHQ5_0FoIf3PpFtCJ7TAviwIcHuzxRgZJ8Ph19E7htC21cjMK_hayDHFDOJfPwyG1xcMH3zXMc7HNZhmu3Mn4nUXtqa92HcIzKuMLFNczojkTXxCw7byT19OW4_LbCjejfImSc_8O_HlTTvfgUzqa2UmAT4hWVmoE_L1Y7TH8EjLduM._T1nBnpw4QPaQlB72eYHU5woFEiXZTaehzul4_NKLaf0uhLgG47yia3yUezvo8cus5fyJRbcZifiNVEq5x.ri4_XmNzDu269nxpoB5oYZxEGhItE.qqE756ECNZf9.NssfunALZpqFKxPPypUpEByRZbvCdxrbiRhm9PrrEWYclLGv_L5Jg9D_Y6vDY0qtVZ3UFxlWbp4AEO83s.cMsp6Q6qjJEeiLxkvBR5_aW7T7sZ1yJYScZRgPJ2J7f16bY23vhNgCA5xduu2kYWuIU6Z1DSr_sx0P38pgZ8..wUd_A8s.eN2.iRdOysH9ChXOfJmMstgE5UFwQKkGE2SURXbgEXINU8VdHE719ytEO5JYfP1tKVnpW.V7fWJWk5jmnp9j3a9IeG80E7UuaFzLCwqOY9TkGj5yB6plwJnwmqNen6yrUqUbodhG3T_jC3HABD_cJKoy4DDtahbdI0QZb_7yHcfyWvBi6ixGdUntHp49VOLypjdVlc91myza5XYenBdJO284yhCCXiNfXEx0x03UefmwvIF.U_V5okB8eSIjzUkQPSR.UEqSOtmcrp3xHPBJ92_oO4jtK5mSyJyxt9VJtxSzhBt1J7Pdf.2cIs3z39wKdQ2VySxx3Oo2gJVI0zay9VcDntGwcbHiYvffZkDmaJCw2MDAHgb9OU2DmjTIbBBDR6eHXOoZHfe9lfTBbxTh5oD7U6Pf63Zd3vQXskmrQ.5oE5fNaSFFlTkOUpZ2zLhgJkG81y8P4_loZSs36zegi2sQzYefG6VBDB4KAakQjcnm5_K5R8Ohyu.FEMo2Ub4HmtCA3tPA8lCTzv6K8wX5zYHYghurl2_cFxhXZmnz2G.1JA1SJU0kMLaVsmq9CkPhvAmm8NBLyF5L3yFpvaHM.lUhgoq1tcbwyGzBhAizxIyNLMHuSfVRonzY2p7tZfnCrPuAwELgaiwrdXfKsWppw24dXutGy_J6E3U3Xq5RebWTmd7eOyYydyiNs7PRWRPKb1J3M2jW7aZNNzbTsVV3ZweLRcOO5RIOfBR_5w_mFTOCTugML.Zzc4.ugJ0aCbnWoKF_bHtUOIHihZdXQntHaLwl8gTg1IKMGHxuCYGFg_MbjnXqpcsesBLjDdtK03Tv_BUt1fxA09.aFIzwnQ3QRSAwuUFNOHCP2w2IIlXD0HQtekBsEZ9gqgx.DWTasmYFpQW1lyomhHqRiUH0CsZm3b5CdDFbB6BgO7H5J9HBW3EBVUrNKl6YVqraQSGOa3s1DzIP2.SnHgcambpfQtvgt6n8qa62aOhNI_8nyUlysNyYDrwjQe.uMu57lQe1YBG3nzoBcakpdE85DRoOUcyw0YeddHmfsGxr1Mom6rpyakbTIvpTqMYwJWqb9lEbsGP2AnG2NLlGFqpqis6Zqt971QRYNcpu"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=91c6aad08a135fc7';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/abstracts\/search?q=facial%20expression%20identification&__cf_chl_rt_tk=QI_kb__nTR3aSnNIqR7XPDxaOaj3Wid1CqvKVjPwXUY-1741314588-1.0.1.1-apUEA6Qb68RYKjyW9BI2PuAKWtsJchWxc9YZDFwwbhQ" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>