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Muscle Distribution Model

During the generation of a muscle distribution model, there is a method using only obtained landmarks and a method using landmarks and centerlines. The simplest distribution model is a method for determining the muscle area using closure landmarks. Closure landmarks are used to determine the closure region to detect the initial region of the muscle. This is effective when the distance between the origin and insertion is small and the shape of the muscle is simple. However, it is not suitable when the muscles and other organs are adjacent to each other, because the separation is difficult in the recognition process. A method using landmarks and centerlines solves this problem. This is the technique for closure region, including the centerline and landmarks. The closure region depends on the target muscle, but is defined by the shape information and the statistical variance, which is obtained by using the landmarks. This can be realized by specifically fitting a surface to the centerline, placing auxiliary points at regular intervals on the centerlines, and performing surface interpolation using these auxiliary points. This approach is strongly independent of differences in body shape and is effective for recognition of the surface muscles. Figure 3.9 shows the distribution model in the chest and abdominal region.

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