Vehicle Image Metadata Screening for Bandwidth-Efficient Storage
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Solution Overview
Problem
Image data captured by vehicle-mounted devices is large in size, requiring significant transmission bandwidth and storage space, necessitating an efficient means for communication and storage optimization.
Innovation Solution
A method involving storing and transmitting metadata segments associated with image data segments, using different communication interfaces for metadata and image data based on volume, allowing appropriate hardware utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If image data is transmitted from vehicle to remote device, then complete image data is available for storage and access, but transmission bandwidth consumption increases significantly
Solution Approach 1:
The patent extracts only the essential metadata (start time, end time, location) from the image data and transmits this extracted information to the remote device. This allows the remote device to identify and request only specific image data segments when needed, rather than transmitting all image data continuously, thereby significantly reducing bandwidth consumption while maintaining data availability.
Solution Approach 2:
The patent performs preliminary transmission of metadata segments before actual image data transmission. The remote device uses this advance metadata information to determine which image data segments are needed, allowing for selective retrieval rather than complete data transmission, thus optimizing bandwidth usage.
2Reliability
If image data is stored in large volumes at remote device, then complete image archive is maintained, but storage space requirements increase significantly
Solution Approach 1:
The patent segments image data into discrete segments with associated metadata (start time, end time, location). The remote device stores only the metadata segments in its library, while actual image data segments are stored locally at the vehicle. This segmentation allows the remote device to maintain a complete archive index without storing the bulky image data itself, significantly reducing storage requirements.
Solution Approach 2:
The patent creates a metadata copy that contains essential information (time, location, segment identifiers) representing the actual image data. This metadata copy serves as a reference that allows the remote device to identify and retrieve specific image segments when needed, eliminating the need to store duplicate full-resolution image data at the remote location.
3Loss of information
If all image data segments are transmitted to remote device, then no data loss occurs, but transmission time and bandwidth are wasted for duplicate or unnecessary data
Solution Approach 1:
The patent implements a feedback mechanism where the remote device compares received metadata segments against its existing metadata library to identify duplicates or already-stored data. Based on this feedback, the remote device sends selective requests only for missing or new image data segments, preventing redundant transmissions and optimizing both time and bandwidth utilization.
4Loss of energy
If metadata is transmitted instead of full image data, then bandwidth consumption is reduced, but data communication capability must be differentiated
Solution Approach 1:
The patent applies local quality by differentiating communication interfaces based on data type and volume. Metadata segments (small size) are transmitted using one communication interface, while actual image data segments (large size) are transmitted using a different interface. This localized optimization allows each interface to be appropriately matched to its data transmission requirements, managing complexity through specialized handling.
Data Source
AI summary
Image data captured at vehicles is transmitted and stored remotely from vehicles. To prevent redundant transmission and storage of image data, a reference metadata database is implemented, where metadata is stored corresponding to image data. Before transmitting image data from a vehicle and storing the image data remotely, metadata corresponding to the image data is evaluated against the reference metadata database to determine whether the image data is already stored remotely from the vehicle. Where the metadata corresponding to the image data is already in the reference metadata database, the image data is not re-transmitted or stored in duplicate. Where the metadata corresponding to the image data is not already in the reference metadata database, the image data is transmitted from the vehicle and stored in the image data database.