Lighting System Synchronizing Video Color and Audio Intensity
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Solution Overview
Problem
Current dynamic light scene technologies do not effectively synchronize light effects with audio-visual content to provide a deeply immersive experience, as they primarily rely on video color extraction and audio intensity, failing to fully integrate both auditory and visual elements.
Innovation Solution
A method to control connected lighting systems by automatically extracting colors from video segments and calculating audio intensity levels to determine target light colors and intensities, synchronizing light effects with audio-visual content, using wireless or wired connections, and employing time envelope functions to enhance immersion and reduce distracting flicker.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic light scenes are rendered based on video color extraction and audio intensity, then the lighting system can provide immersive experience, but the synchronization between light effects and audio-visual content remains insufficient
Solution Approach 1:
The audio-visual content is divided into segments, and for each segment, color is extracted from video frames and audio intensity is calculated from audio samples. This segmentation allows independent processing of visual and auditory elements, enabling precise synchronization of light effects with specific content segments while maintaining immersive experience
Solution Approach 2:
The system continuously monitors both video and audio streams, extracting color and intensity data in real-time to dynamically adjust lighting parameters. This feedback mechanism ensures that light effects remain synchronized with audio-visual content, resolving the synchronization accuracy issue while preserving adaptability
2Speed
If light intensity is directly adjusted based on audio intensity levels, then the system responds dynamically to audio content, but distracting flicker effects occur
Solution Approach 1:
The system pre-calculates target light intensity levels based on audio intensity, then applies smooth transitions using time envelope functions before actual light output changes occur. This preliminary action prevents abrupt intensity changes that cause flicker, while maintaining dynamic response to audio content
Solution Approach 2:
The system transforms raw audio intensity values into smoothed light intensity parameters using time envelope functions. This parameter transformation changes the response characteristics from direct and flickery to gradual and smooth, eliminating harmful flicker effects while preserving dynamic audio responsiveness
3Measurement precision
If color is extracted from every video frame, then the lighting system accurately reflects video content, but processing complexity and computational load increase
Solution Approach 1:
Instead of processing every video frame continuously, the system segments the video stream and extracts color from representative frames within each segment. This reduces the total number of processing operations while maintaining accurate color representation of the video content
Solution Approach 2:
The system extracts color from a subset of video frames rather than all frames, using partial action to reduce computational load. This selective sampling maintains sufficient color accuracy for lighting reproduction while significantly decreasing processing complexity
Data Source
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AI summary
A method of controlling a connected lighting system based on audio-visual content. The method comprises automatically performing operations of: color extraction from an image comprised in video component of the audio-visual content, calculating an audio intensity level of an audio sample of the audio component of the audio-visual content, determining of a first target light color and a first audio intensity level based on the extracted color and the calculated audio intensity level; and controlling at least one lighting device according to the determined first target light color and the first audio intensity level. This method provides for control in a manner which increases immersion of a user experiencing the audio-visual content as being rendered by, for example a TV, through providing light effects by a connected lighting system.