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

• 来源期刊: 光电子快报（英文版）
• 学科: 物理学
• 年，卷（期）: 2006,（2）
• 页码范围: 136-138
• 页数: 3页
• 分类号: O438.1
• 语种: 英文

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.