Hologram with the enlarged depth of field captured by the commercial plenoptic camera

A method aiming at depth of field of light field based Fresnel hologram is proposed, which is generated by using the weighted type smart pixel mapping. The conventional integral holograms are generally generated through Fourier transforming the elemental images (EI) of II into hogels. However, the non-uniform compression along optical axial is inevitable within the generation of integral hologram. The weighted type smart pixel mapping is introduced to enhance the depth of field of light field-based Fresnel hologram while keeping a compact image size and being free from moving the lenslet array. The processed hologram can reconstruct the 3D image with the combined light fields of all the integral hologram sequences. Finally, the experiment of real 3D object is numerically and optically conducted. The high matching results among them confirm this work a better performance over the conventional methods.