Screen Sub-Region Light Filling for Front-Camera Imaging
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Solution Overview
Problem
The quality of image shooting using a front camera is affected by ambient brightness variability, and existing solutions like front flashes or screen brightness adjustments are inadequate, leading to unsatisfactory imaging quality.
Innovation Solution
A photographing light-filling method that divides the real-time preview image and screen into sub-regions, determining and adjusting light-emitting brightness for each sub-region based on real-time brightness information, using depth maps and posture information to enhance illumination accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a front flash or screen brightness adjustment is used to improve lighting for front-camera shooting, then the brightness of the shooting scene is improved, but the lighting is single and limited, resulting in unsatisfactory imaging quality
Solution Approach 1:
The patent divides the screen into multiple sub-regions (first sub-region, second sub-region, etc.) that can be independently controlled for brightness adjustment. Each sub-region corresponds to a specific area in the preview image, allowing differentiated lighting control across different parts of the shooting scene, thereby achieving more precise and effective illumination without the limitations of single-source lighting.
Solution Approach 2:
The patent applies different brightness levels to different sub-regions of the screen based on the lighting requirements of corresponding areas in the preview image. By adjusting the brightness of each sub-region independently according to local lighting needs, the system achieves more accurate and natural lighting effects, improving overall imaging quality while avoiding the uniform and limited lighting approach of traditional methods.
2Illumination intensity
If the screen brightness is increased to provide more light for front-camera shooting, then the illumination of the shooting scene is improved, but the energy consumption increases
Solution Approach 1:
The patent segments the screen brightness control into multiple independent sub-regions, allowing the system to illuminate only the specific areas that need lighting support. This localized approach ensures that energy is consumed only where necessary, rather than uniformly increasing the brightness of the entire screen, thereby reducing overall energy consumption while still achieving effective lighting for the shooting scene.
Solution Approach 2:
The patent applies brightness adjustment selectively to only those sub-regions that require additional illumination, rather than uniformly increasing the brightness of the entire screen. This partial action approach provides sufficient lighting for the shooting areas while minimizing unnecessary energy consumption in regions that already have adequate lighting.
3Manufacturing precision
If the screen is divided into multiple sub-regions for precise brightness control, then the imaging quality is improved, but the device complexity increases
Solution Approach 1:
The patent makes the existing screen serve multiple functions: it acts as both the display device for showing the preview image and the lighting source for illuminating the shooting scene. By utilizing the screen's inherent light-emitting capability for both display and illumination purposes, the system achieves precise brightness control without requiring additional dedicated lighting components, thereby managing complexity effectively.
Solution Approach 2:
The patent enables the screen to illuminate the shooting scene using its own emitted light, without requiring external flash or additional lighting devices. The screen serves itself by providing the necessary illumination for front-camera shooting, which simplifies the overall system architecture while achieving precise brightness control through regional brightness adjustment.
Data Source
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AI summary
Disclosed in the embodiments of the present application are a photographing light-filling method and apparatus, and an electronic device and a computer-readable storage medium. In the method, a screen is divided into a plurality of sub-regions, and a different light emission brightness is provided for each sub-region, thereby improving the accuracy of brightness provision, realizing differentiated brightness compensation for each sub-region, and improving the overall visual effect and quality of imaging.