Transcoder Device for Multi-Camera Video Stream Fusion
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Solution Overview
Problem
Current video systems in security technology face challenges in efficiently combining and processing non-overlapping and overlapping camera image streams from multiple sources into a coherent video stream, particularly in reducing data transmission while maintaining accurate positioning and resolution, especially in client-server architectures.
Innovation Solution
A transcoder device with a processing portion that integrates image fusion, stitching, rectification, and analysis modules to generate a video stream from multiple camera streams, allowing for adaptive resolution and encoding, and enabling the selection of specific regions of interest within the monitored area, which can be projected onto 3D models or displayed in correct perspective.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple camera image streams are combined and processed into a coherent video stream, then monitoring capabilities are enhanced, but data transmission volume and processing resources increase
Solution Approach 1:
The system segments the monitored region into multiple sub-sections, each covered by a specific camera. The transcoder device processes and transcodes video streams for each sub-section separately, then combines them into a coherent composite video stream. This segmentation allows selective processing and transmission of only relevant regional data, reducing overall data transmission volume while maintaining comprehensive monitoring capabilities.
Solution Approach 2:
The system projects camera image streams onto a 3D model of the monitored region, adding a spatial dimensional layer to the video processing. This 3D projection enables efficient spatial organization and compression of multiple camera views, allowing the system to represent complex multi-camera data in a compact volumetric format that reduces transmission requirements while preserving monitoring versatility.
2Measurement precision
If camera image streams are decoded and processed in real-time, then video quality and positioning accuracy are maintained, but processing time and computational resources increase
Solution Approach 1:
The system performs preliminary actions by pre-establishing the spatial relationships between cameras and the monitored region, and by pre-configuring the transcoding parameters for different sub-sections. The transcoder device is pre-loaded with the necessary decoding algorithms and spatial mapping data, enabling it to quickly process incoming camera streams without extensive real-time computation, thus maintaining positioning accuracy while reducing processing time.
3Stability of the object's composition
If the transcoder device processes and combines multiple camera streams with correct positioning, then video coherence is achieved, but device complexity and computational load increase
Solution Approach 1:
The transcoder device acts as an intermediary between multiple camera systems and the final video output. It receives encoded video streams from various cameras, decodes them, applies necessary spatial transformations based on the 3D model, and re-encodes them into a coherent composite stream. This intermediary role simplifies the overall system architecture by centralizing the complex processing tasks in a single device, thereby achieving video coherence without proportionally increasing overall device complexity.
Data Source
AI summary
A transcoder device. The transcoder device includes an input portion for receiving at least two encoded camera image streams and for decoding the at least two encoded camera image streams, the two camera image streams displaying different sub-sections of a monitored region, an output portion for encoding a video image stream and for outputting the encoded video image stream, and a processing portion for generating the video image stream on the basis of the at least two camera image streams. The video image stream displays a selecting portion of the monitored region, the selecting portion 15 including a sub-region of the one sub-section of the monitored region and a sub-region of the other sub-section of the monitored region which does not overlap the former sub-region.