Virtual Material Appearance Signature Retrieval
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Solution Overview
Problem
Current methods lack an efficient way to compare and retrieve virtual material appearances from a database that are similar to a given appearance, due to the absence of a standardized appearance data model and the complexity of untangling visual characteristics from a single 2D image, making it difficult to identify visually similar virtual materials for design and rendering purposes.
Innovation Solution
A computer-implemented method that computes an appearance signature from values representing structure, reflection, and color of virtual material appearances, allowing for deterministic evaluation and comparison of similarity between virtual materials, enabling the retrieval of similar virtual material appearances from a database by comparing these signatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If virtual material appearances are visually assessed by user observation of rendered objects, then the user can perceive the appearance in context, but the appearance perception becomes dependent on external environment conditions making comparison difficult
Solution Approach 1:
The patent extracts the appearance characteristics from the rendered visual context and isolates them into environment-independent parameters. By separating the material appearance properties from the rendering environment, the system enables direct comparison of material appearances without the confounding influence of external conditions such as lighting and background.
Solution Approach 2:
The patent introduces appearance signatures as an intermediary representation between the virtual material appearances and the user. These signatures serve as a mediator that captures essential appearance characteristics in a standardized format, allowing users to compare materials based on objective metrics rather than subjective visual perception affected by environment.
2Adaptability or versatility
If no standardized appearance data model is used, then various appearance models can be accommodated, but there is no consistent way to compare and retrieve similar virtual material appearances
Solution Approach 1:
The patent creates a universal appearance signature framework that can represent multiple different appearance models and data formats. This standardized signature structure serves as a common language that accommodates various virtual material appearance representations while enabling consistent comparison and retrieval operations across diverse input formats.
Solution Approach 2:
The patent transforms appearance data from various models into a standardized set of parameters that form the appearance signature. By changing the parameter representation to a common format, the system enables direct comparison and mathematical operations on appearance data regardless of the original appearance model used.
3Ease of operation
If manual comparison of virtual material appearances is performed, then flexibility in assessment is maintained, but time consumption and resource usage increase significantly
Solution Approach 1:
The patent replaces the manual visual assessment process with an automated computational system. Instead of users manually observing and comparing rendered appearances, the system automatically computes appearance signatures and performs similarity comparisons using mathematical operations, dramatically improving retrieval efficiency while maintaining assessment flexibility through configurable similarity criteria.
Data Source
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AI summary
The invention notably relates to a computer-implemented method for retrieving a similar virtual material appearance from a database. The method comprises providing a database including virtual material appearances associated to an appearance signatures computed from values representing at least one of a structure, a reflection and a color of the associated virtual material appearance. The method further comprises providing a first appearance signature associated to a first virtual material appearance. The method further comprises identifying one or more virtual material appearances similar to the first virtual material appearance by comparing the first appearance signature with appearance signatures respectively associated to virtual material appearances in the database. The method improves retrieval of virtual material appearances.