Odor to Color Transcription via Neural Network Analysis

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Solution Overview

Problem

Current methods for objectively attributing chromatic profiles to odors or aromas are time-consuming, costly, and require large panels of expert judges, making it difficult to precisely describe odors in terms of colors or vice versa, especially for new odors not previously tested.

Innovation Solution

A process involving physico-chemical analysis and artificial neural networks to transcribe odors into colorimetric descriptions, using a layered architecture network that learns from test odors and aromas to associate volatile molecules with color profiles, incorporating sensory descriptors for refinement and similarity-based grouping.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If expert sensory evaluation judges are used to assign colors to odors, then chromatic profiles can be obtained, but the process becomes time-consuming and costly

Engineering Contradiction:
Improvechromatic profile accuracyVSAvoidevaluation time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent applies preliminary action by pre-training artificial neural networks with large datasets of odor-chromatic associations before actual evaluation. The networks are trained offline using comprehensive reference data, enabling rapid automated classification without requiring real-time human judge involvement. This preprocessing of knowledge bases allows the system to achieve expert-level accuracy while eliminating the time-consuming aspect of manual evaluation.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent replaces the mechanical system of human sensory evaluation with an artificial neural network-based automated system. The neural networks process odor data and generate chromatic profiles through computational algorithms, substituting human judges with machine learning models. This substitution maintains measurement precision while dramatically reducing evaluation time and eliminating the need for training and coordinating multiple expert judges.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If a large panel of judges is used to limit variability, then reliable results are obtained, but the complexity and cost increase

Engineering Contradiction:
Improveresult reliabilityVSAvoidpanel organization complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent uses copying by creating virtual replicas of expert judge capabilities through artificial neural networks. Multiple neural network models are trained to replicate the decision-making patterns and chromatic assignment behaviors of human experts. These copied expert systems can be deployed in parallel to process multiple odor samples simultaneously, achieving high reliability through consensus algorithms while eliminating the logistical complexity of organizing and managing large panels of human judges.

Inventive Principle:
Principle #26Copying

3Adaptability or versatility

If human judges are used to describe odors by colors, then chromatic profiles are obtained, but new odors cannot be described without prior testing

Engineering Contradiction:
Improveodor description capabilityVSAvoidnew odor evaluation time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent applies self-service by enabling the artificial neural network system to autonomously evaluate and assign chromatic profiles to new odors without requiring human judge intervention. The trained networks possess generalized knowledge from their training datasets, allowing them to independently classify novel odor samples by comparing them against learned patterns. This self-service capability provides immediate chromatic descriptions for new odors, eliminating the time delay associated with recruiting and training human judges for each new evaluation task.

Inventive Principle:
Principle #25Self-service

4Measurement precision

If expert judges are trained to obtain objective chromatic profiles, then measurement precision improves, but training time and costs increase

Engineering Contradiction:
Improvechromatic profile objectivityVSAvoidjudge training time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent replaces the training process for human expert judges with an automated training process for artificial neural networks. The neural networks are trained using large, comprehensive datasets of standardized odor-chromatic associations, ensuring objective and consistent learning without the variability inherent in human training. This substitution eliminates the time and cost associated with recruiting, training, and certifying human expert judges while maintaining or improving measurement precision through the objectivity of machine learning models.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentEP2861980B1Method for transcribing an odor or aroma into a color information and a color information into a list of molecules
Publication Date: 2019.10.23 UNIVERSITY OF LORRAINE
  • EP2861980B1 patent drawingFigure 1a
  • EP2861980B1 patent drawingFigure 1b
  • EP2861980B1 patent drawingFigure 2~3

AI summary

The invention relates to a method for transcribing an odor or aroma into a colorimetric description, including the following steps: a first step (10) for the physicochemical analysis of said odor or aroma (O) in order to associate same with a physicochemical description (PCN) including a physicochemical vector (PQ) that includes proportions (qmi) associated with a predetermined set of respective volatile molecules (Mi); a second step (20) for the physicochemical analysis of a set of so-called test odors and/or aromas (Ot) in order to assign, to each test odor or aroma (Ot) of said set, a so-called test physicochemical description (PCt) including a so-called test physicochemical vector (PQt) that includes test proportions (gmti) associated with said predetermined set of respective volatile molecules (Mi); a step (30) for assigning, to the test odors and/or aromas (Ot), respective test colorimetric descriptions (DCt) that include so-called test proportions (qcti) associated with a set of respective colors (Cj); and a step for assigning (70), to the odor or aroma (O), a colorimetric description including proportions (qci) associated with said respective colors (Cj).