Head-Up Display Boundary Correction to Reduce Distortion and Light Leakage
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Solution Overview
Problem
Conventional head-up displays suffer from image distortion and light leakage due to projection surface irregularities, leading to suboptimal display quality.
Innovation Solution
A method and system that corrects image boundaries based on projection surface distortion data, adjusts brightness values for display regions, and sets non-display regions to zero to mitigate light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display module projects image onto the projection surface, then the display function is achieved, but light leakage occurs in non-display regions due to surface distortion
Solution Approach 1:
The patent applies local quality by differentiating between display regions and non-display regions. The control module identifies specific sub-light-emitting regions that correspond to the image boundary and adjusts their brightness differently from other regions. By setting brightness values to 0 in non-display regions while maintaining or enhancing brightness in display regions, the system achieves localized quality control that eliminates light leakage without affecting the overall display function.
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting the brightness values of sub-light-emitting regions based on the corrected image boundary. The control module modifies the light emitting data to increase brightness values for first sub-light-emitting regions (display regions) and set brightness values to 0 for second sub-light-emitting regions (non-display regions). This parameter adjustment resolves the contradiction by changing the brightness parameter spatially across different regions of the display module.
2Ease of operation
If the projection surface has distorted or uneven surface, then the display can be projected, but the display region becomes deformed
Solution Approach 1:
The patent applies preliminary action by correcting the image boundary before generating the light emitting data. The control module receives the original image, corrects the image boundary based on projection surface distortion data to generate a corrected image, and then uses this corrected image to determine the sub-light-emitting regions and adjust brightness values. This preliminary correction of the image boundary compensates for the distorted projection surface, ensuring that the final display region maintains the correct shape despite the uneven projection surface.
3Illumination intensity
If brightness is increased in display regions, then image clarity improves, but energy consumption increases
Solution Approach 1:
The patent applies local quality by selectively adjusting brightness only in the sub-light-emitting regions that correspond to the corrected image boundary, rather than increasing brightness across the entire display module. The control module identifies specific first sub-light-emitting regions and increases their brightness values only as needed for clear image display, while setting brightness to 0 in non-display regions. This localized brightness adjustment improves image clarity in the necessary areas without proportionally increasing overall energy consumption.
Data Source
AI summary
Provided are a display method of a head-up display and a head-up display. The display method of the head-up display includes the following steps: an original image is received; an image boundary of the original image is corrected based on projection surface distortion data to generate a corrected image; multiple first sub-light-emitting regions corresponding to an image boundary of the corrected image are determined; light emitting data are adjusted based on display boundary data to increase brightness values corresponding to the multiple first sub-light-emitting regions in the light emitting data, and brightness values of multiple second sub-light-emitting regions corresponding to a non-display region in the light emitting data are set as 0; and a display module is driven based on the corrected image and an adjusted light emitting data. The display method of the head-up display and the head-up display of the disclosure may achieve good display effects.