首页|Extended depth of field method with a designed diffraction optical element based on multi-depth fusion and end-to-end optimization
Extended depth of field method with a designed diffraction optical element based on multi-depth fusion and end-to-end optimization
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NSTL
Elsevier
? 2022 Elsevier B.V.Depth of field (DoF) defines the depth range of a 3D scene that can be observed by viewers. In the conventional lens-based imaging process, the diffraction effect of lens limits the display depth range, which has an adverse effect on the display quality of lens-based light-field display systems and it is the major obstacle to the practical application of light-field display. Aiming to break through the inherent shallow DOF characteristics of lens and obtain better display effect, an extended depth of field method with a designed diffraction optical element (DOE) which combined multi-depth fusion and end-to-end optimization is proposed. By analyzing the effect of diffraction on optical imaging process, a DOE enables balance display quality over the whole depth range is designed, and a pre-filtering convolutional neural network (CNN) is constructed to complete end-to-end optimization framework and avoid image blur. The validity of the proposed method is confirmed by simulation experiments and the depth range is extended effectively without display sharpness declining severely.
End-to-endExtended depth of fieldLight-field displayPre-filtering
Xie X.、Yan B.、Yu X.、Gao X.、Pei X.、Wang Y.、Sang X.
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State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications (BUPT)
NSTL
Elsevier
