Research Of Object Surface Profile Optical Dynamic Measurement And Identification By Characteristic

Optical measurement of objects' 3D surface profiles is well-known as themost promising 3D profile measurement method for its features such asnon-contact measurement, high accuracy and high resolution, high speedmeasurement and high automation degree. The measurement of objects' 3Dsurface profiles is more and more important in the modern industry andpractical manufacture. But high precision and dynamic procedure measurementfor rapid measurement and identification of dynamic objects' 3D profilesand characteristics becomes the hotspots and the desiderating issues ofobject charactertistic identification and industry and engine onlinemeasurement. Based on wide-ranging investigation and generalization,according to our condition, the researching direction had been determinedto study of characteristic distillation from laser distance measurementprofile and 3D profile measurement of stuctrued light fringe for themeasurement and characteristic identification of dynamic object's 3Dprofile.1. This paper introduces a new arithmetic approach to the objectidentification of lidar range image by using the least squares estimationand linear glide updater for the design of a filter. The filter window isset up in accordance to the characteristics of object shape size and objects'prior characteristic. This arithmetic approach can have an easy access tothe process of object identification. The arithemetic analysis andexpirements results illuminate that the arithemetic is fit to real-timeobject identification.2. An algorithm of self-adopted standard template matching is introduced.The algorithm, which based on characteristic image identification, pick outthe distress pavement road surfaces, solve the structured light imagesclassification problem of highway pavement distree road surface and realizehigh-speed and real-time measurement of high-way pavement surfacesdeformation.3. The tricolor fringe phase-shifting technique in digital projectiongrating profilometrY to reconstruct the profiles of object surface is proposed. Only one fringe pattern is used to reconstuct the profiles of objectsurface by the advanced thchnique combined with a three-step phase-shiftingalgorithm without any phase-shifitng devices. The technique improves theobjects' 3D profile reconstruction quality from single fringe pattern byprojection grating. The proposed technique is economical and practicle andmaybe use for the dynamic tea-time analysis. The experiment illuminates thatthe technique is right and feasible.