  With the fast growth of immersive video sequences, achieving seamless and
high-quality compressed 3D content is even more critical. MPEG recently
developed a video-based point cloud compression (V-PCC) standard for dynamic
point cloud coding. However, reconstructed point clouds using V-PCC suffer from
different artifacts, including losing data during pre-processing before
applying existing video coding techniques, e.g., High-Efficiency Video Coding
(HEVC). Patch generations and self-occluded points in the 3D to the 2D
projection are the main reasons for missing data using V-PCC. This paper
proposes a new method that introduces overlapping slicing as an alternative to
patch generation to decrease the number of patches generated and the amount of
data lost. In the proposed method, the entire point cloud has been
cross-sectioned into variable-sized slices based on the number of self-occluded
points so that data loss can be minimized in the patch generation process and
projection. For this, a variable number of layers are considered, partially
overlapped to retain the self-occluded points. The proposed method's added
advantage is to reduce the bits requirement and to encode geometric data using
the slicing base position. The experimental results show that the proposed
method is much more flexible than the standard V-PCC method, improves the
rate-distortion performance, and decreases the data loss significantly compared
to the standard V-PCC method.
