Digital Zoom Image Stabilization With Dynamic Field-of-View Cropping
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Solution Overview
Problem
Current mobile terminals suffer from instability in videos or preview images under digital zoom, leading to blurred images and unsatisfactory user experiences.
Innovation Solution
An image stabilization method and device that dynamically detect shaking conditions, determine the required field of view, and adjust the captured image accordingly to maintain stability, using an anti-shake algorithm to produce a clear output image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If digital zoom is applied to capture distant objects, then the ability to capture distant objects is improved, but image stability deteriorates causing blurred images
Solution Approach 1:
The patent applies dynamics by making the field of view dynamically adjustable based on detected shaking intensity. The system continuously monitors shaking conditions and adapts the cropping region in real-time, transforming a static image processing approach into a dynamic one that responds to changing conditions, thereby maintaining image stability during digital zoom operations
Solution Approach 2:
The patent changes the field of view parameter dynamically according to shaking intensity. By adjusting the cropping region size and position based on detected motion parameters, the system modifies image processing parameters in response to real-time conditions, resolving the contradiction between zoom capability and image stability
2Device complexity
If a fixed field of view is used for image processing, then processing simplicity is improved, but adaptability to different shaking conditions deteriorates
Solution Approach 1:
The system transitions from a static fixed field of view approach to a dynamic adaptive approach where the field of view is continuously adjusted based on shaking detection. This dynamic adaptation enables the system to handle various shaking conditions effectively while maintaining manageable processing complexity through automated detection and adjustment
Data Source
AI summary
An image stabilization method under digital zoom and a mobile terminal. The method includes: obtaining a captured image; detecting a current shaking condition to obtain a shaking intensity; determining a field of view required to maintain image stability according to the shaking intensity; dynamically cropping the captured image according to the field of view to obtain an input image of an anti-shake algorithm; processing the input image of the anti-shake algorithm through the anti-shake algorithm to obtain a stable output image.