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Perception-based halo visibility model for mini-LED backlit LCDs
Optics Express
|August 14, 2026
Summary
Researchers developed a new halo visibility model for mini-LED displays. This model accurately quantifies halo effects, improving display quality and enabling standardized evaluations.
Area of Science:
- Display Technology
- Human Visual System (HVS)
- Image Quality Assessment
Background:
- Mini-LED local-dimming LCDs offer high-dynamic-range (HDR) but suffer from halo effects.
- Quantifying halo visibility is challenging due to low luminance and optical interference.
Purpose of the Study:
- To propose a novel halo visibility model for mini-LED displays grounded in the HVS.
- To establish a perception-consistent objective metric for halo evaluation.
Main Methods:
- Developed a new measurement technique for 2D halo luminance distributions.
- Created a perceptual halo-boundary model to define the halo area.
- Defined a halo visibility index (HVI) based on perceived contrast and FOV.
Main Results:
- Achieved a strong correlation (R²=0.96) between the proposed HVI and subjective evaluations.
- Quantified the impact of contrast ratio, backlight units, and viewing distance on HVI.
- Demonstrated the model's effectiveness in perception-consistent halo assessment.
Conclusions:
- The proposed HVI provides a reliable objective measure for halo visibility in mini-LED displays.
- This method facilitates standardized evaluation and guides halo suppression techniques.
- The study advances the understanding of visual perception in HDR display technology.
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