Dynamic Camera Zoom for Gesture Scale Adaptation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing motion-capture systems struggle to accurately track and interpret gestures that rapidly change in scale, as they often fail to adjust their camera settings quickly enough to capture both large and small motions effectively.
Innovation Solution
The system adjusts the monitored field of view and virtual scene perspective based on the distance between tracked objects, allowing the camera to zoom in or out and reorient to keep the objects centered, thereby improving the capture of gestures with varying scales.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the camera is zoomed out to capture large gestures, then the field of view is sufficient for large motions, but the system cannot capture subtleties of small gestures
Solution Approach 1:
The patent implements dynamic zoom adjustment where the camera automatically transitions between zoomed-out and zoomed-in states based on detected gesture size. The system monitors the spatial extent of hand movements and adjusts the camera focal length accordingly, allowing the field of view to adapt from wide (for large gestures) to narrow (for small gestures), thereby resolving the contradiction between coverage area and measurement precision.
Solution Approach 2:
The system changes the camera's optical parameters (focal length, zoom level) in response to detected gesture characteristics. When small gestures are detected, the camera increases its zoom level to enhance detail capture; when large gestures are detected, the camera decreases zoom to maintain broad coverage. This parameter adaptation allows the system to optimize both field of view and precision for different gesture scales.
2Measurement precision
If the camera is zoomed in to capture small gestures, then gesture subtleties are captured, but larger motions that stray outside the field of view are missed
Solution Approach 1:
The camera system dynamically adjusts its zoom level based on real-time detection of gesture scale. When large motions are detected, the system automatically zooms out to expand the field of view and capture the full range of movement. When small gestures are detected, the system zooms in to capture fine details. This dynamic adaptation eliminates the trade-off between precision and coverage.
Solution Approach 2:
The system performs self-adjustment by autonomously monitoring gesture characteristics and automatically modifying camera parameters without user intervention. The gesture recognition system analyzes movement magnitude and triggers appropriate camera zoom levels, allowing the system to serve itself in optimizing capture parameters for different gesture types.
3Ease of operation
If the camera uses a fixed zoom level, then the system is simple to operate, but it cannot react quickly enough to gestures that rapidly change in scale
Solution Approach 1:
The camera system operates autonomously by automatically adjusting zoom levels based on detected gesture scale without requiring manual user control. The system monitors hand movement characteristics and self-regulates focal length, eliminating the need for users to manually adjust camera settings while maintaining adaptability to varying gesture sizes.
Solution Approach 2:
The system implements a feedback loop where gesture detection continuously monitors hand movement characteristics and feeds this information back to the camera control system. Based on this feedback, the camera automatically adjusts zoom levels to match the current gesture scale, enabling rapid adaptation to changing gesture sizes while maintaining operational simplicity.
Data Source
AI summary
The technology disclosed relates to adjusting the monitored field of view of a camera and/or a view of a virtual scene from a point of view of a virtual camera based on the distance between tracked objects. For example, if the user's hand is being tracked for gestures, the closer the hand gets to another object, the tighter the frame can become—i.e., the more the camera can zoom in so that the hand and the other object occupy most of the frame. The camera can also be reoriented so that the hand and the other object remain in the center of the field of view. The distance between two objects in a camera's field of view can be determined and a parameter adjusted based thereon. In particular, the pan and/or zoom levels of the camera may be adjusted in accordance with the distance.