Automated Camera Focus Control via 3D Sensor Data
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Solution Overview
Problem
Current camera focus adjustment methods are time-consuming, prone to error, and impose creative and financial constraints due to the complexity of manual focus pulling, especially in situations requiring precise focus on moving subjects with long focal lengths and wide apertures, and existing semi-automatic systems lack the necessary accuracy and flexibility.
Innovation Solution
A camera system with an adjustment device that includes a communication module, command component, and processor for automatic lens control, allowing for both slave and override modes, and a method for building a lens model using focal distance data to enable precise focus adjustment without manual dial operation, using sensors to capture three-dimensional positional and orientation data for real-time focus control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual focus adjustment is used by a focus puller, then flexibility and creative control are maintained, but the process is time-consuming and prone to error
Solution Approach 1:
The patent replaces the manual mechanical focus adjustment system with an automated optical measurement and control system. Sensors capture three-dimensional positional data of moving subjects, and a processor automatically calculates and adjusts lens focus settings, eliminating the need for manual mechanical adjustment by a focus puller.
Solution Approach 2:
The system enables self-service focus adjustment where the camera system automatically monitors subject position and adjusts focus without human intervention. The automated system serves itself by continuously tracking subjects and making real-time focus corrections based on captured positional data.
2Productivity
If automated focus systems are used, then speed and efficiency are improved, but accuracy and flexibility are reduced
Solution Approach 1:
The patent employs sophisticated optical sensors and computational algorithms to achieve precise automated focus control. The system captures detailed three-dimensional positional data and uses processor-based calculations to determine exact focus settings, replacing simple automated mechanisms with intelligent optical measurement systems.
3Adaptability or versatility
If manual focus marking and measurement is performed, then adaptability to different shooting scenarios is maintained, but device complexity and difficulty of operation increase
Solution Approach 1:
The patent creates a universal focus control system that handles multiple shooting scenarios through a single integrated platform. The automated system adapts to different subjects, distances, and movement patterns using the same core technology of optical sensing and processor-based calculation, eliminating the need for separate manual procedures for each scenario.
4Manufacturing precision
If precise focus control is required for long focal lengths and wide apertures, then image quality is improved, but the difficulty of detecting and measuring subject position increases
Solution Approach 1:
The patent replaces difficult manual measurement methods with automated optical sensors that precisely detect subject position in three-dimensional space. The system uses computational algorithms to calculate exact focus distances from captured positional data, providing the precision needed for long focal lengths and wide apertures without manual measurement effort.
Data Source
AI summary
An adjustment device and associated method is disclosed, for adjusting an equipment, such as a camera, having an actuator for adjusting a variable setting, such as a lens setting (focus, iris, zoom). A control system drives the actuator and command component of the adjustment device to reflect a position of the actuator. In a slave mode, the command component is driven by the control system. In an override mode, a manual operation of the command component drives the actuator of the equipment. Also disclosed are a method for building a model of a lens, a method for treating an image capture to produce a visual effect, a method for creating a node in a model representing a given space, a method for setting a node in a model based on a known node, and a method for calibrating a node in a model.