Dual-Camera Focus Prediction for Moving Object Entry
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Solution Overview
Problem
Inaccurate focusing occurs when a moving object suddenly enters the frame during image capture, leading to unclear photographs or video recordings using mobile terminals.
Innovation Solution
A method and apparatus that acquires relative motion information between a target object and a terminal device, determines focusing information based on this information, and adjusts the focus of a second camera when the object enters a specific region to ensure accurate focusing and clear photography.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the camera uses a fixed photographing region (third photographing region) for focusing, then the focusing structure is simple, but when a moving object enters from outside this region, the focusing accuracy deteriorates
Solution Approach 1:
The photographing region is segmented into a first photographing region (where the moving object is initially detected) and a third photographing region (the main focusing region). This segmentation allows the system to track objects as they move between regions and maintain focusing accuracy by predicting when objects will enter the third region, rather than requiring a single large fixed region.
Solution Approach 2:
The system performs preliminary detection in the first photographing region to identify moving objects before they enter the third photographing region. By acquiring relative motion information in advance and predicting entry timing, the system prepares for accurate focusing before the object actually enters the main focusing region, resolving the contradiction between region size and focusing accuracy.
2Reliability
If the camera continuously monitors all areas for moving objects, then the detection coverage is comprehensive, but the response time for focusing deteriorates due to processing delays
Solution Approach 1:
The system performs preliminary detection and tracking in the first photographing region, acquiring relative motion information in advance. This allows the system to predict when objects will enter the third photographing region and prepare focusing parameters beforehand, significantly reducing the actual focusing response time when objects enter the main focusing region.
Solution Approach 2:
The system dynamically tracks moving objects by continuously monitoring their position and calculating relative motion information. This dynamic tracking approach allows the system to adapt to object movement and maintain reliable detection without requiring exhaustive continuous scanning of all areas, thus reducing processing delays.
3Area of stationary object
If the camera uses multiple cameras for wide coverage, then the photographing coverage is comprehensive, but the system complexity and cost increase
Solution Approach 1:
The photographing system is segmented into a first camera for wide-angle detection in the first photographing region and a second camera for detailed focusing in the third photographing region. This segmentation allows comprehensive coverage while maintaining manageable system complexity, as each camera is optimized for its specific function rather than requiring a single complex system to handle all tasks.
Solution Approach 2:
The first camera serves multiple functions: it acts as both a detection device for identifying moving objects and a tracking device for monitoring their motion. This multi-functionality reduces the need for additional specialized components, thereby controlling system complexity while achieving comprehensive photographing coverage through coordinated operation with the second camera.
Data Source
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AI summary
The present disclosure provides a photographing method and apparatus, and a storage medium, and relates to the field of photographing technologies. The photographing method includes: in a case where a target object is detected to be included in a first photographing region, acquiring (101) relative motion information between the target object and a terminal device, in which a photographing region corresponding to a first camera in the terminal device is a second photographing region, a photographing region corresponding to a second camera is a third photographing region, and the first photographing region is a region in the second photographing region other than the third photographing region; according to the relative motion information, obtaining (102) focusing information when the target object enters the third photographing region; and performing (103) focusing on the target object based on the focusing information when the target object enters the third photographing region.