Camera Autofocus Correction for Close-Up Hand Vibration
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Solution Overview
Problem
Wide-angle cameras in mobile devices face challenges in close-up photography due to shallow depth of field and hand vibrations causing subjects to deviate from the focus, resulting in blurry images.
Innovation Solution
An electronic apparatus with a camera module and sensor system that detects hand vibrations in the optical-axis direction, calculates correction values, and performs additional focusing operations to maintain the subject within the depth of field during close-up photography.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple applications (camera, messaging, etc.) are operated simultaneously with always-on display, then user convenience is improved, but power consumption increases
Solution Approach 1:
The display operates in different modes (always-on vs. traditional on/off) depending on the application state. When a camera application is active, the display dynamically adjusts its behavior based on whether the camera is in standby or shooting mode, optimizing power consumption while maintaining usability.
Solution Approach 2:
The system changes the display's operational parameters (brightness, refresh rate, or on/off state) based on the camera application's state. When the camera is in standby mode, the display may be turned off or dimmed, while during active shooting, the display transitions to a visible state, thus adjusting power consumption parameters according to actual usage needs.
2Speed
If camera module is always ready for shooting, then shooting speed is improved, but power consumption increases
Solution Approach 1:
The camera module performs preliminary actions by pre-loading settings and maintaining a ready state with essential components activated. This allows the camera to transition to shooting mode rapidly without full initialization, achieving fast shooting speed while consuming less power than a completely always-on system.
Solution Approach 2:
The camera module dynamically adjusts its readiness level based on application state. In standby mode, only essential components remain active for quick activation. When shooting is initiated, the system transitions to full operational mode, optimizing the balance between shooting speed and power consumption.
3Manufacturing precision
If camera module uses large aperture for low light shooting, then image quality is improved, but device thickness increases
Solution Approach 1:
The system changes the aperture parameter dynamically based on lighting conditions. In low light environments, the aperture opens wider to capture more light and improve image quality. In bright conditions, the aperture closes, reducing the need for a large physical aperture structure, thus managing device thickness while maintaining image quality when needed.
Data Source
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AI summary
An electronic apparatus is provided. The electronic apparatus includes at least one camera module including at least one lens, a first sensor configured to detect a motion of the electronic apparatus, and at least one processor configured to perform a first focusing operation of determining a target position of the at least one lens by focusing processing on a subject and moving the at least one lens to the target position, and perform a second focusing operation of, according to a determination that a first condition that a photographing distance, which is a distance to the subject, is less than a distance reference value and a depth-of-field value is less than or equal to a depth reference value is satisfied, additionally driving the at least one lens based on a calculated focusing correction value for compensating a motion.