Multispectral Meal Imaging System for Accurate Food Identification

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Solution Overview

Problem

Current computer vision systems are inadequate in accurately identifying food contents in digital images, particularly when ingredients overlap or are not clearly visible, leading to insufficient data for precise recipe generation and nutrition analysis.

Innovation Solution

A system that processes multispectral image data using machine learning algorithms and sensor arrangements, including multispectral cameras and mass spectrography, to guide users in adjusting image capture settings, such as camera angles and ingredient positioning, to ensure comprehensive data collection for accurate food identification and recipe generation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If computer vision systems use standard image processing techniques, then the system complexity remains low, but the measurement precision of food contents is insufficient

Engineering Contradiction:
Improvefood contents identification accuracyVSAvoidsystem complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system segments the food identification process into multiple stages: initial image capture, preliminary analysis, identification of insufficient data, targeted recapture guidance, and iterative refinement. This segmentation allows the system to achieve high measurement precision by focusing computational resources only on problematic areas rather than processing entire images uniformly, thus managing system complexity effectively.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system transitions from standard 2D RGB imaging to multispectral imaging, adding spectral dimensionality to the data collection process. This enables differentiation of food ingredients based on their unique spectral signatures, significantly improving food contents identification accuracy while the automated guidance system manages the increased data processing complexity.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Loss of information

If the system captures images from multiple angles and with adjusted settings, then the completeness of food data improves, but the time required for analysis increases

Engineering Contradiction:
Improvefood data completenessVSAvoidanalysis time
Core Design Contradiction:
Loss of informationVSLoss of time

Solution Approach 1:

The system implements a feedback loop where initial image analysis identifies insufficient or ambiguous food data, generates specific guidance for recapture (such as adjusting camera angle or lighting), and iteratively refines the dataset. This feedback mechanism ensures data completeness while minimizing time loss by targeting only the specific elements that require additional capture rather than recapturing entire meals repeatedly.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs preliminary analysis of captured images to identify which specific food ingredients lack sufficient data before initiating recapture sequences. This preliminary identification allows the system to prepare targeted guidance instructions in advance, reducing overall analysis time by avoiding unnecessary recapture of already-sufficient data.

Inventive Principle:
Principle #10Preliminary action

3Measurement precision

If the system provides detailed guidance to users for adjusting capture settings, then the quality of collected data improves, but the ease of operation decreases

Engineering Contradiction:
Improvedata qualityVSAvoiduser operation simplicity
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The system automatically analyzes captured images, identifies data quality issues, and generates context-specific guidance instructions without requiring user expertise in imaging or food science. The system serves itself by detecting problems and formulating appropriate recapture guidance, thereby maintaining data quality while preserving user operation simplicity through automated intelligence.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system dynamically adjusts guidance parameters based on the specific deficiencies detected in each capture session. Rather than providing fixed, complex instructions, the system modifies guidance parameters (such as suggesting specific angle changes, lighting adjustments, or distance modifications) to match the actual data quality issues, thereby maintaining simplicity while improving data quality through targeted parameter optimization.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS11756282B2System, method and computer program for guided image capturing of a meal
Publication Date: 2023.09.12 SONY GROUP CORP
  • US11756282B2 patent drawing
  • US11756282B2 patent drawing
  • US11756282B2 patent drawing

AI summary

A system including circuitry configured to process image data of a meal to obtain information on the contents of the meal; generate, based on the obtained information, a query with guidance to change image capture settings: and guide a user to pick up at least a part of the meal.