Information processing device and method

By deriving and scaling face normal vectors to a maximum scalar value, the method controls data length and accuracy of vertex normal vectors, enhancing the precision and efficiency of V-DMC encoding.

WO2025249188A1 Publication Date: 2025-12-04SONY GROUP CORP
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Patent Information

Application Number
PCT/JP2025/017666
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-05-31
Filing Date
2025-05-15
Publication Date
2025-12-04

AI Technical Summary

Technical Problem

The derivation of vertex normal vectors in V-DMC encoding requires mutual exclusion and conversion to integer types, leading to an increase in data length and potential accuracy issues due to the dependence on face normal vector areas, which can result in increased processing requirements and reduced precision.

Method used

Derive a maximum scalar value of face normal vectors and scale them to limit the range of vertex normal vectors, using this value to encode displacement vectors in a local coordinate system, thereby controlling the data length and maintaining accuracy.

Benefits of technology

This method suppresses the increase in data length and processing load of vertex normal vectors, maintaining accuracy and reducing the difference between encoded and original meshes, thus improving subjective quality and processing efficiency.

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Abstract

The present disclosure relates to an information processing device and a method configured so that it is possible to suppress an increase in the data length of a vertex normal vector. The method includes deriving a maximum scalar value of a face normal vector of an adjacent face around a target vertex of a subdivided base mesh, using the maximum scalar value to scale the face normal vector of the adjacent face, using the scaled face normal vector to derive the vertex normal vector of the target vertex, and deriving a local-coordinate displacement vector based on the vertex normal vector. The present disclosure can, for example, be applied to information processing devices, electronic equipment, information processing methods, or programs, etc.
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