Work Vehicle Display Dynamic Distortion Correction

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Solution Overview

Problem

Conventional work vehicle display systems using wide-angle or ultrawide-angle cameras often suffer from significant visual distortion, which can obscure operationally significant objects in the periphery and reduce operator situational awareness, especially when panoramic views are scaled to fit the in-cabin display screen.

Innovation Solution

A work vehicle display system that applies a dynamic distortion-perspective (D/P) modification effect to the context camera feed, gradually adjusting parameters in response to operator preferences and operating conditions, to generate a visually-manipulated context view, which includes simulated focal length adjustments and barrel distortion effects, ensuring a clear and customizable display.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If wide-angle or ultrawide-angle cameras are used to provide panoramic views, then operator situational awareness is improved, but visual distortion increases obscuring operationally significant objects

Engineering Contradiction:

Improvesituational awarenessVSAvoidvisual distortion

Core Design Contradiction:

Loss of informationVSManufacturing precision

Solution Approach 1:

The system dynamically adjusts the distortion correction parameter based on the selected region of interest. When a operator selects a particular area for closer inspection, the system modifies the distortion correction level to optimize that specific view, transitioning from a static to a dynamic distortion correction approach that adapts to changing viewing requirements.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the distortion correction parameter as an adjustable variable. By allowing operators to modify the distortion correction level or select different regions of interest, the system transforms the fixed distortion parameter into a controllable variable that can be optimized for different operational contexts and viewing preferences.

Inventive Principle:

Principle #35Parameter changes

2Area of stationary object

If panoramic camera feeds are scaled to fit the display screen, then the full environment is visible, but visual distortion and confusion increase

Engineering Contradiction:

Improvefield of viewVSAvoidvisual clarity

Core Design Contradiction:

Area of stationary objectVSManufacturing precision

Solution Approach 1:

The panoramic view is segmented into multiple selectable regions of interest rather than displaying the entire panorama uniformly. Operators can focus on specific areas by selecting regions that contain operationally significant objects, dividing the broad panoramic view into manageable, distortion-optimized segments.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the panoramic view are treated with different distortion correction levels based on their importance. Regions containing operationally significant objects receive optimized distortion correction, while less critical areas maintain their original panoramic characteristics, creating local variations in image quality and distortion levels.

Inventive Principle:

Principle #3Local quality

3Manufacturing precision

If distortion correction is applied to reduce visual distortion, then image accuracy is improved, but peripheral objects may be lost or obscured

Engineering Contradiction:

Improveimage accuracyVSAvoidperipheral object detection

Core Design Contradiction:

Manufacturing precisionVSLoss of information

Solution Approach 1:

The distortion correction level is made dynamic rather than fixed. The system adjusts the correction parameter based on which region is currently selected for viewing, allowing operators to switch between highly corrected views for central objects and less corrected views that preserve peripheral information when needed.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system provides operators with control over distortion correction levels, allowing them to adjust based on their current operational needs. This feedback mechanism enables operators to balance between image accuracy and peripheral object detection by selecting appropriate correction levels or regions of interest.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS11590892B2Work vehicle display systems and methods for generating visually-manipulated context views

Publication Date: 2023.02.28 DEERE & CO

AI summary

A work vehicle display system utilized in piloting a work vehicle includes a display device having a display screen, a context camera mounted to the work vehicle and positioned to capture a context camera feed of the work vehicle's exterior environment, and a controller architecture. The controller architecture is configured to: (i) receive the context camera feed from the context camera; (ii) generate a visually-manipulated context view utilizing the context camera feed; and (iii) output the visually-manipulated context view to the display device for presentation on the display screen. In the process of generating the visually-manipulated context view, the controller architecture applies a dynamic distortion-perspective (D/P) modification effect to the context camera feed, while gradually adjusting a parameter of the dynamic D/P modification effect in response to changes in operator viewing preferences or in response to changes in a current operating condition of the work vehicle.