Vehicle Top-View Image Mapping Table Selection
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Solution Overview
Problem
Existing image display systems for vehicles experience displacement issues in top-view images due to vehicle body tilt, which are not effectively addressed by current technologies.
Innovation Solution
An image display apparatus that uses multiple cameras to capture surrounding images, stores them in image memories, and employs a mapping-table determining unit to select appropriate mapping tables based on detected passenger numbers, total weight, or vehicle height to correct image alignments and prevent displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed mapping table is used for image combination, then the system structure is simple, but image displacement occurs when the vehicle body tilts due to passenger load
Solution Approach 1:
The patent implements dynamic mapping table selection based on detected passenger numbers. The system switches between multiple mapping tables (first mapping table for fewer passengers, second mapping table for more passengers) according to the actual vehicle load condition, making the previously static mapping system adaptive to changing vehicle tilt states caused by different passenger configurations
Solution Approach 2:
The patent changes the mapping parameters based on passenger load detection. When the passenger number exceeds a threshold, the system switches to a different mapping table that accounts for the increased vehicle tilt angle, thereby maintaining accurate image alignment across varying operational conditions
2Reliability
If multiple mapping tables are introduced to handle different passenger loads, then image displacement is prevented, but the system complexity increases
Solution Approach 1:
The patent employs a feedback mechanism where the passenger detection device continuously monitors the number of passengers and provides this information to the mapping table determining unit. This feedback loop enables the system to automatically select the appropriate mapping table based on real-time passenger load conditions, ensuring accurate image alignment without manual intervention
Solution Approach 2:
The system performs self-adjustment by automatically selecting the appropriate mapping table based on detected passenger numbers. The mapping table determining unit autonomously decides which mapping table to use without requiring external control, making the system self-regulating in response to changing passenger configurations
3Quantity of substance
If the vehicle body tilts due to increased passenger load, then passenger capacity is improved, but image displacement occurs in the top-view display
Solution Approach 1:
The patent prepares multiple mapping tables in advance, each corresponding to different passenger load conditions and associated tilt angles. By having these mapping tables pre-configured and ready for selection, the system can immediately compensate for image displacement when passenger load changes, without requiring real-time calculation or adjustment of the mapping parameters
Data Source
AI summary
An image display apparatus combines vehicle-surroundings images photographed by cameras and displays a top view image. The image display apparatus includes image memories for storing images of landscapes ahead of the vehicle, at the left side of the vehicle, at the right side of the vehicle, and behind the vehicle which are photographed by the corresponding cameras, a mapping-table determining unit for determining a mapping table to be used by detecting the number of passengers in back seats, and a mapping unit for reading image data from the image memories by using the mapping table corresponding to the number of passengers and mapping the read image data to a frame memory to display a top view image.