<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office"><head><!--[if gte mso 9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]--></head><body><div class="yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><div><div dir="ltr" data-setdir="false"><div dir="ltr" style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;">🚀 <b>Challenge</b>: <i>Exploring Dense Optical Flow for Gait Recognition</i></div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;">🔍 We are excited to announce the first Optical Flow Challenge, which will take place during the upcoming IJCB2025 and focuses on advancing biometric technologies through innovative optical flow methods.</div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;"><br></div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;">🎯 <b>Challenge Objective</b>:</div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;">Develop state-of-the-art optical flow estimation techniques applied to gait recognition, using the new, comprehensive OUMVLP-OF dataset.</div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;"><br></div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;">📊 <b>Challenge Tracks</b>:</div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;">🏃 Track 1: Gait Identification – recognizing individuals based on their unique walking patterns.</div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;">🔐 Track 2: Gait Verification – confirming identity by analyzing and matching gait sequences.</div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;"><br></div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;">📅 <b>Important Dates</b></div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;">📌 Launch: March 5, 2025</div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;">📝 Registration deadline: March 30, 2025</div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;">⏳ Submission deadline: May 30, 2025</div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;">🏅 Results announcement: June 10, 2025</div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;"><br></div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;">🌍 <b>Why participate?</b></div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;">🤝 Collaborate with international researchers and industry experts.</div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;">💡 Showcase your research and gain recognition in the biometrics community.</div><div style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;">🌱 Contribute directly to advancements in biometric technology and innovation.</div><div dir="ltr" style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;" data-setdir="false">👉 Register now and learn more: <a href="https://of.iapr-tc4.org/" class="ydpecc8f5b4yiv2686207463ydp9aeb5af5enhancr_card_3649353584" style="color: rgb(25, 106, 212); text-decoration-line: underline;" rel="nofollow" target="_blank">Challenge on the OUMVLP-OF Gait Dataset – Exploring Dense Optical Flow for Gait Recognition</a> (<a href="https://of.iapr-tc4.org/" rel="nofollow" target="_blank">https://of.iapr-tc4.org/</a>)</div><div><br></div><div id="ydpa43b83caenhancr_card_3669450318" class="ydpa43b83cayahoo-link-enhancr-card ydpa43b83caymail-preserve-class ydpa43b83caymail-preserve-style" style="max-width:400px;font-family:"YahooSans VF", YahooSans, "OpenSans VF", OpenSans, "Helvetica Neue", "Segoe UI", Helvetica, Arial, sans-serif" data-url="https://of.iapr-tc4.org/" data-type="YENHANCER" data-size="MEDIUM" contenteditable="false"><a href="https://of.iapr-tc4.org/" style="text-decoration:none !important;color:#000 !important" class="ydpa43b83cayahoo-enhancr-cardlink" rel="nofollow" target="_blank"><table border="0" class="ydpa43b83cacard-wrapper ydpa43b83cayahoo-ignore-table" cellpadding="0" cellspacing="0" style="max-width:400px"><tbody><tr><td width="400"><table border="0" class="ydpa43b83cacard ydpa43b83cayahoo-ignore-table" cellpadding="0" cellspacing="0" width="100%" style="max-width:400px;border-width:1px;border-style:solid;border-color:rgb(224, 228, 233);border-radius:2px"><tbody><tr><td class="ydpa43b83cacard-primary-image-cell" background="https://s.yimg.com/lo/api/res/1.2/TnpIXG0w_pmXdnN5BCHShA--~A/Zmk9ZmlsbDt3PTQwMDtoPTIwMDthcHBpZD1pZXh0cmFjdA--/https://of.iapr-tc4.org/wp-content/uploads/sites/12/2025/02/key-fig.png.cf.jpg" bgcolor="#000000" valign="top" height="175" style="background-color: rgb(0, 0, 0); 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