The present invention relates to a bone conduction autonomous bone conduction apparatus, comprising: a storage unit connected to a control unit, which stores a program for performing skeletal autocation and three-dimensional measurement data of bones for executing a program; an input unit connected to the control unit and inputting a user command; And a control unit connected to the storage unit, the input unit, and the display unit to control the skeleton auto-location method. The skeletal auto-location is a step of calculating the distance between the data nodes 101 constituting the three-dimensional data of the three-dimensional data file with respect to one or more bones stored in the storage unit and extracting two data nodes having the maximum distance (ST-111, reference axis computation step) of deriving a reference axis 301 passing through the two data nodes forming the maximum distance, a reference axis 301 from the data nodes forming the maximum distance, (ST-115, step 1) in which the virtual first center point 301-1 on the reference axis 301 is calculated (the first center point calculation step) And a sub-axis operation step).
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