DISTORTION CORRECTION METHOD FOR HEAD-UP DISPLAY AND DISTORTION CORRECTION DEVICE FOR HEAD-UP DISPLAY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To generate a head-up display (HUD) image without distortion with small calculation amount regardless of the position of a viewpoint.SOLUTION: An installation position of an imaging section 40 placed to be directed in a prescribed direction is detected at the position of a viewpoint 52 of a driver, a projection image Ip of a reference pattern Ir projected on a front visual field of the driver is captured by the imaging section 40, and a first coordinate correspondence relation between the reference pattern Ir and a point corresponding to the projection image Ip is calculated. A second coordinate corresponding relation between the reference pattern Ir at the actually detected position of the viewpoint 52 and a point corresponding to a projection image Ip which is predicted to be captured from the viewpoint 52 is estimated using the first coordinate correspondence relations obtained at a plurality of installation positions of the imaging section 40, and coordinate conversion tables Mip_x and Mip_y are generated to deform the reference pattern Ir so that the projection image Ip can be observed without distortion from the viewpoint 52. On the basis of the generated coordinate conversion tables, preliminarily deformed image information is generated and projected so as to generate a head-up display (HUD) image Ii.SELECTED DRAWING: Figure 1