Dual-Camera Imaging Switching for Low-Light Depth Accuracy
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Solution Overview
Problem
Dual-camera systems in mobile terminals exhibit poor imaging performance in low-light environments due to inadequate matching of camera performance with ambient luminance.
Innovation Solution
A method where the main and auxiliary cameras are dynamically determined based on ambient luminance, with the camera having higher sensitivity used as the main camera in low light and higher resolution used in bright conditions, and depth information is calculated using images from both cameras to enhance image processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the first camera (higher resolution) is used as the main camera in high-luminance environments, then the imaging quality is improved, but the imaging effect deteriorates in low-luminance environments
Solution Approach 1:
The patent implements dynamic switching between the first and second cameras based on ambient luminance detection. The system transitions from a static camera assignment to a dynamic selection mechanism that adapts to changing lighting conditions, ensuring optimal imaging quality across different luminance environments
Solution Approach 2:
The patent changes the operating parameter (camera selection) based on the ambient luminance parameter. By detecting luminance levels and switching between cameras with different resolution and sensitivity characteristics, the system optimizes imaging performance for the current lighting conditions
2Adaptability or versatility
If the second camera (higher sensitivity) is used as the main camera in low-luminance environments, then the imaging effect is improved, but the depth information calculation accuracy deteriorates
Solution Approach 1:
The patent segments the imaging function into two distinct roles: the main camera captures the primary image, while the auxiliary camera specifically captures depth information. This segmentation allows each camera to operate in its optimal performance range, with the auxiliary camera providing reliable depth data regardless of luminance conditions
3Device complexity
If fixed camera roles are assigned in dual-camera systems, then the device complexity is reduced, but the imaging performance in varying luminance conditions deteriorates
Solution Approach 1:
The patent introduces dynamic role assignment where the main and auxiliary camera roles are determined based on real-time luminance detection. This dynamic approach maintains relatively simple device architecture while significantly improving imaging performance consistency across different lighting conditions
Data Source
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AI summary
A method and device for dual-camera-based imaging are provided, wherein the method includes that: after ambient luminance is determined, a main camera and auxiliary camera are determined from in dual cameras according to the ambient luminance, the main camera is used to shoot a first image, the auxiliary image is used to shoot a second image, a third image is generated according to the first image, depth information of the third image is calculated according to the first image and the second image, and blurring processing is further performed on the third image according to the depth information of the third image to obtain a fourth image.