A spatial modulation method for electronic speckle patterns is presented.Carrier fringes are produced by object tilting and the phase field of deformation is demodulated by Fourier transform.The principle is discussed...A spatial modulation method for electronic speckle patterns is presented.Carrier fringes are produced by object tilting and the phase field of deformation is demodulated by Fourier transform.The principle is discussed.The system and some typical experimental results are offered.The results prove that by using object tilting method speckle patterns can be modulated very well and the out-of displacement of an object can be obtained effectively.展开更多
文摘A spatial modulation method for electronic speckle patterns is presented.Carrier fringes are produced by object tilting and the phase field of deformation is demodulated by Fourier transform.The principle is discussed.The system and some typical experimental results are offered.The results prove that by using object tilting method speckle patterns can be modulated very well and the out-of displacement of an object can be obtained effectively.
