Distortion and perspective correction of vector projection display

Abstract

The invention relates to distortion and perspective correction of vector projection display. A method to represent graphical images upon a transparent windscreen head up display of a vehicle describing an operational environment for the vehicle includes monitoring data describing critical information in the operational environment for the vehicle, monitoring a location of a viewpoint of an operator of the vehicle, determining a desired graphic to represent the critical information in a viewing space based upon the data and the viewpoint, transforming the desired graphic in the viewing space into a projected graphic in a projection space defined by the surface of the windscreen, transforming the projected graphic in the projection space into patterns of projected light in a projector space, and generating commands to a graphics projection system based upon the patterns of projected light.

Description

Cross References to Related Applications This application is a continuation-in-part of US Application No. 12 / 417077, filed April 2, 2009, which is incorporated herein by reference. technical field The present disclosure relates to graphic imaging on windshields in motor vehicles. Background technique The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. It is desirable to provide information to an operator of a vehicle in an efficient manner and to reduce operator fatigue. Display technologies are known in which light is projected onto a screen and the light is converted into a viewable display on the screen. Such displays for transportation use are known as head-up displays, where information is projected onto the sun visor, on a screen between the operator and the windscreen, or directly onto the windscreen. However, known systems that project light directly onto the windshield typica...

AI Technical Summary

Problems solved by technology

However, known systems that project light directly onto the windshield typically require coatings or materials that greatly reduce the transparency of the windshield

As a result, head-up displays are often restricted to a limited area on the windshield

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