New approach to extract phase feature of 3-D objects by wavelength-scanning digital holography  

作　　者：SHEN Jin-yuan LI Xian-guo M. K. Kim CHANG Sheng-jiang 

机构地区：[1]College of Information Engineering,Zhengzhou University,Zhengzhou 450052,China [2]Department of Physics, University of South Florida, Tampa, Florida 33620, USA [3]Key Laboratory of Opto-electronics Information Technical Science, EMC, Institute of Modern Optics, Nankai University,Tianjin 300071, China

出　　处：《Optoelectronics Letters》2006年第2期136-138,共3页光电子快报（英文版）

基　　金：SupportedbytheNationalNaturalScienceFoundationofChina(grantNo.60277022),OutstandingYouthFundofHenanProvince(grantNo.512000400),HenanCultivationProjectforUniversityInnovationTalentsandTheProjectsponsoredbySRFforROCS,SEM.

摘　　要：A new approach to extract phase feature of 3-D objects based on wavelength-scanning digital holography and numerical reconstruction technique is proposed in this paper.A number of holograms are recorded on a digital camera and reconstructed numerically by a computer with different wavelengths spaced at regular intervals.The theoretical analysis and computer simulations demonstrate that those pixels with the same phase of a 3-D object can focus on the same reconstruction plane.And those pixels with different phase of a 3-D object focus on the different reconstruction planes.Therefore the phase information of a 3-D object can be described by a series of reconstructed images on different planes.

关 键 词：数字全息术 波长扫描 数字相机 三维重建 

分 类 号：O438.1[机械工程—光学工程]