Camera Focal Length Adjustment via UWB Distance Measurement
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Solution Overview
Problem
Current photography solutions face limitations in automatically adjusting focal length for dynamic scenes, as manual adjustments are time-consuming and inconvenient, especially when capturing moving subjects or changing distances.
Innovation Solution
A method and apparatus that establish a communication connection with an external device to measure and adjust photographing distance and angle using UWB signals, identify a composition model, and automatically adjust the focal length to optimize image capture based on real-time parameters, including user-preferred settings and scene analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment of focal length is used, then the photographing device can capture dynamic scenes, but the operation becomes time-consuming and inconvenient
Solution Approach 1:
The system automatically adjusts the focal length by itself without requiring manual intervention. The processor identifies the photographing distance based on communication signals and automatically selects and adjusts the focal length parameter, enabling the device to serve itself in the focal length adjustment task.
Solution Approach 2:
The system uses feedback from communication signals (UWB signals) to determine the photographing distance, and based on this feedback, automatically adjusts the focal length. The continuous reception of position information enables real-time feedback control of the focal length parameter.
2Ease of operation
If automatic adjustment of focal length is used, then the operation becomes convenient, but the system can only handle static objects
Solution Approach 1:
The system transitions from static to dynamic adjustment by continuously receiving communication signals and real-time position information. The focal length is dynamically adjusted based on changing photographing distances, enabling the system to adapt to moving subjects and dynamic scenes.
Solution Approach 2:
The system pre-establishes a correspondence between photographing distance and focal length parameters. Based on the identified photographing distance from communication signals, the system proactively selects the appropriate focal length before the actual photographing occurs, enabling smooth handling of dynamic scenes.
3Manufacturing precision
If the system adjusts focal length based on photographing distance, then the image quality improves, but the device complexity increases due to communication connection requirements
Solution Approach 1:
The communication connection system serves multiple functions: it not only provides focal length adjustment but also determines photographing distance, identifies external devices, and enables real-time position tracking. This multi-functionality reduces the need for separate dedicated components for each function.
Solution Approach 2:
The communication signal acts as an intermediary that carries position information between the external device and the photographing device. This intermediary enables the system to obtain photographing distance information without requiring direct physical measurement devices, simplifying the overall system architecture.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient and accurate automatic adjustment of focal length, improving the quality of photographs by ensuring the subject is within a preset scale range, reducing the need for manual intervention and enhancing the convenience of capturing dynamic scenes.
Implementation Method 1
identifying a photographing distance and a photographing angle with respect to the external device based on timings of signals transmitted and received through the communication connection
Data Source
AI summary
A photographing method and apparatus are provided. The photographing method includes: identifying a photographing distance and a photographing angle with respect to the external device based on timings of signals transmitted and received through a communication connection; acquiring a scene image based on an output of a camera of the photographing device; identifying a current composition model based on the photographing distance, the photographing angle and the scene image; acquiring a set of photographing parameters that are associated with the current composition model; identifying a focal length based on the photographing distance and the current composition model; displaying a preview image based on the output of the camera, the photographing parameter and the current composition model; outputting the preview image as a photographing result based on a photographing instruction; and updating the set of photographing parameters based on the photographing parameter.