【摘要】 本文介绍用散斑摄影术测量颅面骨微小三维位移场的一种方法。特点是应用多张二次曝光散斑图,根据矢量的投影变换关系,通过测定而内位移来计算空间位移。作为例子,对颅面骨接受矫形力后的早期改变进行了实验研究。更多还原

【Abstract】 This paper presents a method of measuring 3 D minute displacement field of cranio-facial bone by speckle photography.Multiple specklegrams are used in this method.Real spatialdisplacement is computed by the measurement of in-plane translations perpendicular to some viewingdirections and the use of projection transformation relation of the displacement vector.As a cal-culating example,the initial reaction of craniofacial bone produced by orthodontic forces is mea-sured.The experimental results are in agreement with the results obtained by holographic interfe-rometry.更多还原