現行國內的鞋楦在大量製作的情形下,往往都直接採用國外的尺碼系統,因此並不能完全符合國人足型的需求。加上鞋內之鞋墊也不一定合適於每個人獨特的足型若使用不適當的足弓墊,容易引起足部的不舒適,嚴重時則會造成足部的傷害。而目前有關於足型分類的研究中,多以傳統的足弓研究方法如足印法等為主,並無法滿足弓之3D特性,所以容易產生誤差及資料謬誤。 有鑑於此,本研究利用三維足部掃描儀獲取15至49歲共240位不同年齡層的國人(男女各半),於三種負重程度下左腳之3D足部模型。應用這些型態資料再擷取8項足弓特徵尺寸進行因素分析,並依據此標準以資料挖礦方法建立足弓分類模式,最後足弓的3D分類結果將與傳統足印分類法之結果進行比較。可獲的研究成果為運用3D足弓特徵可更容易掌握足弓在不同年齡時,其絕對尺寸及相對3D形狀之發展與變化,瞭解不同負重程度時,足弓在橫斷面、體積及角度上產生之形變。最後對於國人之3D足弓分類模式,將有助於足部研究及足弓墊與鞋子的設計、製造。
In most of the domestic cases in Taiwan, the shoe lasts have designed and massly produced by adopting foreign sizing system. Thus, the products cannot satisfy the foot shapes of Taiwanese people. Moreover, the arch supports may not be suitable to all of people in Taiwan. It is easy to feel uncomfortable or even to get injured without using proper insoles. Most of current studies about foot shape classification are using traditional methods such as footprint. Thus, the differences and errors may easily occur since the traditional methods are not able to analyze the 3D property of foot arches. In this study, the 3D foot CAM was employed to take the 3D left foot models of 240 people (including 120 males and 120 females) who aged from 15 to 49 years old. There are 3 different loading levels to be considered. The factor analysis was applied to measure 8 meajor landmarks on foot arch, which are obtained from the data of 3D foot CAM. According to the analysis result, a method of foot arch classification was constructed by using data mining. A comparison between proposed result and traditional classification was also made. As a result, by analyzing the 3D features of foot arches, it is more easily to realize the relation between the absolute size and the 3D development, and the foot arch deformation of cross-section, volume and angle. This method of 3D foot arch classification can help improving the foot studies and the design and the production of insoles and shoes.
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