Audio Channel Generation via Object Tracking in Video
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Solution Overview
Problem
Current audio processing methods for multi-microphone recordings in video recordings require manual selection of audio sources, which is tedious and inefficient, especially when generating surround sound or binaural audio, as they lack the ability to automatically determine the location of microphones relative to cameras during recording.
Innovation Solution
A method that receives video and audio recordings, tracks the object associated with the microphone, and determines its location relative to the camera using motion and location information, allowing for the generation of additional or modified audio channels such as surround sound or head-related transfer function audio channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual selection of audio sources is used, then audio processing can be performed, but the process becomes tedious and inefficient
Solution Approach 1:
The system automatically tracks objects in video frames and associates audio sources with visual objects without requiring manual operator intervention. The audio processing system serves itself by autonomously determining microphone locations and generating audio channels based on tracked object positions, eliminating the need for operators to manually select audio sources in video frames
Solution Approach 2:
The system performs preliminary tracking of objects throughout the video recording to establish their locations before audio processing occurs. By pre-determining the spatial positions of audio sources through continuous video frame analysis, the system prepares all necessary location data in advance, enabling efficient automated audio channel generation without manual intervention during the processing stage
2Productivity
If automated tracking is implemented, then audio channel generation becomes efficient, but system complexity increases
Solution Approach 1:
The video recording system serves multiple functions: it captures visual content for the video output and simultaneously tracks objects to determine audio source locations. The same video frames used for visual display are reused for audio source localization, eliminating the need for separate tracking hardware and reducing overall system complexity while maintaining high processing efficiency
Solution Approach 2:
The system merges the video processing and audio source localization functions into a single integrated process. By combining the visual tracking data with audio processing, the system creates a unified workflow where one system performs both visual and spatial audio tasks, reducing the number of separate components needed and simplifying the overall system architecture
Data Source
AI summary
A method may include receiving video recorded with a camera and audio recorded with a microphone, wherein the video and audio were recorded simultaneously, and wherein the microphone is configured to move relative to the camera. The method may further include receiving a selection from a user of an object in the video, wherein the object is collocated with the microphone that recorded the audio. The method may further include tracking the object in the video and determining a location over time of the microphone relative to the camera based on the tracking of the object.