Camera Preview Zoom Control for Multiple Moving Objects
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Solution Overview
Problem
Existing portable terminals struggle to adjust zoom magnification and the location of a preview image effectively when multiple objects are in motion, leading to shaking and inconvenience for users.
Innovation Solution
An electronic device and method that detects multiple objects within its field of view, adjusts the location and zoom magnification of a preview image accordingly, and displays a smooth transition by tracking the objects' motions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the portable terminal tracks a single object by adjusting preview image location and zoom magnification, then the preview image remains stable on the object, but the system cannot adapt when multiple objects are present or when objects change positions
Solution Approach 1:
The system dynamically adjusts the number of tracked objects based on detection results. When multiple objects are detected, the system transitions from single-object tracking to multi-object tracking, automatically adapting the tracking configuration to match the scene complexity without requiring manual intervention or increasing system complexity
Solution Approach 2:
The object detection unit automatically identifies and provides object location information to the control unit, which then self-adjusts the preview image parameters (location and zoom magnification) based on the detected objects. The system serves itself by using its own detection capabilities to control its display output, eliminating the need for external control mechanisms
2Measurement precision
If the preview image zooms in to capture detailed views of objects, then the detail visibility improves, but the field of view narrows and may exclude other important objects
Solution Approach 1:
The system applies different zoom magnification levels to different regions of interest within the preview image. When multiple objects are detected, the system can maintain higher zoom levels for primary objects while providing contextual visibility of secondary objects at appropriate magnification levels, allowing detailed viewing without completely excluding other important elements
Solution Approach 2:
The system resolves the field of view limitation by transitioning between different dimensional representations - using variable zoom magnification to switch between close-up detailed views and wider contextual views. This dimensional adjustment allows the system to prioritize object details while maintaining awareness of the broader scene composition
3Measurement precision
If the portable terminal manually tracks objects by requiring user movement, then the tracking accuracy improves, but the user experience deteriorates when objects move quickly or unexpectedly
Solution Approach 1:
The system continuously receives feedback from the object detection unit about object positions and movements. Based on this real-time feedback, the control unit automatically adjusts the preview image location and zoom magnification to maintain accurate tracking of moving objects, eliminating the need for manual user adjustment while preserving tracking precision
Solution Approach 2:
The system replaces the mechanical manual adjustment mechanism (user physically moving the device) with an automated electronic control system. The control unit uses detection data to electronically adjust the preview image parameters, substituting manual mechanical operation with automated electronic control that responds instantly to object movement
Data Source
AI summary
At least one processor included in an electronic device may: execute a camera; detect a first object within a field of view (FOV) of the camera; display a first preview image based on a first region of interest (ROI) including the first object on a display at a first magnification; additionally detect a second object within the FOV while the first preview image is displayed on the display; and display a second preview image based on a second ROI including the first object and the second object on the display at a second magnification different from the first magnification.