Fig. 1. Generation of elemental image array. (a) Virtual camera array; (b) elemental image; (c) window interception and image mosaic; (d) elemental image array

Fig. 2. Structure of lenslet arrays with the same inscribe circle diameter of d. (a) Rectangular-packed, circular-based array; (b) honeycomb-packed, circular-based array; (c) rectangular-packed, square-based array; (d) honeycomb-packed, hexagonal-based array

Fig. 3. Diagram of (a) rectangular-packed sampling and (b) honeycomb-packed sampling

Fig. 4. (a) Window interception and (b) image mosaic

Fig. 5. Comparison of different algorithms. (a) Proposed method; (b) single viewpoint independent rendering; (c) different ray tracing rendering methods; (d) relation between subimage and elemental image

Fig. 6. LED integral imaging display platform

Fig. 7. (a) 3D models; (b) circular elemental image arrays; (c) square elemental image arrays; (d) hexagonal elemental image arrays

Fig. 8. Comparison of rendering time between (a) proposed method and (b) method in Ref.[17] on JLU and dolphin, when the lenslet array is 24 pixel×24 pixel

Fig. 9. Comparison of processing time between the proposed method and method in Ref.[17] under different lenslet arrays. (a) 10 pixel×10 pixel; (b) 20 pixel×20 pixel; (c) 30 pixel×30 pixel; (d) 40 pixel×40 pixel

Fig. 10. Computer reconstruction of stereo images at different depth planes. (a)(c) Proposed method; (b)(d) method in Ref.[17]; (a)(b) square elemental image array; (c)(d) hexagonal elemental image array

Fig. 11. PSNR comparison between stereo images reconstructed at different depth planes by (a) square elemental and (b) hexagonal elemental image array

Fig. 12. Stereoscopic display of LED-based integral imaging using (a)(b) square and (c)(d)circular elemental image arrays generated by (a)(c) proposed method and (b)(d) method in Ref.[17]