Dual-Stream Video Shooting for Protagonist Close-Up and Context
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Solution Overview
Problem
Existing video shooting technologies focus solely on a close-up of the selected protagonist, often ignoring the surrounding environment, making it difficult for users to capture the context of the protagonist's actions and surroundings.
Innovation Solution
A method for an electronic device to simultaneously record an original video and a close-up video, allowing users to select a protagonist and track it while capturing both videos, ensuring the protagonist remains centered in the close-up video.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the terminal device records only a close-up video of the selected protagonist, then the detail of the protagonist is improved, but the surrounding environment information is lost
Solution Approach 1:
The video recording is segmented into two separate video streams: a close-up video stream focusing on the protagonist and an original video stream capturing the surrounding environment. This segmentation allows both detailed protagonist footage and environmental context to be preserved independently, resolving the contradiction between detail precision and information loss.
2Adaptability or versatility
If the terminal device records both original video and close-up video simultaneously, then the comprehensive video content is improved, but the device complexity increases
Solution Approach 1:
The video recording system is designed with multi-functionality to simultaneously handle multiple recording tasks: capturing the original wide-angle video, identifying the protagonist, and generating the close-up video stream. This universal approach allows the device to provide comprehensive video content without requiring separate dedicated systems for each function.
Solution Approach 2:
The protagonist identification module acts as an intermediary between the original video stream and the close-up video generation process. It receives the original video input, identifies the protagonist, and directs the close-up recording based on this identification, thereby managing the complexity of simultaneous dual-stream recording through a centralized control mechanism.
3Measurement precision
If the terminal device automatically tracks the protagonist in real-time, then the protagonist tracking accuracy is improved, but the processing time and computational load increase
Solution Approach 1:
The system performs preliminary protagonist identification by analyzing the initial video frame or user input before starting the close-up recording. This preliminary action establishes the protagonist target in advance, allowing the real-time tracking to proceed more efficiently by comparing subsequent frames against the pre-identified target rather than performing full analysis on each frame.
Data Source
AI summary
This application provides a shooting method. By implementing the method, a terminal device such as a mobile phone or a tablet computer can determine a shot protagonist based on a user operation when starting shooting or in a shooting process. In the shooting process, the terminal device may display, in a preview window, an image stream collected by a camera, and the terminal device may further generate a small window that specially displays the protagonist. After recording ends, a user may obtain two videos: an original video generated based on the image stream in the preview window, and a close-up video generated based on a protagonist image stream in the small window. In this way, the user can choose to use the original video and/or the close-up video to meet personalized requirements in different scenarios at different moments of the user.