APPARATUS AND METHOD FOR VIBRATION MEASUREMENT USING THE METHOD OF HIGH SPEED IMAGE PROCESSING AND CROSS-CORRELATION

摘要

PURPOSE: A vibration measuring method and a vibration measuring device using a cross-correlation type high-speed image processing method are provided to apply a cross correlation type algorithm to two sheets of input images, thereby effectively measuring vibration properties. CONSTITUTION: A vibration measuring method using a cross-correlation type high-speed image processing method is as follows. A light source is generated by a light generator. The light source is diffused by a light diffusion lens module. The diffused light source is transmitted through a mesh grid so that a mesh image is generated on a vibrating object. The mesh image is photographed by a camera. The mesh image photographed by the camera is processed so that displacement vectors at each spot are calculated. [Reference numerals] (AA) Camera; (BB) CCD camera; (CC,DD) Image acquisition board; (EE,FF) Image processing system; (GG) Monitor; (HH) Computer body; (II) Mesh image; (JJ) Mesh grid; (KK) Extended light source irradiating unit; (LL) Light source; (MM) Light source extending lens module