Auto-Framing Functionality Overview
Auto Framing is an intelligent camera function designed to keep a detected target centered within the frame automatically. By analyzing the target’s position and size, the camera will dynamically zoom in or out to ensure the target remains clear, visible, and well-composed, which is similar to how a photographer would adjust a shot.
How It Works:
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Utilizes AI-powered image detection, multi-lens coordination, and precise PTZ gimbal control.
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Automatically tracks the target and adjusts framing in real time.
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Requires AI Tracking to be enabled. Please be aware that Auto Framing cannot function independently.
Integrated Bullet-to-PTZ Tracking: Operation and Principles
The eufyCam S4 features integrated bullet and PTZ tracking, combining a wide-angle bullet camera with a precision-controlled PTZ camera in one device.
How It Works:
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The bullet camera detects a moving target and analyzes its position and movement trend.
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Using factory-calibrated internal mapping, the camera translates the target’s position in the bullet camera’s field of view into corresponding PTZ gimbal angles.
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The PTZ camera then rotates to that position and activates AI Tracking and Auto Framing, seamlessly continuing to follow the target.
Key Technologies:
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Pixel-to-angle mapping via internal calibration.
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Real-time synchronization between bullet and PTZ modules.
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Smooth motorized handoff for uninterrupted tracking.
Tracking Response Time and Dual-Use Scenarios
The response time for the Bullet-to-PTZ tracking handoff depends on the relative positioning of the bullet and PTZ cameras.
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Maximum PTZ rotation speed: 360° in approximately 4 seconds.
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Typical tracking handoff rotation time: Up to 2.5 seconds.
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After PTZ repositioning, AI detection begins to lock onto the target.
Important Considerations:
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If the target exits the bullet camera’s view or is obstructed before the PTZ lock-on, tracking may fail.
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Dual-use setups (e.g., bullet facing front yard, PTZ facing side yard) can increase the rotation angle and therefore the response time.
Multi-Target Detection and Tracking Priority
The eufyCam S4 supports simultaneous detection of up to 5 targets within a single frame.
Tracking Priority
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Proximity-Based Priority:
The system prioritizes tracking the closest target (larger visual size = higher priority). -
Object Type Priority:
Tracking order: Person > Vehicle > Pet.
Zoom Behavior
The system dynamically adjusts zoom to keep multiple targets in frame, avoiding overly tight framing on a single target when others are nearby.
Limitations When Tracking Targets Directly Below the Camera
Why tracking may fail:
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Mechanical Constraint:
The PTZ gimbal does not support a full 90° downward tilt. When a target walks directly underneath, the gimbal moves in an arc, which may result in brief target loss. -
AI Detection Challenge:
From directly overhead, the camera may only see the top of the person’s head, making recognition more difficult.
Installation Recommendations:
Install the camera in locations where people cannot walk directly beneath it to minimize the likelihood of vertical blind spot, such as:
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Above fences
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Over flower beds or planters
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Near walls or ponds
What happens when a tracked target leaves the frame?
When a tracked target exits the frame:
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The camera waits up to 2 seconds to confirm the target is lost.
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If no target is detected, the camera performs a scene scan for new motion.
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If a new target is detected, the camera will switch to it.
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When no new target is found and the camera is zoomed in, it will automatically return to 1× zoom and resume standard monitoring.
How does zoom behavior adapt to different target sizes?
The zoom function in Auto Framing is size-adaptive:
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Smaller targets are zoomed in more aggressively to maintain visibility.
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The camera supports up to 5× digital zoom.
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Zoom is dynamically adjusted based on real-time target size and position within the frame.
If you have any other questions regarding the eufyCam S4, please don't hesitate to contact us for assistance.
