Multi-Terminal HDR Photography With Synchronized Frame Fusion
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Solution Overview
Problem
Existing multi-frame processing algorithms on terminals are limited by computing performance, leading to unsatisfactory image definition, dynamic range, and signal-to-noise ratio in photographed images, and methods like HDR imaging face challenges such as ghost images and limited exposure ratios.
Innovation Solution
A photographing method utilizing multiple terminals for synchronized multi-frame fusion processing, including depth image detection and HDR image generation, where a master apparatus controls slave apparatuses to synchronize visual fields and exposure ratios, enhancing image quality without increasing hardware cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multi-frame processing algorithms are used on a single terminal, then image integration is achieved, but image definition, dynamic range, and signal-to-noise ratio remain unsatisfactory due to limited computing performance
Solution Approach 1:
The patent divides the multi-frame processing system into multiple independent terminals, each capturing images independently. This segmentation allows parallel processing across devices, overcoming the computing performance limitations of a single terminal while maintaining or improving image definition through synchronized multi-terminal fusion.
Solution Approach 2:
The patent transitions from single-terminal multi-frame processing to multi-terminal synchronous processing, adding the dimension of spatial distribution across multiple devices. This dimensional change enables parallel computation and data fusion, significantly improving image definition, dynamic range, and signal-to-noise ratio beyond what a single terminal can achieve.
2Reliability
If HDR imaging is performed with multiple exposure ratios, then dynamic range is improved, but ghost images appear due to scene changes between exposures
Solution Approach 1:
The patent employs synchronous periodic capture of multiple exposure frames across multiple terminals simultaneously. By coordinating the exposure timing periodically and synchronously across devices, the system captures scene information at identical moments, eliminating ghost images caused by scene changes while maintaining improved dynamic range through multi-exposure fusion.
Solution Approach 2:
The patent implements synchronization mechanisms where terminals exchange timing and exposure information in real-time. This feedback loop ensures all terminals capture images at precisely coordinated moments with matching exposure ratios, preventing ghost images while achieving enhanced dynamic range through the fusion of synchronously captured multi-exposure data.
3Reliability
If multiple terminals are used for synchronous photographing, then image quality and dynamic range are enhanced, but system complexity and coordination requirements increase
Solution Approach 1:
The patent introduces a master terminal that acts as an intermediary to coordinate synchronization signals, exposure ratios, and timing information across multiple slave terminals. This intermediary approach simplifies the coordination complexity by centralizing control while still enabling multi-terminal synchronous operation to achieve enhanced image quality and dynamic range.
Solution Approach 2:
The patent designs the terminal system with universal communication and synchronization protocols that can be implemented across different device types. This multi-functionality allows various terminals to participate in synchronous photographing with standardized coordination mechanisms, reducing system complexity while maintaining improved image quality through multi-terminal fusion.
Data Source
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AI summary
A photographing method includes: in response to determining that a processing condition for multi-frame photographing is met, acquiring (S 101) images from one or more second photographing apparatuses respectively to obtain a plurality of frames of images; and performing (S102) multi-frame fusion processing on the plurality of frames of images to obtain a photographed image.