Video Imaging Metadata Prioritization for Low-Delay Frame Output
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Solution Overview
Problem
Existing video imaging systems experience delays in metadata output, which can influence development processing, particularly when the data size exceeds transmission capacity.
Innovation Solution
A video imaging apparatus and method that generates metadata indicating imaging conditions in association with frame data, adding it to the frame data before demosaicing, and prioritizes metadata output based on importance for development processing, using a processor to manage metadata addition and output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If all metadata is added to frame data for output, then completeness of imaging information is improved, but data transmission delay increases
Solution Approach 1:
The patent segments metadata into multiple priority levels (first priority, second priority, etc.), allowing selective transmission of critical metadata first. This segmentation enables the system to transmit essential imaging conditions immediately while deferring less critical metadata, thus reducing overall transmission delay while maintaining information completeness.
Solution Approach 2:
The patent performs preliminary classification of metadata into priority groups before transmission. By pre-organizing metadata based on importance for development processing, the system can immediately transmit high-priority metadata without waiting for complete metadata generation, reducing the delay between frame capture and available processing information.
2Loss of information
If metadata data size is increased to include all imaging conditions, then information completeness is improved, but transmission capacity is exceeded
Solution Approach 1:
The patent divides comprehensive metadata into segmented priority levels, allowing the system to transmit only the most essential imaging conditions within available transmission capacity. High-priority metadata contains critical development parameters, while lower-priority metadata includes supplementary imaging conditions that can be transmitted later or omitted if capacity is constrained.
Solution Approach 2:
The patent implements partial transmission of metadata by selecting only the most important imaging conditions for immediate transmission. This partial action approach ensures that sufficient information for development processing is available within transmission capacity limits, while complete metadata can be transmitted progressively as capacity allows.
3Measurement precision
If metadata is transmitted after complete generation, then data accuracy is improved, but processing efficiency decreases
Solution Approach 1:
The patent segments metadata transmission into priority-based batches, allowing development processing to begin with high-priority metadata while remaining metadata is transmitted and integrated subsequently. This segmentation enables parallel processing where development can start immediately with essential imaging conditions rather than waiting for complete metadata generation.
Solution Approach 2:
The patent performs preliminary identification and transmission of high-priority metadata that contains the most critical imaging conditions for development processing. This preliminary action allows the development system to prepare and process frames using essential metadata parameters before receiving complete metadata, significantly improving processing throughput while maintaining accuracy for critical parameters.
Data Source
AI summary
An image sensor generates image data of a video as a plurality of frame data that are continuous in a temporal order. A processor generates metadata in association with the frame data and adds the metadata to the frame data and output the frame data to which the metadata is added as video data. In particular, the processor adds metadata which is not added to first frame data generated by the imaging sensor among metadata associated with the first frame data to second frame data after the first frame data.