眼球定位方法及系統

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

103146641

專利證號

I 515609

專利獲證名稱

眼球定位方法及系統

專利所屬機關 (申請機關)

中原大學

獲證日期

2016/01/01

技術說明

眼球追蹤法大致可分成接觸式和非接觸式兩類。接觸式的如眼電圖法、搜尋線圈法，非接觸式的有瞳位追蹤法及紅外線眼動圖法。上述這些方法都各有其缺點。所以我們提出一個三點測圓法來追蹤角膜緣，也就是虹膜邊界，從一般光線反射的眼部影像中搜尋出虹膜邊界上的三個特徵點，並以此三點為頂點之三角形的外接圓預估出虹膜邊界及中心點。此外若有一眼無法成功估測出虹膜邊界，則可以成功估測出之眼睛的結果為基礎，用映射補償的方式去推算出另一眼的結果。此方法的運算量不高，眼球抓取正確的成功率則相當高。 The eye tracking method can be divided in two categories, namely contact and non-contact. For example, the EOG (electro-oculogram) method and the search coil method belong to the contact category, while optical-type eye tracking and infra-red oculography belong to the non-contact category. However, all these methods have some drawbacks. Therefore, we propose a method called three-point circle detection to track the limbus or iris boundary. In the proposed method, three iris feature points on the iris boundary are found from the fluorescent light reflection of the eyes and the boundary as well as the center of the iris are estimated as a circumscribed circle determined by the three points. In addition, when the estimation fails for one eye, its estimation result can be derived from the successful estimation result of the other eye based on an idea of mapping compensation. The computational cost of the proposed method is not high, yet the successful eye capturing rate is quite high.

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本部(收文號1090010411)同意該校109年2月17日原產字第1090000440號函申請終止維護專利(中原)

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