Dual-Encoder Camera Recording for Moving-Object Focus Tracking
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Solution Overview
Problem
Existing automatic focus tracking systems fail to maintain focus on moving objects, leading to out-of-focus or focus shifting issues during video recording.
Innovation Solution
A photographing method that utilizes two encoders to simultaneously capture an original video and a close-up video of a selected object, allowing for focus tracking and separate recording in different framing ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic focus tracking is performed on photographed objects, then focus stability is improved, but the system cannot handle multiple photographed objects simultaneously
Solution Approach 1:
The patent divides the video processing into two separate encoding paths: a first encoder handles the original video with comprehensive scene coverage, while a second encoder processes close-up videos with focus tracking on selected objects. This segmentation allows each encoder to specialize in different aspects, resolving the contradiction between focus stability and multi-object handling capability
2Adaptability or versatility
If a single encoder is used for video recording, then device complexity is reduced, but the inability to provide both original video and close-up video simultaneously limits user requirements
Solution Approach 1:
The system segments the encoding function into two independent encoders: the first encoder generates original videos capturing the entire scene, while the second encoder produces close-up videos with focus tracking. This segmentation enables the system to meet diverse user requirements for different video types simultaneously, despite the increased device complexity
Solution Approach 2:
The patent implements a universal photographing system that can simultaneously produce multiple types of videos (original video and close-up video) through multiple encoders. This multi-functionality allows a single photographing session to satisfy various user needs, making the system adaptable to different scenarios
3Measurement precision
If focus tracking is performed on moving objects, then focus accuracy is improved, but the system lacks the capability to provide both wide-angle and close-up views simultaneously
Solution Approach 1:
The patent segments the video output into two distinct streams: the first encoder produces original videos with wide framing ranges showing the entire scene, while the second encoder generates close-up videos with precise focus tracking on selected objects. This segmentation resolves the contradiction by providing both wide-angle and close-up views simultaneously through separate encoding paths
Data Source
AI summary
This application provides a photographing method and a related device. The photographing method may be applied to an electronic device provided with a camera and a display. According to the photographing method, in a photographing scene in which a plurality of photographed objects are photographed together, the electronic device may perform focus tracking on one of the photographed objects, and creates two encoders to respectively encode an original image displayed in a large preview window and a close-up image displayed in a small preview window, to obtain an original video and a close-up video. In some embodiments of this application, the electronic device may obtain one original video and a plurality of close-up videos through photographing.