LED Display Brightness Control via Luminance Mapping
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Solution Overview
Problem
LED display screens experience a decline in brightness over time, affecting their display effect and usability, especially for outdoor screens which already have insufficient brightness due to limitations in display apparatuses, causing inconvenience to users.
Innovation Solution
An image display control method and system that performs luminance-component mapping on input images, converts them to a primary color space, and applies filtering to enhance brightness and contrast, balancing image brightness and contrast without losing grayscale, thereby extending the display screen's lifespan and improving user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the display screen is used for a long time, then the service life is extended, but the display brightness drops
Solution Approach 1:
The patent applies luminance-component mapping and filtering processing to the input image before it is displayed. This preliminary enhancement of the image's luminance components compensates for the brightness drop that will occur due to screen aging, allowing the screen to maintain acceptable display quality over an extended service life without requiring physical replacement or recalibration
2Illumination intensity
If the brightness of outdoor display screens is increased, then the display effect is improved, but the hardware limitations cause insufficient brightness
Solution Approach 1:
The patent transforms the image data from a luminance-chrominance separation color space to a primary color space, and applies luminance-component mapping that modifies the luminance parameters of pixel data. This parameter transformation allows standard LED display hardware to achieve enhanced brightness performance through software-based image processing rather than requiring hardware upgrades
Solution Approach 2:
The patent replaces the need for hardware-based brightness enhancement (such as higher-power LEDs or additional lighting) with a software-based image processing approach. By applying luminance-component mapping and filtering in the digital domain, the system achieves brightness improvement without modifying the physical display hardware
3Illumination intensity
If brightness enhancement processing is applied to images, then the display brightness is improved, but the grayscale information may be lost
Solution Approach 1:
The patent applies filtering selectively to enhance detail contrast in specific regions of the image while preserving grayscale information in other areas. The luminance-component mapping is designed to enhance perceived brightness through selective adjustment of luminance components rather than uniform brightness increase, maintaining grayscale relationships while improving overall display brightness
Data Source
AI summary
The application relates to an image display control method and a display screen control system. The method includes: receiving an input image; performing luminance component mapping on target pixel data of the input image; converting the target pixel data after mapping from a luminance-chrominance separation color space to a primary color space; performing filtering on the target pixel data which are converted to the primary color space after mapping; and outputting the target pixel data after filtering to a display screen for image display.