Research Of Time Delay And Synchronization Measurement System Of Image Fusion System

In recent years,multi-sensor image fusion technology has become a hot research topic in intelligent robots,intelligent transportation,medical diagnosis,remote sensing and military applications.Compared with the traditional image processing system,the image fusion system has the advantages of strong target resolution,good complementarity,wide time coverage and good reconstruction capability.Image fusion system is the main working equipment of image fusion technology.Because of the complexity of image fusion algorithm and the difference of synchronization between different image source algorithms,and the influence of the performance of photodetector,the image fusion system often has certain of the delay,resulting in the display of images,especially scenes with large changes in the image inconsistent with the actual image Therefore,the accurate measurement of the delay index of the image fusion system is an essential step in the acceptance phase of the image fusion system.The thesis designs and develops a method and test system for time-delay and synchronization measurement of image fusion systemThis paper analyzes the basic principles of image fusion and delay measurement techniques,developed a delay measurement method-synchronous high-speed acquisition reference point angle measurement method,then the paper describes the principle of measurement methods,analysis of system design methods.Theoretical measurement accuracy and its influencing factors,combined with design practicality and system performance index,the paper developed hardware and software that synchronously triggers the high-speed image acquisition core and image processing delay calculation based on the Lab VIEW design environment to form the image fusion system delay and synchronization measurement systemAccording to the measurement principle of angular difference of synchronous high-speed acquisition reference point,taking the image fusion system as the research object,the paper designs the visible/infrared multi-band light source and chopper reference component and uses the control system to provide a stable speed for the chopper,those become the first premise of delay measurement system development.In order to improve the system testing accuracy,the paper further studies the collimator registration system,which makes the chopper equivalent to a reference from infinity.The thesis designs a synchronous triggered image acquisition system,which acquires the image acquisition speed of high frame rate with two high-speed cameras which are triggered synchronously and realizes the accurate acquisition of the fast moving reference point Based on the collected images,the paper designs a set of delay measurement based on Lab VIEW image processing software on the PC platform.The software has such functions as image filtering,matching,calibration,segmentation,feature extraction and delay measurement display,reflects the system hardware and software combination of the design level.Finally,the paper designed experiments,the test system to capture synchronization triggering performance and image fusion system delay.The experimental tests include the delay measurement of image acquisition synchronization trigger delay measurement and visible light,infrared and color fusion,and the system delay and the synchronization between visible and infrared image output are analyzed based on the experimental results.