Pre-Rendered Virtual Billboards for Low-Lag Live Broadcast Insertion
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Solution Overview
Problem
Existing virtual billboard systems for live broadcasts face challenges in real-time image rendering quality, lag time, and limited placement opportunities due to physical constraints, which hinder dynamic and high-quality advertising experiences.
Innovation Solution
A massively pre-rendered virtual billboard system that utilizes high-resolution cameras, automated data collection, and augmented reality to capture and store millions of pre-rendered images for various camera positions, enabling real-time dynamic content insertion and adjustment based on PTZ data and ambient conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If real-time rendering of advertising images is performed for each camera PTZ position during live broadcast, then dynamic content adaptation is achieved, but image quality deteriorates and lag time increases
Solution Approach 1:
The system performs pre-rendering of advertising images for multiple camera PTZ positions before the live broadcast event. A venue data library is created during a pre-event data collection phase, storing pre-rendered content images with associated camera position metadata. During the actual broadcast, the system only needs to retrieve and display the appropriate pre-rendered image based on the current camera PTZ position, eliminating real-time rendering delays and quality degradation.
2Adaptability or versatility
If physical billboards are constructed at various locations in the venue, then advertising placement opportunities are provided, but implementation costs and real estate requirements increase
Solution Approach 1:
The system creates virtual copies of billboard structures through computer-generated imagery and augmented reality overlays. Instead of constructing physical billboards at multiple venue locations, the system renders virtual billboard images that appear integrated into the live camera feeds. These virtual billboards can be placed at any location within the camera field of view without requiring physical space, construction permits, or real estate agreements.
3Adaptability or versatility
If green screen technology is physically anchored to real estate locations, then dynamic content changes are enabled, but location flexibility is reduced
Solution Approach 1:
The system replaces the mechanical green screen structure with a digital processing approach. Instead of physically anchoring green screens to specific locations and using chroma keying technology, the system uses computer vision and image processing to identify and overlay virtual billboard content directly into the live video feed. This substitution of mechanical infrastructure with software-based processing enables content to be dynamically changed and positioned anywhere in the camera field of view without physical constraints.
Data Source
AI summary
A system for projecting content on live virtual billboards in a broadcast camera field of view 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 combines real-time camera meta data (on pan, tilt, zoom and focal length) to select one of a set of pre-rendered content images for each camera location in a venue. The relevant pre-rendered digital images are inserted into a virtual billboard area of a field of view of the camera location in a real-time broadcast in order to create a lifelike and realistic viewer experience.