Virtual Billboard Pre-Rendering for Low-Lag Live Broadcast Insertion
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Solution Overview
Problem
Existing virtual billboard systems for live broadcasts face challenges in quality, speed, and cost-effectiveness due to limited ability to check and adjust advertising images in real-time for varying camera positions, leading to unacceptable lag times and restricted placement opportunities.
Innovation Solution
A massively pre-rendered virtual billboard system that collects and stores pan, tilt, and zoom data for a spatial area, builds 3-D skeleton frame models, and pre-renders insertable images for each camera position, allowing dynamic content changes and simultaneous delivery to different audiences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If real-time rendering and insertion of advertising images is attempted for live broadcasts, then dynamic content changes and advertising flexibility are improved, but image quality and timing accuracy deteriorate due to unacceptable lag times
Solution Approach 1:
The system performs preliminary actions by pre-rendering advertising images for multiple camera positions and storing them in advance. During live broadcast, the system only needs to retrieve and insert the pre-rendered images, eliminating real-time rendering delays and achieving both dynamic content changes and acceptable timing accuracy
2Adaptability or versatility
If real-time rendering of advertising images is performed for multiple camera positions, then advertising placement flexibility is improved, but image quality deteriorates due to inability to check and adjust images before broadcast
Solution Approach 1:
The system pre-renders advertising images for multiple camera positions and allows quality checking and adjustment before the live broadcast. This preliminary quality control ensures high image quality while maintaining the flexibility of multiple advertising placement options
Solution Approach 2:
The system incorporates feedback mechanisms to check and adjust the quality of pre-rendered advertising images before broadcast. This allows quality control and adjustments to be made in advance, ensuring high image quality for all camera positions
3Ease of manufacture
If physical billboards are used for advertising, then advertising content can be displayed, but costs and complexity increase due to location rights, construction, and maintenance requirements
Solution Approach 1:
The system creates virtual copies of billboards that can be overlaid on live broadcast footage. These virtual billboards replicate the advertising function of physical billboards without requiring physical construction, location rights, or maintenance, significantly reducing costs and complexity
Solution Approach 2:
The system replaces the mechanical system of physical billboards with a digital imaging and processing system. This substitution eliminates the need for physical construction and maintenance while providing flexible, cost-effective advertising implementation
Data Source
AI summary
A system for collecting data for creating and projecting live virtual billboards in a real-time broadcast is disclosed. The system pre-renders massive amounts of image content in order to insert the pre-rendered images into a live media feed with minimal time lag. The system collects camera meta data in the form of pan, tilt, and zoom) with reference points of the virtual billboards for each camera location in a venue. The relevant digital images are automatically pre-rendered for insertion into the virtual billboard area of a field of view of the camera location. The metadata and the pre-rendered images are stored in a venue data library for use in live broadcasts.