Screen illumination distribution reconstruction method and system, and display device

By arranging a sensor array at the edge of the display panel and combining encoded display state switching and optical response data, a physical response model and a system model are constructed, solving the problem of accurate reconstruction of screen illumination distribution and achieving high-quality display effects in complex lighting environments.

CN121922087APending Publication Date: 2026-04-24HEFEI UNIV OF TECH
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Patent Information

Application Number
CN202610133893.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-30
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Existing technologies struggle to accurately reconstruct the two-dimensional illumination distribution of a screen without occupying display area or relying on a front-facing camera. In particular, they cannot effectively overcome reconstruction errors caused by low signal-to-noise ratio and model mismatch in complex lighting environments.

Method used

By arranging a sensor array at the edge of the display panel, and using the combination processing of encoded display state switching and optical response data, a physical response model and a system model are constructed. Combined with a spatial constraint optimization algorithm, the two-dimensional illumination distribution on the screen surface is reconstructed, and the brightness of each zone is adjusted.

Benefits of technology

It achieves accurate reconstruction of screen illumination distribution without occupying display area or relying on the front camera, thus improving display effect, enhancing visual contrast and outdoor visibility.

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Abstract

The invention discloses a screen illumination distribution reconstruction method and system and a display device. A display area of a display panel is used as an active coding spatial light modulator, an ambient light sensor array is arranged at the edge of a screen, a preset positive coding pattern and negative coding pattern sequence is displayed in sequence, edge sensor signals are collected, and a measurement vector is generated. According to the method, a physical response matrix and a system matrix for describing a light transmission relation from each display partition to a sensor are constructed, light transmission efficiency differences are comprehensively considered, and a two-dimensional environment illumination distribution diagram of the surface of a screen is reconstructed from edge measurement data; for the display device with the partition brightness adjusting function, the target brightness compensation amount on the brightness control unit can be calculated according to the reconstruction result and the optical characteristics of the display panel. On the premise of not occupying a display area and not increasing a front-facing camera, high-precision and non-intrusive reconstruction of screen illumination distribution is realized, and the method can be used for adaptive brightness control of a display and other outdoor display equipment.
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