Video Distribution Apparatus Object Disappearance Metadata
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Solution Overview
Problem
In video distribution systems using metadata related to objects, frame drops can lead to continuous display of erroneous information about objects that no longer exist, as existing techniques only detect errors without preventing the lack of information.
Innovation Solution
A video distribution apparatus that includes an object detection unit, metadata addition unit, and control unit, which adds metadata indicating object disappearance to subsequent frames under specific conditions, ensuring accurate representation of object existence status even during frame drops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If frame drop occurs in video transmission, then data transmission efficiency is improved, but object information accuracy deteriorates
Solution Approach 1:
The system performs preliminary actions by detecting object disappearance in advance and proactively transmitting disappearance metadata to the reception apparatus before frame drops occur. This allows the reception apparatus to prepare for potential frame loss by having the disappearance information ready, ensuring that when frames are dropped, the object information accuracy is maintained because the reception apparatus already has the correct disappearance status.
Solution Approach 2:
The system implements feedback by continuously monitoring object detection results and dynamically adjusting metadata transmission based on the current state. When an object disappears, the system provides feedback by transmitting disappearance metadata, which informs the reception apparatus to update its display state. This feedback mechanism ensures that even during frame drops, the reception apparatus receives accurate object information updates.
2Reliability
If object disappearance metadata is transmitted to all subsequent frames, then object information accuracy is improved, but data amount increases
Solution Approach 1:
The system applies local quality by selectively transmitting disappearance metadata only for specific frames that meet predetermined conditions, rather than uniformly to all subsequent frames. The predetermined conditions may include frame type (e.g., I-frames only), timing intervals, or importance levels. This selective approach ensures that object information accuracy is maintained for critical frames while minimizing unnecessary data transmission for less important frames.
Solution Approach 2:
The system uses partial action by transmitting disappearance metadata to only a subset of subsequent frames rather than all frames. The metadata is transmitted to frames that satisfy predetermined conditions, which may be determined based on frame importance, timing, or reception apparatus capabilities. This partial transmission approach balances the need for accurate object information with the need to minimize data amount.
Data Source
AI summary
A video distribution apparatus includes an object detection unit configured to execute object detection processing with respect to a video indicated by video data obtained by the image capturing unit; metadata addition unit configured to add information related to an object obtained by the object detection unit, as metadata, to encoded data of a corresponding frame of the video, and a control unit configured to control the metadata addition unit based on a result of the detection processing executed by the object detection unit, wherein in a case where the result of the detection processing executed by the object detection unit indicates a disappearance of the object, the control unit controls the metadata addition unit to add metadata indicating the disappearance of the object also to a frame that follows the corresponding frame and satisfies a predetermined condition.