Camera Preview Ratio Adjustment for Automatic Framing
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Solution Overview
Problem
Users of electronic devices with camera capabilities face inconvenience in manually adjusting the capturing range, which is not convenient for capturing photos.
Innovation Solution
An electronic device with a capturing system that includes modules for recognizing the capturing target, calculating the preview ratio, and automatically adjusting the camera's capturing range to match the average ratio of predefined categories, ensuring optimal framing for photo capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the user manually adjusts the capturing range, then the capturing precision can be controlled, but the ease of operation deteriorates
Solution Approach 1:
The system performs automatic capturing range adjustment by itself without requiring user operation. The electronic device automatically identifies the capturing target, calculates the preview ratio, compares it with the average ratio, and adjusts the capturing range autonomously, making the system serve itself rather than requiring manual user intervention for each adjustment
Solution Approach 2:
The system changes the capturing range parameter automatically based on the calculated preview ratio. By dynamically adjusting the capturing range parameter to match the average ratio of the identified category, the system achieves precise capturing without requiring manual user adjustment, thus resolving the contradiction between precision and ease of operation
2Measurement precision
If the capturing range is manually adjusted, then the framing accuracy can be improved, but the time consumption increases
Solution Approach 1:
The system pre-calculates the average ratio for different capturing target categories and stores them for reference. When a capturing target is identified, the system immediately retrieves the corresponding average ratio and adjusts the capturing range accordingly, eliminating the need for time-consuming manual trial-and-error adjustment while achieving accurate framing
Solution Approach 2:
The system implements a feedback mechanism by calculating the preview ratio, comparing it with the stored average ratio, and automatically adjusting the capturing range based on the comparison result. This closed-loop feedback process enables rapid and accurate framing adjustment without manual intervention, reducing time consumption while maintaining high framing accuracy
Data Source
AI summary
A photo capturing method includes recognizing a capturing target of a preview image of a camera device. A preview ratio of the preview image is obtained by calculating a ratio between an area of a smallest rectangle enclosing the capturing target in the preview image and an area of the preview image is calculated. A category that the preview image belongs to is determined according to the capturing target. An average ratio of the determined category is obtained. Once the preview ratio is not equal to the average ratio of the determined category, a capturing range of the camera device is adjusted.