Depth Calculation Method of Integral Imaging Based on Gaussian Beam Distribution Model

Abstract

In this paper, we propose a concept of the optimal viewing distance range and a depth calculation method of integral imaging. By considering the light emanating from a single elemental image point as a Gaussian beam, we analyze the integral imaging depth range and deduce the depth calculation formulas in different display modes. Experiments in focused mode were carried out, and good results finally confirmed the feasibility of the proposed method.Index Terms-Depth of field, Gaussian beam, integral imaging, viewing distance, 3D display.

Analysis of the depth of field of integral imaging displays based on wave optics

“…Parameter g represents the gap between the display and the MLA, and l represents the conjugate distance defined by the Gauss lens law [41]. A DOF calculation method based on Gaussian beam distribution model was also proposed [38]. In that model, the light emanating from a single pixel on the display was considered as a Gaussian beam whose waist is located at the CDP.…”

“…Note that for an integral imaging display the pixel size of the display device is a factor that strongly influences the DOF [37,38]. However, in our analysis, we regard the display pixels as ideal points for simplification.…”

“…In section 2, we review two pre-existing DOF calculation methods based on geometrical optics and Gaussian beam distribution model [37,38]. In section 3, we propose a DOF calculation method using wave optics [39,40].…”

Resolution Analysis of Axially Distributed Image Sensing Systems under Equally Constrained Resources

“…The ADS scheme can provide simple recording architecture by translating a single camera along its optical axis. The recorded high-resolution elemental images generate the clear 3D slice images for the partially occluded 3D objects compared with the conventional integral imaging method [6][7][8][9][10][11][12][13][14][15][16]. The capacity of this method to collect 3D information is related to the object location from the optical axis.…”

Integral imaging without image distortion using micro-lens arrays with different specifications

“…So far, researchers have overcome the problems of low 3-D resolution, 2,3 limited depth of field, etc. [4][5][6][7][8][9][10][11] How to make the II 3-D display accepted by home users is an urgent issue. In the conventional II, the parameters of micro-lens arrays (MLAs) used in both pickup and display processes should be identical.…”