3D Holoscopic Video Representation and Coding Technology - Novel 3D Media Technologies - page 85

Fig. 5.11 The Patch Remapping step to generate a sparse 3D holoscopic image [ 15 ] (Copyright

©

2013, IEEE)

Then, each 2D view can be subdivided in patches and each patch can be mapped
to its original position in the 3D holoscopic image, as illustrated in Fig. 5.11 .
A template of the 3D holoscopic image assembles all patches and the output of
this step is a sparse 3D holoscopic image (see Fig. 5.11 ).

5.4.1.2 Micro-Image Refilling Step

In the Micro-Image Refilling step, the significant cross-correlation existing between
neighboring micro-images is emulated so as to fill the holes in the sparse 3D
holoscopic image (created in the Patch Remapping step) as much as possible.
As such, the input for this step is a sparse 3D holoscopic image generated by the
Patch Remapping step. Then, for each micro-image in the sparse 3D holoscopic
image, an available set of pixels, such as the patch with size PS PS, is copied to a

suitable position in a neighboring micro-image. This position is defined by the
position of the patch being copied, shifted by i

PS. Since this copy is done in both
horizontal and vertical directions, i is a two-dimensional variable corresponding to
the relative position of the current micro-image (where the patch is copied from) to
the neighboring micro-image (where the patch is pasted on). An illustrative exam-
ple of this process is shown in Fig. 5.12 for only three neighboring micro-images.
The output of this step is the IL reference picture (Fig. 5.12 ).