Image Stabilization Crop Ratio Transition for Natural Visual Effect
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Solution Overview
Problem
Image stabilization methods like Digital Image Stabilization (DIS), Electronic Image Stabilization (EIS), and Optical Image Stabilization (OIS) in electronic devices often result in a loss of angle of view and abrupt changes during hand trembling correction, leading to an unnatural visual effect when the angle of view changes.
Innovation Solution
A method for processing images that involves displaying a first image obtained by an image sensor, cropping multiple images in response to changes in the angle of view, and sequentially displaying these crop images to maintain a natural visual effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If image stabilization methods (DIS, EIS, OIS) are used to correct hand trembling, then hand trembling correction is achieved, but abrupt changes in angle of view occur and visual effect becomes unnatural
Solution Approach 1:
The patent divides the angle of view change into multiple discrete steps, cropping a plurality of images at different crop ratios rather than making one abrupt change. This segmentation allows the angle of view to transition gradually through intermediate states, preventing the unnatural visual effect caused by sudden single-step changes.
Solution Approach 2:
The patent implements dynamic adjustment of crop ratios by sequentially displaying multiple cropped images with progressively changing crop ratios. This dynamic approach allows the angle of view to adapt smoothly to hand trembling corrections, maintaining natural visual effect while achieving stabilization.
2Reliability
If crop is applied in image stabilization algorithm, then hand trembling correction is achieved, but loss in angle of view occurs
Solution Approach 1:
The patent applies partial cropping actions by displaying multiple images with different crop ratios rather than applying full crop immediately. This allows the system to achieve hand trembling correction while minimizing the total loss of angle of view by distributing the cropping across multiple sequential frames.
Solution Approach 2:
The patent maintains continuity of the angle of view by sequentially displaying multiple cropped images that progressively adjust the crop ratio. This continuous adjustment ensures that the useful field of view is preserved as much as possible while still achieving the necessary stabilization correction.
Data Source
AI summary
A method for operating an electronic device is provided. The method includes displaying a first image obtained by an image sensor, obtaining a plurality of crop images cropped in response to a change in an angle of view of the image sensor from the first image, and sequentially displaying the plurality of crop images.