Imaging Apparatus Offset Metadata for Position Invalidation
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Solution Overview
Problem
Existing imaging apparatuses face inefficiencies in invalidating position information within moving image files, as scattered metadata requires extensive analysis and processing time, especially as data volume increases.
Innovation Solution
The implementation of an imaging apparatus that calculates offsets between reference positions and acquired image positions, generating metadata that accompanies moving images, allowing for efficient invalidation of position information by storing and processing these offsets within the apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If position information metadata is multiplexed at regular intervals throughout the moving image file, then position information coverage is improved, but invalidation processing time increases
Solution Approach 1:
The patent extracts position information from scattered metadata throughout the moving image file and consolidates it into a separate position information management structure. This allows the system to work with a compact representation of position data rather than searching through the entire moving image file, enabling fast invalidation processing while maintaining complete position information coverage.
Solution Approach 2:
The patent performs preliminary processing to create an index or table of contents that maps position information locations before the invalidation operation is needed. This preliminary action organizes the scattered position data into an accessible structure, so that when invalidation is required, the system can quickly locate and invalidate position information without scanning the entire file.
2Measurement precision
If all position information is scattered throughout the moving image file, then position accuracy is improved, but data analysis complexity increases
Solution Approach 1:
The patent introduces an intermediary data structure (position information table or index) that sits between the scattered position metadata in the moving image file and the processing system. This intermediary consolidates position information references and provides a simplified interface for analysis, reducing complexity while preserving the accuracy of position data distributed throughout the file.
3Loss of information
If metadata is multiplexed into the moving image at regular intervals, then position information availability is improved, but processing efficiency deteriorates
Solution Approach 1:
The patent segments position information processing into two parts: (1) position data embedded at regular intervals in the moving image file for complete coverage, and (2) a separate consolidated position information structure that aggregates references to this data. This segmentation allows the system to maintain position information availability through distributed metadata while achieving processing efficiency through centralized management of position data references.
Data Source
AI summary
An imaging unit captures a moving image containing a plurality of images in a time-series order. A position acquisition unit acquires positions at which the plurality of images are captured. An offset calculation unit calculates, as an offset, a difference between a reference value that is any of the positions at which the plurality of images are captured and each of the positions to associate the offset with the image whose position is acquired. A metadata generation unit generates, as moving image metadata that accompanies the moving image, metadata containing the reference value and generates, as image metadata that accompanies the image corresponding to the offset, metadata containing the offset, for each of the acquired positions.