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Samsung patents method to keep colors consistent across different cameras

Patent drawing
Patent drawing from the official filing.

This filing describes a way to make photos look the same color regardless of which camera on a device takes them. It uses a neural network to analyze the image and adjust for lighting conditions based on specific settings for each camera lens.

Why it mattersIt could help ensure that photos taken with a phone's wide-angle, telephoto, or main camera all match in color, improving the quality of multi-camera shots.

In the filing’s own words

An electronic device may receive a raw image from a camera and color correction matrices (CCMs) including a first CCM corresponding to a first correlated color temperature and a second CCM corresponding to a second correlated color temperature; generate a camera fingerprint embedding (CFE) by transforming predefined illuminant chromaticities from a device-independent color space into a raw RGB color space of the camera using interpolation between the CCMs, and encoding the transformed illuminant chromaticities into a CFE vector; convert the raw image into a histogram representation using log-chroma mapping; concatenate the CFE vector with the histogram representation to form a combined feature representation; and estimate an illuminant color in the raw RGB color space of the camera through an illuminant estimation neural network model based on the combined feature representation.

What exactly they claim (claim 1)

1. An electronic device comprising: a memory storing instructions; and at least one processor configured to execute the instructions to: receive a raw image from a camera and color correction matrices (CCMs) including a first CCM corresponding to a first correlated color temperature and a second CCM corresponding to a second correlated color temperature; generate a camera fingerprint embedding (CFE) by transforming predefined illuminant chromaticities from a device-independent color space into a raw RGB color space of the camera using interpolation between the CCMs, and encoding the transformed illuminant chromaticities into a CFE vector; convert the raw image into a histogram representation using log-chroma mapping; concatenate the CFE vector with the histogram representation to form a combined feature representation; and estimate an illuminant color in the raw RGB color space of the camera through an illuminant estimation neural network model based on the combined feature representation.

Facts

Company
Samsung (SAMSUNG ELECTRONICS CO., LTD.)
Official title
CROSS-CAMERA COLOR CONSTANCY USING CALIBRATED COLOR CORRECTION MATRICES
Publication number
US20260301226A1
Application number
19576895
Filed
Mar 24, 2026
Published
Oct 1, 2026
Inventors
5
Claims
20

Classified under

G06T 7/80 Physics & computingG06T 5/40 Physics & computingG06T 5/60 Physics & computingG06T 5/73 Physics & computingG06T 7/90 Physics & computingG06T 11/10 Physics & computing
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.