光学学报, 2006, 26 (1): 34, 网络出版: 2006-04-20
一种基于编码孔径成像原理的三维成像方法
A Three-Dimensional Imaging Method Based on the Principle of Coded Aperture Imaging
摘要
三维成像技术因其应用广泛而备受关注。根据编码孔径成像的基本原理,提出了一种非相干可见光三维成像方法。这种两步成像方法的第一步采用空间位置编码的照相机阵列对物体拍照,在第二步中,首先将照相机阵列拍照得到的物体照片根据拍照时的位置关系合成为一幅图像,然后采用计算机程序模拟光学反投影解码方法解码再现出物体不同深度的表面分层图像。设计了初步的实验,该实验采用1部照相机依次在各编码位置对物体模型拍照,编码形式是包含9个点的无冗余阵列形式,物体模型只包含2个深度层次,布置在距离照相机阵列1.5 m的地方。实验得到了信噪比较高的物体模型的分层解码图像,验证了这种三维成像方法的可行性。
Abstract
Three-dimensional imaging techniques are very attractive for many applications. A non-coherent visible three-dimensional imaging method is proposed based on the principle of coded aperture imaging. It is a two-step imaging method. In the first step, the object is recorded by a cameras array which the distribution of every camera in the array is spatially coded. In the second step the object images by the cameras array are synthesized into an image according to the position, encoded images are decoded by the optical reverse projection decoding method, the stratified surface images with various depth are reconstructed. Experiments have been done to test and verify the performance of the proposed method. A camera was used to captare the images of the object successively at each coded points. The code pattern is a NRA consisting 9 coded points. Object model is composed of only two stratified planes, and is placed at the position 1.5 m away from the cameras array. High SNR reconstructed stratified decoded images of the object are obtained using computational decoding program. Experimental results prove the proposed method is feasible and viable.
郎海涛, 刘立人, 阳庆国. 一种基于编码孔径成像原理的三维成像方法[J]. 光学学报, 2006, 26(1): 34. 郎海涛, 刘立人, 阳庆国. A Three-Dimensional Imaging Method Based on the Principle of Coded Aperture Imaging[J]. Acta Optica Sinica, 2006, 26(1): 34.