Composite Background Imaging for Centered Live Video Subjects
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Solution Overview
Problem
Existing technologies struggle to maintain the subject at the center of the frame in live streaming videos, especially when the subject moves, leading to reduced viewer immersion and requiring significant computational resources.
Innovation Solution
An electronic device that includes a camera with a first field of view and a processor to capture a first background image with a second field of view greater than the first, synthesizing it with a second background image based on the subject's distance and position to generate a video with the subject at the center, using minimal computation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional background synthesis methods are used to maintain subject centering, then subject positioning is improved, but computational resources and device complexity increase significantly
Solution Approach 1:
The patent captures a first background image before the live streaming session begins, preparing it in advance for later synthesis with the second background image. This preliminary action reduces real-time computational requirements during live streaming while maintaining accurate subject positioning at the center of the frame
Solution Approach 2:
The patent creates a synthesized background by combining the pre-captured first background image with the real-time second background image. This copying and synthesis approach allows the system to maintain subject centering without requiring complex real-time processing of the entire background, thereby reducing computational resource requirements
2Manufacturing precision
If complex background synthesis algorithms are implemented, then video quality is improved, but ease of operation and equipment requirements worsen
Solution Approach 1:
The patent divides the background into two distinct parts: a first background image captured before live streaming and a second background image captured during live streaming. By segmenting the background synthesis into these two parts, the system achieves high video quality while simplifying the operational complexity and equipment requirements
Solution Approach 2:
The patent applies background synthesis selectively rather than processing the entire background in real-time. By synthesizing only the necessary portions of the background and combining them with pre-captured images, the system maintains high video quality while reducing equipment requirements and ease of operation
Data Source
AI summary
An electronic device according to the present disclosure comprises: a camera having a first field of view; and at least one processor operatively connected to the camera, wherein the at least one processor can be configured to: acquire a first background image having a second field of view that is larger than the first field of view by allowing photography to be performed while changing the direction in which the camera faces, acquire, using the camera, a second background image corresponding to the first field of view and a subject positioned within the second background image, generate a composite image by combining a first part of the first background image and a second part of the second background image on the basis of the distance between a designated position of the second background image and the subject, and generate an image including the composite image and the subject.