3D Point Cloud Transmission via Spatial Quality Segmentation

The patent applies local quality by dividing the three-dimensional space into multiple regions and assigning different quality levels to different regions. Important regions (e.g., regions containing main objects or areas of user interest) are transmitted with high quality, while less important regions are transmitted with lower quality. This resolves the contradiction by ensuring high perceived quality where needed while reducing overall data volume through selective quality degradation in non-critical areas.

The patent segments the three-dimensional point cloud space into multiple discrete regions based on spatial coordinates and importance criteria. Each region is independently processed and transmitted with appropriate quality settings. This segmentation allows the system to manage data volume by treating different spatial regions separately, applying high quality only to necessary segments while using lower quality for others.

The patent ensures that critical regions maintain high quality even when overall data volume is constrained. By identifying and prioritizing important spatial regions (such as regions containing primary objects or areas within user field of view), the system allocates sufficient data quality to these areas while accepting lower quality in non-critical regions, thus maintaining acceptable perceived quality overall while reducing total data volume.

The patent dynamically adjusts quality parameters (such as point density, attribute precision) based on spatial region importance and transmission conditions. For important regions, higher quality parameters are maintained, while for less important regions, parameters are reduced to optimize data volume. This selective parameter adjustment resolves the contradiction between data volume reduction and perceived quality maintenance.

The patent implements local quality differentiation by assigning distinct quality levels to different spatial regions based on their importance. This approach increases transmission efficiency by avoiding the transmission of excessive data for non-critical regions while maintaining simple processing through standardized quality assignment rules for each region type. The system achieves better efficiency without requiring complex per-point quality decisions.

The patent segments space into predefined regions with assigned quality characteristics, allowing efficient batch processing of each region. This segmentation approach improves transmission efficiency by enabling parallel processing and optimized data rates for different regions, while keeping the overall process manageable through systematic region classification and quality assignment.