Plif one kind of image correction method based on digital image registration techniques

The present invention discloses an apparatus and method for correcting PLIF image based on digital image registration techniques. The apparatus comprises a Nd: YAG laser, the beam shaping lens group sheet-like measurement object, reference object, the image intensifier cameras, a computer, a timing control system, a control system for synchronizing the timing pump laser and the camera image enhancement , such as enhanced time synchronization with the camera door open time fluorescence measured object, the non-filtered measured signal interference caused by noise, the computer for recording the acquired image and the digital image PLIF registration correction. The method of the present invention is to eliminate image distortion by using digital image registration techniques, to solve the joint line during measurement and other optical measurement methods, the problem of flight measurement requirements conflict exists between the various optical measuring means due PLIF technique, greatly the increased flexibility of application PILF technology for online measurement.