PROBLEM TO BE SOLVED: To provide an on-road sign detection device capable of handling changes in width of white lines in a distortion image in which an overhead view image is subjected to a distortion conversion.SOLUTION: The on-road sign detection device performs the steps including: picking up an image of a road surface of an area around a vehicle; generating an overhead view image by carrying out a viewpoint conversion based on the imaging position on the picked up image; setting a road sign detection area in a predetermined range on the overhead view image; generating a distortion image by executing a distortion conversion on the image in the on-road sign detection area to convert a rectangular shape to a parallelogram; and detecting the position of the on-road sign using the distortion image.SELECTED DRAWING: Figure 3
【課題】俯瞰画像を歪み変換した歪み画像において、白線幅の変化に対処することができる路面標示検出装置を提供する。【解決手段】路面標示検出装置は、車両の周囲の路面領域を画像として撮像し、撮像した画像に対し、撮像位置に基づいて視点変換を行うことで俯瞰画像を生成し、俯瞰画像上の所定の範囲に路面標示検出領域を設定し、路面標示検出領域内の画像を長方形から平行四辺形に歪み変換することで歪み画像を生成し、歪み画像を用いて、路面標示の位置を検出する。【選択図】図3
ON-ROAD SIGN DETECTION DEVICE AND ROAD SURFACE SIGN DETECTION METHOD
路面標示検出装置及び路面標示検出方法
22.12.2016
Patent
Elektronische Ressource
Japanisch
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