Camera-Based Skin Care Action Tracking for Routine Completeness

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Solution Overview

Problem

Existing solutions for guiding users in makeup product selection do not provide adequate support for daily skin care, lacking the ability to monitor and guide skin care actions and times effectively.

Innovation Solution

A skin care auxiliary method and device that utilize a camera-equipped electronic device to analyze hand and face regions in a time sequence, determining skin care actions and durations, and outputting integrity of the process to guide users through complete and standard skin care routines.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If image processing is performed on try makeup images to obtain virtual makeup effects, then users can select suitable makeup products, but the solution cannot guide users' daily skin care

Engineering Contradiction:

Improveapplication scopeVSAvoidskin care guidance capability

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The system is extended from single-function virtual makeup evaluation to multi-function skin care assistance by integrating action recognition, duration measurement, and integrity evaluation modules that can handle both makeup try-on and skin care routine guidance

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The skin care process is segmented into discrete actions (cleaning, toning, moisturizing, etc.) with identifiable hand-motion patterns, allowing each step to be independently recognized and evaluated for completeness

Inventive Principle:

Principle #1Segmentation

2Reliability

If the system monitors and analyzes skin care actions in real-time, then users receive guidance on completeness and duration, but the device complexity increases

Engineering Contradiction:

Improveskin care guidance accuracyVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system uses the device's existing camera and processor to perform self-analysis of skin care actions without requiring additional specialized sensors or external equipment, reducing overall system complexity while maintaining reliability

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

Physical monitoring equipment is replaced with computer vision-based action recognition algorithms that analyze hand-motion patterns in video frames, substituting mechanical sensing with software-based detection

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Measurement precision

If the system processes multiple frames of images in time sequence to determine action duration, then accurate skin care time measurement is achieved, but the processing time and energy consumption increase

Engineering Contradiction:

Improveaction duration accuracyVSAvoidprocessing time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system pre-identifies skin care action start and end points by detecting characteristic hand-motion patterns, allowing duration calculation without analyzing every intermediate frame in detail

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system processes only sufficient frames to accurately determine action boundaries and duration, avoiding unnecessary processing of all frames while maintaining measurement precision

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12579625B2Skin care auxiliary method, device, and storage medium

Publication Date: 2026.03.17 HUAWEI TECH CO LTD

AI summary

A method includes, in response to a first operation performed on a first electronic device, obtaining, by the first electronic device, an image using a camera of the first electronic device, where the image includes a hand region and a face region, and the first operation indicates a start of a skin care process; extracting a target image feature from the image, where the target image feature is a feature related to the hand region and the face region; and outputting integrity of the skin care process based on target image features corresponding to a plurality of frames of images, where the frames of images are images generated in a time sequence in the skin care process.