Method for identifying pixel unit status of a matrix lighting system of a matrix lighting system
A pixel unit, recognition matrix technology, applied in character and pattern recognition, headlights, image enhancement, etc., can solve problems such as oncoming traffic glare, wrong 3D reconstruction, driver safety, and functional quality impact.
Active Publication Date: 2021-04-23
DR ING H C F PORSCHE AG
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Problems solved by technology
However, the corresponding error states of the pixel cells can have wide-ranging consequences in terms of driver safety and functional quality
This can lead to blinding of oncoming traffic without blinding high beams
In the case of active triangulation, incorrect 3D reconstructions may result from this error state
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[0029] A matrix lighting system, by means of which different lighting functions can be realized, such as a glare-free high beam function, usually includes two matrix lighting (ie left matrix lighting and right matrix lighting) lamps), the two matrix lamps have a pixel matrix with a plurality of pixel units that can be selectively activated or deactivated, preferably also dimmable. In order to use this matrix lighting system to be able to achieve the lighting function of "non-glare high beam", according to figure 1 In a first step 10 , an object in the foreground of the vehicle is detected by means of a vehicle-side camera (driver assistance camera) and an image processing system which is able to evaluate the camera image. The target can be, in particular, road users driving ahead or oncoming, which should not be dazzled by the matrix lighting system.
[0030] In a second step 20 , using the object positions, (nominal) pixel states for the matrix light of the matrix light syst...
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The invention relates to a method for identifying the state of the pixel units of a matrix lighting system of a matrix lighting system, comprising the following steps: a) by generating a low beam distribution by means of the matrix lighting system and measuring the low beam by means of a camera at least one reference point of the distribution to detect the wall onto which the light distribution can be projected, b) generate a pattern projection on the wall and embed structures in the light distribution of the pattern projection, which structures differ from adjacent structures, c ) extracting all the corner points of these pixel units from the pattern projection, d) determining the actual pixel neighbor relationship for each of the corner points obtained in step c), e) combining the corner points with the The pixel cells of the individual lighting segments are associated, f) it is checked in step e) whether at least one corner point cannot be associated with the associated pixel cell by comparing the actual pixel neighbor relationship with the target pixel neighbor relationship.
Description
technical field [0001] The invention relates to a method for identifying the state of a pixel unit of a matrix lighting system of a matrix lighting system. Background technique [0002] With the development of motor vehicles, so-called matrix light systems, which typically have two matrix lights, play an increasingly important role. The matrix lamp includes a pixel matrix that can be selectively activated or deactivated, and preferably also includes dimmable pixel units. It is contemplated that in the future and depending on the technology used, pixel resolutions of tens or hundreds of thousands of pixel units can be achieved. Completely different lighting functions can be realized with a matrix of pixels. One possible lighting function is, for example, the glare-free high-beam function, which involves not dazzling oncoming road users when the high-beam is activated head. In this case, a vehicle-side camera (driver assistance camera) is used which continuously records on...
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IPC IPC(8): H05B47/20
CPCH05B47/20G01M11/065G01M11/068G06T7/0004G06T2207/30121F21S41/153B60Q1/143B60Q2300/41B60Q2300/42B60Q11/005G06V20/584
Inventor G·本德尔曼C·施奈德
Owner DR ING H C F PORSCHE AG