Vehicle Display Image Enhancement for ASIL Data Integrity
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Solution Overview
Problem
Current methods for displaying ASIL-relevant data on motor vehicle display devices do not provide precise and detailed information about the exact display content, leading to potential misinterpretation or alteration of safety-critical information during image enhancement processes.
Innovation Solution
Introducing binary coding into the color bit information of pixels to classify and preserve the security rating of image data, preventing modifications during image enhancement by separating and accurately evaluating metadata at the pixel level, ensuring that safety-critical information remains unaltered and non-critical information can be optimized.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If image enhancement processes are applied to display data, then image quality and visual appeal are improved, but safety-critical information may be incorrectly modified or altered
Solution Approach 1:
The patent segments the display data into multiple layers: a background layer containing non-critical information that can be enhanced, and a foreground layer containing safety-critical information that remains unmodified. This segmentation allows differential processing where image enhancement algorithms only affect the background layer while the foreground layer with ASIL-relevant data is preserved in its original state, thus resolving the contradiction between improving image quality and maintaining safety-critical information integrity
Solution Approach 2:
The patent applies preliminary action by pre-classifying display elements into safety-critical and non-critical categories before the image enhancement process. Metadata is attached to each display element indicating its security classification, and this classification is used to control the enhancement process. By preparing the data structure and classification in advance, the system ensures that safety-critical elements are protected from modification while allowing enhancement of non-critical elements
2Device complexity
If all display data is processed with the same security level, then processing is simplified, but precise identification and preservation of safety-critical information is lost
Solution Approach 1:
The patent applies local quality by assigning different security classification levels to different regions or elements within the display data, rather than applying a uniform security level to all data. Each display element can have its own security classification metadata, allowing the system to precisely identify and handle safety-critical information differently from non-critical information. This localized approach enables precise security management while maintaining manageable processing complexity through automated classification rules
Data Source
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AI summary
The invention relates to a method for reliably displaying ASIL-related data on a display device of a motor vehicle comprising a transmitter unit, a receiver unit and a display unit to show the images generated by the receiver unit. According to the invention images having higher safety ratings by comparison with images having lower safety ratings are shown on the display unit with less modification by an image enhancement process. In the method, information about the safety rating of an image to be displayed by classifying binary coding in colour bit information of at least one pixel of the image to be displayed via a pixel matrix by means of the transmitter unit is introduced into a data stream, in order to control a change to the image during the image enhancement process in an image enhancer associated with a receiver unit which outputs image data for images of all safety ratings.