Bird's-Eye Vehicle Display Using Past Video for Object Continuity
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Solution Overview
Problem
Existing video display devices for vehicles may not sufficiently suppress the disappearance or duplication of objects, particularly when there are many objects and computational capabilities are limited, leading to issues with real-time motion representation.
Innovation Solution
A video display device that selects video to be synthesized from real-time video and past video based on the vehicle's situation or traveling state, and outputs a bird's-eye view video by synthesizing the selected video, thereby incorporating past video to reduce object disappearance or duplication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If real-time video is always used for synthesizing bird's-eye view video, then the video can respond to real-time motion around the vehicle, but object disappearance or duplication occurs frequently when there are many objects and computational capability is limited
Solution Approach 1:
The system dynamically adjusts the video source selection between real-time video and past video based on the vehicle's traveling state. When the vehicle is stationary or moving slowly, past video is used to maintain object continuity. When the vehicle is moving quickly or changing direction, real-time video is used to capture current motion. This dynamic switching resolves the contradiction by adapting the video source to the specific operational context.
Solution Approach 2:
The system changes the parameter of video temporal source (real-time vs. past) based on traveling state parameters. By monitoring vehicle speed, acceleration, and direction changes, the system selects the appropriate video source to either prioritize object stability or real-time motion response, thus resolving the contradiction between these two opposing requirements.
2Reliability
If past video is always used for synthesizing bird's-eye view video, then object disappearance or duplication is suppressed, but the video cannot respond to real-time motion around the vehicle
Solution Approach 1:
The system dynamically switches between using past video for stability and real-time video for motion response based on the vehicle's traveling state. This dynamic adaptation allows the system to maintain object continuity when needed while capturing real-time motion when necessary, resolving the contradiction between reliability and speed.
Solution Approach 2:
The system changes the temporal parameter of the video source based on traveling state parameters. By adjusting this parameter according to vehicle motion conditions, the system optimizes the balance between object continuity and real-time motion representation.
3Reliability
If the boundary of the image to be synthesized is changed to prevent object overlap, then object discontinuity or collapse is suppressed, but object disappearance or duplication occurs when there are many objects and computational capability is limited
Solution Approach 1:
The system extracts and uses only the necessary portion of video data (past video or real-time video) based on the traveling state, rather than processing all available video data. This selective extraction reduces computational complexity while maintaining object continuity, resolving the contradiction between reliability and device complexity.
Solution Approach 2:
The system changes the parameter of video source selection to reduce computational burden. By switching between past video and real-time video based on traveling state, the system avoids the need for complex real-time boundary adjustments while maintaining object continuity.
Data Source
AI summary
A video display device includes: a camera configured to capture video of surroundings of a vehicle; a storage unit configured to store the video captured by the camera as past video; a control unit configured to select video to be synthesized from real-time video captured by the camera and the past video stored in the storage unit based on a situation around the vehicle or a traveling state of the vehicle, and output bird's-eye view video looking down at the vehicle from a viewpoint above the vehicle, the bird's-eye view video being obtained by synthesizing the video selected; and a display unit configured to display the bird's-eye view video output by the control unit.