準確的穴道定位是提供高效能的按摩療程之基礎，根據中醫理論對於「穴道」的介紹，人體背部的穴道是根據於體型之比例而位於脊椎的兩側。由這個立論所述，標記有正確脊椎棘突點與穴道點之人體背部，則可以被視為提供參考用之模型。因此我們提出背部邊界線對應的方法轉換標準資訊至未知的人體背部，並以定界框為背部區域比例之估算，以相對應之定界框提供的轉換矩陣去實現邊界對應。脊椎棘突點的對應則可由轉換相異背部其邊界線之對應點所產生的三角形質心座標所定位，而對應脊椎點的資訊能在背部分劃出穴道點應該出現的區塊，以標準模型之區塊與對應區塊所求得之轉換矩陣達到準確的穴道定位。我們分別經由自身模型與多張不同姿勢及多組模型與多張不同人體的交叉實驗，驗證轉換後之穴道定位的誤差以及準確度。

Accurately localizing acupoints is our basic stage in offering high performance to massage process. According to the knowledge of Chinese medicine about “Acupoint”, the acupoints on human back are located relative to human spine, following to body ratio. In this approach, model which consists of correct spine points and acupoints on human back is adopted as reference. Concept of back contour matching is one kind of application of transforming different type of body. Bounding boxes are employed to represent the body ratio and provide registration matrix to match the contours. The barycentric coordinate in triangles localize the spine points in different bodies. Following with the spine points, acupoints can be localized in many regions on human back. Registration for matching regions is adopted again to transform the acupoints precisely. The experimented results of localization are made for both error distance and accuracy between reference model and input images in self-model and cross-model transformation.

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