The Study Of Scattering Spectrum Of Constant Speed Rotating Objects

Scattering spectroscopy technique due to its high accuracy, a wide range of characteristics analysis gradually becomes a new hot spot in the detection field, it can be used as a useful complement to other detection technologies. In recent years,the studies of the scattering spectra of objects in the state of motion is little, in this paper,the main study is the moving objects witch the relative distance of geometric center of the moving object between the light source and the detection is constant,and detecting the scattering spectra of several models around its geometric center has constant speed rotation movement, ignoring the Doppler Effect,analyzing the multi-frame processing the acquired scattering spectra at different times and different poses, Based on scattering spectrum theory and BRDF theory, For the structural characteristics of constant speed rotation of the moving object, athletic stance and moving objects on the surface of the material aspects of these three proposed three different research methods. The specific studies are as follows:(1) For a simple structure of one-dimensional objects constant speed rotation movement, measuring its scattering spectra, its surface is composed of different materials, doing feature extraction of scattering spectra data, the purpose is to eliminate the factors by the area in scattering spectrum, and highlighting the influence of bidirectional reflectance distribution function to the linear of scattering spectrum. Establishing the material characteristics of known spectral feature extraction after the database, using hierarchical clustering method, To achieve material classification of moving objects, using data in the database of known materials with feature extraction of material movement objects and doing clustering analysis of spectral data. Experimental results show that the system cluster group spacing of less than 5 after the lines belong to the same kind of material, we can use this method to identify objects of unknown material;(2) By scattering spectroscopy method, achieving the initial distinction of two types of moving objects simple and complex structures of one-dimensional constant speed rotation movement. Detecting the scattering spectra of model I and model II witch the moving is uniform rotation around a fixed axis. Using mathematical methods of Maximum Normalized, Processing and analysis the spectral data of model I and Model II, it is found that the normalized spectrum line type of there two models is obvious different, the changes of Model II’ normalized spectral dispersion rate of is very small, the changes of Model I’ normalized spectral dispersion rate of is very large, the root cause of this difference is the complexity of the difference types of object shape structure;(3) Using the analysis method of BRDF, analyzed the posture of complex structures moving object witch has Three-dimensional constant speed rotation motion. Using the BRDF test system with high accuracy indoors, measuring and analyzing the scattering spectra of Model III at different angles to the whole space and BRDF,then established a database, using the relative amount of deviation, the data measured spectral in the database has be done the relative deviation calculation, using the relative deviation of the corresponding minimum value closest to the true value of the posture as the analysis results, Experimental results show that the minimum achievable analyzed error is 0.25%.This paper presents the correlation between material scattering spectra and gesture, the research achievements will contribute to the spectral analyzed techniques in the field of gesture.