Point Cloud Decoding Initial Node Size Control
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Solution Overview
Problem
Existing point-cloud decoding techniques do not define restrictions on the size of an initial node during division processes like octree, quadtree, and binary tree division.
Innovation Solution
A point-cloud decoding device and method that include a geometry information decoding unit to decode syntax defining a maximum initial node size, and a tree synthesizing unit to recursively divide the initial node, with additional units to manage data arrangement and apply specific decoding flags.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If recursive octree, quadtree, and binary tree division is performed without restrictions on initial node size, then the decoding process follows standard procedures, but the design flexibility and control over decoding efficiency are reduced
Solution Approach 1:
The patent introduces a maximum initial node size parameter that can be configured to control the division process. This parameter allows the system to adapt to different point cloud data characteristics and application requirements, providing design flexibility without fundamentally changing the decoding architecture. The parameter can be adjusted to balance between decoding efficiency and computational complexity based on specific needs.
2Productivity
If no restriction is set on initial node size, then the decoding process is simpler to implement, but the efficiency and accuracy of point-cloud decoding cannot be optimized
Solution Approach 1:
By introducing configurable maximum initial node size parameters, the system can optimize decoding efficiency for different point cloud datasets. The parameters allow control over the granularity of division, enabling faster processing for large datasets while maintaining accuracy. This approach improves productivity by allowing the decoder to adapt to various data scales and complexities without requiring multiple specialized decoders.
Data Source
AI summary
A point-cloud decoding device 200 according to the present invention includes: a geometry information decoding unit 2010 configured to decode a flag that controls whether to apply “Implicit QtBt” or not; and an attribute-information decoding unit 2060 configured to decode a flag that controls whether to apply “scalable lifting” or not; wherein, a restriction is set not to apply the “scalable lifting” when the “Implicit QtBt” is applied.