Display Luminance Adjustment via Front Camera Image Analysis
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Solution Overview
Problem
Conventional display systems struggle to accurately compensate for veiling glare caused by ambient light, which reduces contrast and clarity of displayed content, particularly in vehicles where ambient light conditions can vary significantly, and existing solutions involve additional and potentially inaccurate light sensors.
Innovation Solution
A system comprising a display unit, a capturing unit to image the front view, and a computing unit that determines target regions based on weightage and adjusts luminance parameters such as brightness, contrast, and color to compensate for ambient light effects, using image processing techniques rather than light sensors, thereby improving accuracy and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ambient light sensors are added to compensate for veiling glare, then display visibility is improved, but device complexity and cost increase
Solution Approach 1:
The display system uses its existing front-facing camera to capture images and analyze ambient light conditions affecting the user's eye. The system processes the captured image data itself to determine light intensity and adjust display parameters, eliminating the need for separate ambient light sensors while maintaining compensation functionality
Solution Approach 2:
The front-facing camera, originally designed for other purposes (such as user identification or monitoring), is repurposed to also function as an ambient light measurement device. By analyzing the captured images for light intensity information, the system makes the existing camera serve multiple functions, reducing overall device complexity
2Device complexity
If ambient light sensors are placed at a distance from the user, then device structure is simplified, but measurement precision deteriorates
Solution Approach 1:
The system uses the front-facing camera positioned close to the user's eye to capture images that directly reflect the ambient light conditions affecting the user. This self-service approach ensures high measurement precision by using the same viewpoint that experiences the veiling glare, while the camera's integration into the device maintains structural simplicity
Solution Approach 2:
The system focuses light measurement analysis specifically on regions of the captured image corresponding to the user's eye and surrounding areas. By applying local quality assessment to specific image regions rather than treating the entire image uniformly, the system achieves high measurement precision for ambient light conditions while using a single integrated camera component
3Reliability
If display brightness is increased to compensate for veiling glare, then content visibility is improved, but energy consumption increases
Solution Approach 1:
The system dynamically adjusts display parameters including brightness, contrast, and color based on real-time analysis of ambient light conditions captured by the front-facing camera. This dynamic adaptation allows the display to maintain optimal visibility in varying lighting conditions while consuming only the necessary amount of energy, avoiding continuous high power consumption
Solution Approach 2:
The system changes multiple display parameters simultaneously (brightness, contrast, color) based on the analyzed ambient light intensity. By adjusting the combination of these parameters rather than solely increasing brightness, the system achieves effective veiling glare compensation while optimizing energy consumption through balanced parameter modification
Data Source
AI summary
The present disclosure relates to a system for adjusting a level of luminance of a display unit. The system comprises a display unit to display content. Further, the system comprises a capturing unit to capture image of front view of the display unit. Furthermore, the system comprises a computing unit. The computing unit is configured to receive the image from the capturing unit. Further, the computing unit is configured to determine one or more target regions from plurality of regions in the image. The one or more target regions are determined based on weightage assigned to each of the plurality of regions. Furthermore, the computing unit determines effects of light incident on the one or more target regions. Thereafter, the computing unit adjusts the display of the content based on the effects of light.