Multi-Camera Zoom Adjustment for Object-Focused Image Quality
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Solution Overview
Problem
Existing electronic devices with multiple cameras struggle to efficiently adjust zoom magnification based on user input and object region, leading to suboptimal image composition and quality.
Innovation Solution
An electronic device with a first camera capable of optical zoom and a second camera with a wider field of view, utilizing processors to identify an object region, determine zoom magnifications based on reference ratios, and adjust optical and digital zoom to maintain desired image composition and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If digital zoom is applied to acquire an image having a magnification different from that of an image acquired through a camera, then the electronic device can provide various magnification options, but the image quality deteriorates
Solution Approach 1:
The system dynamically switches between digital zoom and optical zoom based on the desired magnification level. When digital zoom is applied beyond a certain threshold, the system activates optical zoom to maintain image quality while providing continuous magnification adjustment capability.
Solution Approach 2:
The optical system acts as an intermediary between the camera sensor and the final image output. By introducing this intermediate optical magnification stage, the system can achieve high-quality zoomed images without relying solely on digital cropping and enlargement.
2Manufacturing precision
If continuous optical zoom function is used to adjust focal length by moving a lens, then image quality is improved, but the device complexity increases
Solution Approach 1:
The zoom system is segmented into discrete focal length ranges, each handled by a specific optical configuration. This allows the complex optical zoom function to be divided into manageable segments, reducing the overall complexity while maintaining continuous zoom capability across different ranges.
Solution Approach 2:
The optical system is designed to perform multiple functions: it can operate in a first zoom range for normal imaging and switch to a second zoom range for extended magnification. This multi-functionality allows a single optical system to replace what would otherwise require multiple separate camera modules.
3Adaptability or versatility
If the electronic device includes multiple camera modules with different field of view, then the adaptability for different shooting scenarios is improved, but the device complexity increases
Solution Approach 1:
A single camera module is designed with a movable optical system that can adjust its field of view to cover multiple shooting scenarios. This multi-functional optical system replaces multiple dedicated camera modules, achieving ultra-wide-angle, wide-angle, and telephoto capabilities through optical movement rather than hardware multiplication.
Solution Approach 2:
The optical system dynamically adjusts its focal length and field of view based on the required shooting scenario. This dynamic adaptability allows one camera module to perform the functions of multiple static camera modules with different fixed fields of view.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances image quality and composition by dynamically adjusting zoom magnification to match user input and object region, providing improved preview and capture capabilities.
Implementation Method 1
The electronic device may adjust a size of an image formed on an image sensor of a camera by refracting light reflected from the subject through the continuous optical zoom function
Data Source
AI summary
An electronic device including a display, a first camera, a second camera, at least one processor and memory storing computer-executable instructions, when being executed by the at least one processor individually or collectively, causes the electronic device to identify an object region in a first image captured by the second camera; determine a first zoom magnification based on an area of the object region and at least one pre-set reference ratio; display, through the display, a preview screen comprising a second image scaled from at least part of the first image based on the first zoom magnification; receive a user input for the second image; and drive a zoom operation of the first camera such that a zoom magnification of the first camera is adjusted based on a second zoom magnification determined based on the user input.