To Research The Method Of Extracting Movement Granule’s Characteristic Parameter Of The Sand Particle Motion Image

Researching dynamic evolutional mechanism of initial of sand particles,fundamentally understand the essential reason of the sand particles’ takes off the formand jumping migration, it is very critical to improve the forecast model of sandstormand perfect the theory of preventing sand.Establish sand flow experiments device in environmental wind tunnel andsimulate the sand flow phenomena of nature in laboratory to obtain the master datainformation of sand particles’ pattern of activity. Gathered pictorial information ofmovement sand in wind tunnel analogous system by digital high-speed photographytechnology, and to get the clear, intuitive sand instantaneous motion images.Processesin the high-speed photography image experience foundation in the predecessor whichthe experiment obtains, using Matlab and Photoshop software to complete thehigh-speed photography image superimposition according to time series, using thefunction language provided by Matlab to compiles a interactive operation platformwith the function of assistance manual recognition and the extraction movement pelletpath coordinates, solved the issue that the computer division algorithm procedure notto adapt this topic of this kind of background numerous and diverse、the goal pelletposition changeable high-speed photography experiment image and formerlyefficiency is not higher of artificial deals with the experimental image.This article made some new progresses in these aspects of processing method ofsand particles two phase current high-speed photography image and researchingmethod of the sand particles’ jumping rule, the research results have the importantreference value and the use value for settling the sand particles two phase currenthigh-speed photography image especially complicated background, meanwhile hashad the impetus function to the sandstorm starting mechanism research.This paper is different from other papers in the experimental methods and dataprocessing:(1)Restoring the movement sandstorm pellet axle path line after thesuperimposition on the digitized image using the Matlab large-scale numeral softwareand the Photoshop graph processing tool carries on automated superimpositionprocessing to the high-speed photography image; Withdrawing the information ofsandstorm pellet path coordinates、jumping forms and sand particles’ sizes usinghuman brain special logical judgment ability, Finally, Carrying on the analysisinduction to the obtained information for summarizing the rule of jumping sandparticles.Carrying on the artificial distinction extraction to the image information afterimage superimposition, the processing method of image superimposition and the application platform of artificial extraction pictorial information are new innovationswhich adapt to this experimental image, solved the difficult problem of the imagedo not dealt with procedure processing, simultaneously enhanced the efficiency ofimagery processing work, which has the method application originality.(2) According to characteristic of superimposition image this paper establishedthe auxiliary means of manual extraction of image information using the Matlabsoftware, enhanced the working efficiency of gathering the pictorial informationgreatly, and it has the obvious practical value and the innovation to the sandstormstarting rule research.(3) The sand particles movement power originate from the atmospheric rapids.The momentum transmission of air current causes the pellet jumping. The main formof the sand grain initial is the impact initial when the system balance.