Point Cloud Attribute Video Coding With Variable Frame Attributes
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Solution Overview
Problem
Existing image processing methods for point cloud data fix the number of attributes across all frames, leading to increased data coding and processing loads, even when not all attributes are necessary.
Innovation Solution
The number of attributes corresponding to a single geometry is made variable in the time direction by selectively coding only necessary attribute video frames, using attribute information to signal which frames are coded, and allowing for interpolation or omission of unnecessary frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the number of attributes is fixed for all frames, then the coding structure is simple, but the data amount and processing load increase unnecessarily
Solution Approach 1:
The patent applies dynamics by making the number of attributes variable across frames rather than fixed. The attribute video frame generation unit dynamically determines which attributes to encode for each frame based on actual content requirements, allowing the system to adapt the attribute count to match the information needs of each specific frame while maintaining a relatively simple overall coding structure.
2Reliability
If all attributes are coded for every frame, then complete information is preserved, but the processing load and coding time increase
Solution Approach 1:
The patent extracts only the necessary attributes for each frame rather than coding all attributes uniformly. The attribute video frame generation unit selectively extracts and encodes only those attributes that are actually needed for the current frame's content representation, discarding redundant attribute data. This extraction approach preserves complete information where needed while eliminating unnecessary processing overhead.
3Quantity of substance
If the number of attributes is reduced per frame, then the data amount decreases, but the adaptability to represent all necessary information is limited
Solution Approach 1:
The patent achieves adaptability through dynamic attribute selection. The attribute video frame generation unit can vary the number and type of attributes encoded for each frame based on the specific content requirements, allowing the system to represent all necessary information when needed while reducing data amount when fewer attributes suffice. This dynamic approach provides flexibility without requiring a fixed comprehensive attribute set for all frames.
Data Source
AI summary
There is provided an image processing device and a method that enables the number of attributes corresponding to a single geometry to be variable in a time direction. An attribute video frame that is a video frame in which a patch obtained by projecting each of a plurality of attributes to a two-dimensional plane for each partial region is arranged is generated, the plurality of attributes corresponding to a single geometry of a point cloud that expresses an object with a three-dimensional shape as a group of points, the generated attribute video frame for each attribute is coded, and attribute information that is information indicating the generated attribute video frames corresponding to the same timing is generated. The present disclosure can be applied to, for example, an image processing device, electronic equipment, an image processing method, a program, or the like.