Customized Image Reprocessing for Low-Light Selfie Personalization

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Solution Overview

Problem

Existing image capturing systems, particularly in low light conditions, often produce unflattering selfies that users deem unworthy of sharing due to insufficient illumination and lack of personalized adjustment options, leading to cumbersome manual editing processes.

Innovation Solution

A customized image reprocessing system utilizing machine learning to automatically adjust pixel-level parameters based on sensor data and user preferences, incorporating adaptive front flash views to enhance image quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If automatic image processing is applied, then image quality and processing speed are improved, but personalization and adaptability deteriorate

Engineering Contradiction:
Improveimage processing speedVSAvoidpersonalization capability
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The system dynamically adjusts processing parameters based on real-time analysis of the captured image and user profile. The machine learning model continuously adapts its recommendations based on feedback, making the automatic processing personally tailored for each user while maintaining speed. This resolves the contradiction by making the automatic process flexible and adaptive rather than rigid and generic.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes multiple processing parameters (exposure, contrast, saturation, sharpness) based on machine learning predictions specific to each user's preferences and the captured image characteristics. By adjusting these parameters dynamically according to user profile and image content, the system achieves both speed and personalization simultaneously.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If manual image editing is performed, then personalization and control are improved, but time consumption and complexity increase

Engineering Contradiction:
Improvepersonalization capabilityVSAvoidediting time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The system performs preliminary automatic processing based on machine learning predictions before the user completes any manual editing. The machine learning model pre-processes the image according to the user's profile and provides a personalized baseline, reducing the time needed for manual adjustments while maintaining full user control and personalization capability.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system incorporates feedback mechanisms where user interactions with the processed image refine future automatic processing recommendations. This feedback loop allows the system to learn from user preferences and improve its automatic processing accuracy over time, reducing the need for manual editing while maintaining personalization.

Inventive Principle:
Principle #23Feedback

3Illumination intensity

If front flash view is used for illumination, then image quality in low light is improved, but energy consumption increases

Engineering Contradiction:
Improvefront flash illuminationVSAvoidenergy consumption
Core Design Contradiction:
Illumination intensityVSUse of energy by moving object

Solution Approach 1:

The front flash view operates periodically rather than continuously, activating only when low light conditions are detected and when image capture is required. The system uses ambient light sensors to determine appropriate activation timing, providing sufficient illumination for quality images while minimizing overall energy consumption through intermittent operation.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The system dynamically adjusts the intensity and duration of the front flash illumination based on the captured image's lighting conditions and the user's profile. By changing these parameters adaptively, the system ensures adequate illumination for quality images while reducing energy consumption compared to continuous or high-intensity operation.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP4409925B1Customized image reprocessing system
Publication Date: 2025.10.22 SNAP INC
  • EP4409925B1 patent drawingFigure 1
  • EP4409925B1 patent drawingFigure 2
  • EP4409925B1 patent drawingFigure 3

AI summary

The technical problem of automatically reprocessing an image captured by a camera in a manner that produces a personalized result is addressed by providing a customized image reprocessing system powered by machine learning techniques. The customized image reprocessing system is configured to automatically reprocess an image on a pixel level using a machine learning model that takes, as input, the image represented by pixel values, sensor data detected by the digital sensor of a camera at the time the image was captured, and, also, flash calibration parameters previously generated for that specific user.