Adaptive Video Transmission for Remote Work Machine Operation
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Solution Overview
Problem
Existing remote operation systems face issues with video disruption and deteriorating operability due to variable communication quality, and may fail to include the region of interest in the specific region of focus, affecting remote control efficiency.
Innovation Solution
A video transmission system that includes processors to acquire, identify the status of work, and adjust the image quality between target and non-target regions in the video, stabilizing transmission even under variable communication conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image quality is uniformly maintained across the entire video, then the operator can clearly see all regions, but communication bandwidth requirements increase and transmission stability decreases under variable communication quality
Solution Approach 1:
The patent applies local quality by differentiating image quality across different regions of the video. The target region (where work is being performed) is maintained at high image quality, while non-target regions are transmitted at lower quality. This resolves the contradiction by providing high measurement precision where needed without requiring uniformly high quality across the entire video, thus maintaining transmission stability under variable bandwidth conditions.
Solution Approach 2:
The video is segmented into target regions and non-target regions based on work status identification. This segmentation allows differential transmission strategies: high-quality transmission for critical work areas and reduced-quality transmission for other areas. The segmentation resolves the contradiction by dividing the video into functional zones with different quality requirements, enabling stable transmission even when overall bandwidth is limited.
2Reliability
If a fixed specific region is captured with high quality, then transmission bandwidth is reduced, but the region of interest may not be contained in that specific region, deteriorating operability
Solution Approach 1:
The patent implements dynamics by making the target region adaptive rather than fixed. The system identifies the work status (excavation, loading, transportation, etc.) and dynamically determines which region should be the target. This allows the high-quality region to move and change based on actual work requirements, ensuring operability is maintained while keeping transmission bandwidth requirements manageable through selective focus.
Solution Approach 2:
The system uses feedback from work status identification to adjust which region receives high-quality transmission. By monitoring what work is being performed and using that information to determine the target region, the system ensures that the region of interest is always captured with high quality. This feedback mechanism resolves the contradiction by making the specific region adaptive to actual operational needs rather than fixed.
3Ease of operation
If the entire video is transmitted at high quality, then operability is maintained, but communication traffic increases and transmission may fail under variable communication quality
Solution Approach 1:
The patent transmits only the necessary portion of the video at high quality - specifically the target region where work is being performed. Non-target regions are transmitted at lower quality or with reduced detail. This local quality approach maintains operability by ensuring the critical work area is always clear while dramatically reducing overall communication traffic, preventing transmission failures under variable bandwidth conditions.
4Reliability
If communication traffic is reduced by lowering overall video quality, then transmission stability improves, but image quality in the region of interest may deteriorate
Solution Approach 1:
The patent ensures that while overall communication traffic is reduced, the image quality in the region of interest (target region) is maintained at high levels. By applying local quality differentiation, the system transmits high-quality data only where needed for operability, while accepting lower quality in non-critical regions. This resolves the contradiction by protecting transmission stability through selective quality reduction rather than uniform reduction.
Data Source
AI summary
In order to stably transmit a video of a surrounding area of a work machine even under an environment of a variable communication quality while maintaining operability during remote operation of the work machine, a video transmission system (1) includes: an acquiring section (11) for acquiring a video captured with at least a portion of a work machine and at least a portion of a work area of the work machine being within an angle of view; a status identifying section (12) for identifying a status of work performed, by the work machine, on an object being worked; a region identifying section (13) for identifying a target region in the video according to a result of identification carried out by the status identifying means; and a transmitting section (14) for transmitting a post-adjustment video obtained by adjusting a relative image quality between the target region and a region outside the target region in the video.