Multi-View Video Stabilization Using Segmented Camera Control
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Solution Overview
Problem
Existing electronic devices with multiple cameras struggle to maintain stability in multi-view video recording scenarios, as current image stabilization methods cannot effectively compensate for the unique motion features of different video pictures captured by cameras with varying zoom ratios and distances.
Innovation Solution
A video image stabilization processing method that uses different image stabilization solutions for each camera based on its zoom ratio and distance from the target object, with the front-facing camera stabilizing portraits by cropping around the target object and the rear-facing camera using motion feature compensation, ensuring stability in both the portrait and scenery views.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If an optical image stabilization (OIS) device is built in an electronic device, then picture stability is improved, but device size and costs increase
Solution Approach 1:
The patent divides the image stabilization task into two segments: optical image stabilization for the rear-facing camera and electronic image stabilization for the front-facing camera. This segmentation allows OIS to be applied only where most needed (rear camera for scenery), while using lighter electronic stabilization for the front camera (for portraits), thus reducing overall device complexity while maintaining picture stability
Solution Approach 2:
Different stabilization methods are applied to different cameras based on their specific requirements. The rear-facing camera uses OIS with higher stabilization strength for distant scenery, while the front-facing camera uses electronic stabilization with lower strength for close-up portraits, optimizing performance locally for each camera type
2Device complexity
If a single set of OIS devices is provided for multiple cameras, then device size and costs are reduced, but picture stability for each camera deteriorates
Solution Approach 1:
The patent segments the stabilization resources by allocating OIS specifically to the rear-facing camera while providing electronic stabilization to the front-facing camera. This segmentation ensures that each camera receives appropriate stabilization capabilities without requiring identical hardware for both cameras
Solution Approach 2:
The patent creates a virtual copy of stabilization capability through software-based electronic stabilization for the front camera, complementing the physical OIS hardware in the rear camera. This allows multiple cameras to have stabilization without duplicating expensive OIS hardware
3Device complexity
If existing electronic image stabilization is used for multi-view video recording, then device complexity is reduced, but picture stability for multiple videos deteriorates
Solution Approach 1:
The patent applies different stabilization strengths and methods to different cameras based on their viewing distances and subjects. The rear-facing camera uses stronger OIS for distant scenery while the front-facing camera uses electronic stabilization for close-up portraits, with each camera optimized for its specific stabilization needs
Solution Approach 2:
The patent dynamically adjusts stabilization parameters for each camera based on real-time conditions such as zoom ratio and subject distance. The system adapts the stabilization strength and method dynamically during video recording to maintain optimal picture stability for both cameras simultaneously
Data Source
AI summary
A video image stabilization processing method and an electronic device are provided and related to the field of electronic technologies. The method includes: in a multi-view recording mode, cropping, by using a target object as a center, a video picture captured by a front-facing camera or a video picture with a large zoom ratio, to achieve picture stabilization; and compensating another video picture according to a motion feature of an electronic device, to achieve picture stabilization.