Mobile Terminal Light Source Dynamic Intensity Control
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Solution Overview
Problem
The existing soft light function in mobile terminals often results in insufficient lighting for human faces during photography, leading to poor image quality due to preset luminous intensity that may not match the ambient light conditions.
Innovation Solution
A method and device that dynamically adjust the luminous intensity of the light source based on current ambient light intensity, using a correspondence relationship to determine the target intensity and gradually change it according to a preset rule, ensuring the light source emits the appropriate intensity when capturing an image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the luminous intensity of the soft light lamp is set to a preset value, then the device complexity is reduced and ease of operation is improved, but the illumination intensity on the human face is insufficient and image quality deteriorates
Solution Approach 1:
The patent applies dynamics by transitioning from a static preset luminous intensity to a dynamic adjustment mechanism. The control module continuously monitors ambient light intensity through the light sensor and automatically adjusts the soft light lamp's luminous intensity in real-time, making the lighting system adaptive to changing environmental conditions and ensuring optimal face illumination during photography.
Solution Approach 2:
The patent implements feedback by establishing a closed-loop control system. The light sensor detects ambient light intensity and feeds this information back to the control module, which then adjusts the soft light lamp's output accordingly. This feedback mechanism ensures the luminous intensity continuously matches the ambient lighting conditions, resolving the contradiction between simple operation and adequate illumination.
2Illumination intensity
If the luminous intensity of the soft light lamp is increased to improve image quality, then the illumination intensity on the human face is improved, but the device complexity increases due to dynamic adjustment mechanisms
Solution Approach 1:
The patent applies self-service by enabling the soft light lamp system to automatically regulate its own luminous intensity without requiring manual user adjustment. The control module autonomously processes ambient light data from the sensor and adjusts the lamp output accordingly, eliminating the need for complex user interfaces or manual calibration while maintaining optimal illumination.
Solution Approach 2:
The patent implements parameter changes by dynamically modifying the luminous intensity parameter of the soft light lamp based on ambient light conditions. The control module adjusts this key parameter in real-time, allowing the system to adapt to different lighting environments (indoor, outdoor, daytime, nighttime) without requiring complex structural modifications to the device.
3Device complexity
If the soft light lamp uses a fixed preset luminous intensity, then the device complexity is minimized, but the adaptability to different ambient light conditions deteriorates
Solution Approach 1:
The patent applies dynamics by transforming the fixed preset luminous intensity into a dynamic adjustment mechanism. The control module continuously monitors ambient light intensity through the light sensor and automatically adjusts the soft light lamp's luminous intensity in real-time, making the lighting system adaptive to changing environmental conditions and ensuring optimal face illumination during photography.
Solution Approach 2:
The patent implements feedback by establishing a closed-loop control system. The light sensor detects ambient light intensity and feeds this information back to the control module, which then adjusts the soft light lamp's output accordingly. This feedback mechanism ensures the luminous intensity continuously matches the ambient lighting conditions, resolving the contradiction between simple operation and adequate illumination.
Data Source
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AI summary
The present disclosure relates to a method and a device for photographing images. The method and the device are applied to a mobile terminal having a light source. The method includes: obtaining a current ambient light intensity; determining a target luminous intensity according to the current ambient light intensity, in which the target luminous intensity is a luminous intensity of the light source when a photographing operation is performed; controlling the light source to emit light according to the target luminous intensity.