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A differential personalization approach using Siamese architectures learns relative gaze displacements and reconstructs absolute gaze from a small set of calibration frames. In this paper, we benchmark Siamese personalization on polarization-enabled eye tracking. For benchmarking, we use a 338-subject dataset captured with a polarization-sensitive camera and 850 nm illumination. We achieve performance comparable to linear calibration with 10-fold fewer samples. Using polarization inputs for Siamese personalization reduces gaze error by up to 12% compared to near-infrared (NIR)-based inputs. Combining Siamese personalization with linear calibration yields further improvements of up to 13% over a linearly calibrated baseline. These results establish Siamese personalization as a practical approach enabling accurate eye tracking.<\/jats:p>","DOI":"10.1145\/3806025","type":"journal-article","created":{"date-parts":[[2026,5,28]],"date-time":"2026-05-28T12:44:33Z","timestamp":1779972273000},"page":"1-13","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Polarization-Based Eye Tracking with Personalized Siamese Architecture ETRA011"],"prefix":"10.1145","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8118-9188","authenticated-orcid":false,"given":"Mantas","family":"Zurauskas","sequence":"first","affiliation":[{"name":"Reality Labs","place":["REDMOND, USA"]},{"name":"Meta","place":["REDMOND, USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-6163-2354","authenticated-orcid":false,"given":"Alexander","family":"Fix","sequence":"additional","affiliation":[{"name":"Meta Reality Labs Research","place":["Redmond, USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5382-6661","authenticated-orcid":false,"given":"Beyza","family":"Kalkanli","sequence":"additional","affiliation":[{"name":"Reality Labs","place":["REDMOND, USA"]},{"name":"Meta","place":["REDMOND, USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-8821-1941","authenticated-orcid":false,"given":"Dmitri","family":"Model","sequence":"additional","affiliation":[{"name":"Reality Labs","place":["Redmond, USA"]},{"name":"Meta","place":["Redmond, USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-0050-6587","authenticated-orcid":false,"given":"Tom","family":"Bu","sequence":"additional","affiliation":[{"name":"Reality Labs","place":["Burlingame, USA"]},{"name":"Meta","place":["Burlingame, USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-1328-9777","authenticated-orcid":false,"given":"Mahsa","family":"Shakeri","sequence":"additional","affiliation":[{"name":"Reality Labs Research","place":["Redmond, USA"]},{"name":"Meta","place":["Redmond, USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-2462-8883","authenticated-orcid":false,"given":"Dave","family":"Stronks","sequence":"additional","affiliation":[{"name":"Reality Labs","place":["Redmond, USA"]},{"name":"Meta","place":["Redmond, USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2026,5,28]]},"reference":[{"key":"e_1_3_1_2_1","doi-asserted-by":"publisher","unstructured":"Isayas\u00a0Berhe Adhanom Paul MacNeilage and Eelke Folmer. 2023. 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