Vehicle Rear-View Camera Cutout Position Adjustment
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Solution Overview
Problem
Image display devices in vehicles often experience delays in updating the rear-view image, leading to discomfort for drivers, especially when the vehicle changes orientation rapidly, such as when driving on curves at high speeds, as the displayed image may not accurately reflect the current view behind the vehicle.
Innovation Solution
An image display device with a camera and an image cutouter that adjusts the cutout position of the image based on the vehicle's orientation change, moving the cutout position in a direction opposite to the movement of the display object within the image, ensuring that the image displayed is updated to reflect the current view behind the vehicle, even after a delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the image is processed and displayed after being taken by the camera, then the image can be displayed on the display, but image delay occurs making it impossible for the cutout image to follow sharp changes in vehicle orientation
Solution Approach 1:
The patent applies preliminary action by predicting the future position of display objects based on current vehicle orientation and movement trends. The image cutouter pre-adjusts the cutout position in the stored image to compensate for expected orientation changes during the processing delay period, ensuring the displayed image accurately reflects the view that would be captured at the display time rather than the capture time.
2Reliability
If the cutout position is adjusted to compensate for vehicle orientation change, then the displayed image follows the vehicle orientation better, but the device complexity increases
Solution Approach 1:
The patent changes the parameter of the cutout position dynamically based on vehicle orientation data. The image cutouter adjusts the cutout position coordinates in the stored image according to the detected vehicle orientation change, allowing the system to maintain image accuracy without requiring additional hardware components beyond the camera, processor, and display.
3Loss of time
If the image processing is performed quickly, then the image delay is reduced, but the manufacturing precision of the cutout position may be compromised
Solution Approach 1:
The system performs preliminary calculation of the adjusted cutout position using vehicle orientation data available at the time of image capture. By pre-computing the position adjustment based on predicted orientation changes, the system maintains high cutout precision without requiring extended processing time, as the adjustment calculation is performed efficiently using available sensor data.
Data Source
AI summary
An image display device includes: a camera mounted on a vehicle and configured to take an image representing a view behind the vehicle; an image cutouter configured to cut out a second image, from a first image taken by the camera, based on a reference cutout position in the first image; and a display configured to display the second image cut out by the image cutouter. The image cutouter is configured to, when a display object in the first image is to move in a first direction due to change of an orientation of the vehicle, execute a processing in which a cutout position for the second image at a first time point is moved from the reference cutout position in a second direction opposite to the first direction.