基于不同微透镜阵列参数的集成成像微图像阵列生成方法

Generation Method of Elemental Image Array using Micro-lens Arrays with Different Specifications

提出一种基于不同微透镜阵列参数的集成成像微图像阵列生成方法。在该方法的拍摄过程中,首先通过微透镜阵列1拍摄三维场景获得微图像阵列1,再通过一个包括虚拟显示和虚拟拍摄两个步骤的像素映射算法,生成与微图像阵列1参数不同的微图像阵列2。在显示过程中使用的微透镜阵列2与拍摄时的微透镜阵列1具有不同的参数,微图像阵列2通过微透镜阵列2重建出全真的3D图像,重建的3D图像没有图像缩放和畸变。同时本文还推导了微图像阵列1、2和微透镜阵列1、2各参数应满足的数学关系。实验结果验证了理论推导的正确性。

An generation method of elemental image array using micro-lens arrays with different specifications is proposed.In the pickup process of the proposed method,the elemental image array called EIA 1 is captured through MLA 1.A pixel mapping algorithm for virtual display and virtual pickup processes is deduced to generate the elemental image array called EIA 2,which is picked up by MLA 2.The micro-lens array 2 in the display process called MLA 2 has specifications different from the micro-lens array 1 in the pickup process.The 3Dimages reconstructed by EIA 2 and MLA 2 don't suffer any image scaling and distortions.Meanwhile,the mathematical relationships between EIA 1,EIA 2,MLA 1and MLA 2 are deduced as well.The correctness of our theoretical analysis is demonstrated experimentally.