Personalized Body Surface Diagnosis Using CNN Baseline Models

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Solution Overview

Problem

Existing automated solutions for assessing medical conditions on the human body surface are limited in their ability to handle diverse conditions across the entire body surface, including skin and cavities like the ear and mouth, and often rely on parameter estimation or training from fixed generic data, failing to account for variations in image and sound data from specific devices and individuals.

Innovation Solution

A system and method for assessing medical conditions using image and sound data from the human body surface, which involves guiding users to acquire images from specific locations, selecting optimal images, and utilizing convolutional neural networks to generate primary and secondary classification vectors. The system maintains a normal model of classification output vectors for healthy body surfaces and provides personalized diagnoses based on the Mahalanobis distance of potentially abnormal output vectors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If automated solutions use fixed generic data for training, then the system can be implemented with standard data, but it fails to account for variations in image and sound data from specific devices and individuals

Engineering Contradiction:
Improveadaptability to individual variationsVSAvoiddata requirements
Core Design Contradiction:
Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The system performs preliminary acquisition and storage of normal baseline data for each individual before diagnosis is needed. This preliminary action creates a personalized reference model that accounts for individual variations, allowing accurate detection of abnormalities without requiring extensive training data for each specific individual.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system uses each individual's own normal baseline data to create their personalized reference model, allowing the system to adapt to individual variations using the individual's own characteristics. This self-service approach eliminates the need for extensive external training data for each individual.

Inventive Principle:
Principle #25Self-service

2Reliability

If manual assessment is performed, then individual variations can be accounted for, but the process is time consuming and susceptible to human errors

Engineering Contradiction:
Improveassessment accuracyVSAvoidassessment time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system replaces manual visual and auditory assessment with automated image and sound processing using convolutional neural networks. This substitution maintains the ability to account for individual variations through personalized baseline models while eliminating human errors and reducing assessment time significantly.

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

Solution Approach 2:

The system performs automated self-assessment by comparing current images and sounds against the individual's own normal baseline data, eliminating the need for manual assessment while maintaining high reliability through personalized comparison.

Inventive Principle:
Principle #25Self-service

3Productivity

If existing automated solutions are used, then assessment speed is improved, but they cannot handle diverse conditions across the entire body surface including skin and cavities

Engineering Contradiction:
Improveassessment speedVSAvoidcoverage of body conditions
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The system is designed to handle diverse conditions across the entire body surface including skin, throat, and ear by using a unified approach of guided image and sound acquisition followed by automated processing. The system can assess multiple body locations and condition types using the same fundamental methodology, achieving both speed and versatility.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system segments the assessment process into guided acquisition at specific locations of interest, automated processing through neural networks, and personalized comparison against baseline data. This segmentation allows efficient handling of diverse conditions at different body locations while maintaining high assessment speed through automation.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS12239453B2System and method for automatic personalized assessment of human body surface conditions
Publication Date: 2025.03.04 LITTLE ANGEL MEDICAL INC
  • US12239453B2 patent drawing
  • US12239453B2 patent drawing
  • US12239453B2 patent drawing

AI summary

A system and method for personalized diagnosis of human body surface conditions from images acquired from a mobile camera device. In an embodiment, the system and method is used to diagnose skin, throat and ear conditions from photographs. A system and method are provided for data acquisition based on visual target overlays that minimize image variability due to camera pose at locations of interest over the body surface, including a method for selecting a key image frame from an acquired input video. The method and apparatus may involve the use of a processor circuit, for example an application server, for automatically updating a visual map of the human body with image data. A hierarchical classification system is proposed based on generic deep convolution neural network (CNN) classifiers that are trained to predict primary and secondary diagnoses from labelled training images. Healthy input data are used to model the CNN classifier output variability in terms of a normal model specific to individual subjects and body surface locations of interest. Personalized diagnosis is achieved by comparing CNN classifier outputs from new image data acquired from a subject with a potentially abnormal condition to the healthy normal model for the same specific subject and location of interest.