Auto-Focusing Device Using Sensor Data for Target Tracking
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Solution Overview
Problem
Users experience poor shooting experiences due to tedious manual-focusing operations when the viewfinder is moved after initial focusing, causing deviations between the focal point and the intended target in camera-equipped intelligent terminals.
Innovation Solution
An auto-focusing method that acquires spatial data of the target object after initial manual focusing, calculates adjustments based on sensor data from acceleration and direction sensors to maintain focus on the target as the viewfinder moves, and adjusts the lens position to maintain image clarity without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual-focusing is used to focus on a target object, then focusing precision is achieved, but operation complexity increases and user experience deteriorates when the viewfinder moves
Solution Approach 1:
The system performs self-service by automatically calculating the new focal point position based on viewfinder movement data and automatically adjusting the lens to maintain focus on the target object, eliminating the need for user intervention after initial manual focusing
Solution Approach 2:
The system uses feedback from acceleration sensors and direction sensors to detect viewfinder movement, calculates the deviation of the focal point from the target object, and adjusts the lens accordingly to maintain proper focus
2Speed
If the camera automatically focuses to the center of the viewfinder after manual-focusing, then focusing speed is improved, but focusing precision deteriorates due to deviation from the original target
Solution Approach 1:
The system incorporates feedback from sensors to detect viewfinder movement and calculates the new position of the target object, enabling the camera to automatically refocus precisely on the target rather than simply to the center
Solution Approach 2:
The system performs preliminary calculations of the target object's new position based on viewfinder movement data before executing the refocusing operation, ensuring both speed and precision are achieved
3Measurement precision
If repeated manual-focusing operations are performed to maintain focus on the target, then focusing precision is maintained, but time consumption increases and productivity decreases
Solution Approach 1:
The system automatically maintains focus on the target object by detecting viewfinder movement and adjusting the lens without requiring repeated user operations, significantly improving shooting efficiency
Solution Approach 2:
The system continuously monitors viewfinder movement through sensors and continuously adjusts the lens position to maintain focus, ensuring uninterrupted focusing precision throughout the shooting process
Data Source
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AI summary
The present invention relates to an auto-focusing method and an auto-focusing device. The method includes: when manual-focusing is finished through tapping a target object in a viewfinder by a user, acquiring (101) first spatial data of the target object; when detecting that contents of a found view in the viewfinder change, acquiring (102) position variation data; calculating (103) second spatial data of the target object according to the first spatial data and the position variation data; and performing (104) auto-focusing on the target object according to the second spatial data. Thus, the present invention may avoid manual-focusing operations when the contents of the found view change, simplify the focusing operation flows, increase the focusing speed, and accordingly improve the shooting experience of the user.