A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ROAD SIGN BODY DETERIORATION DETECTION METHOD
PROBLEM TO BE SOLVED: To provide a road sign body deterioration detection method capable of discriminating a deterioration state by clarifying a determination criterion.SOLUTION: A road sign body deterioration detection method for detecting deterioration of a road sign body 3 constructed on a road surface includes: an imaging process of imaging the road sign body from obliquely above; a trimming process of quarrying a road sign body picture from a picture acquired in the imaging process on the basis of input coordinate information; a picture correction process of performing homography conversion to correct the road sign body picture to a bird's eye view picture; and a deterioration determination process of determining a deterioration state of the road sign body from a correction picture corrected by the picture correction process. Through the processes, deterioration of the road sign body 3 is detected.SELECTED DRAWING: Figure 3
【課題】判断基準を明確として、劣化状態を判別可能な道路標示体劣化検出方法を提供すること。【解決手段】路面に施工された道路標示体３の劣化を検出する道路標示体劣化検出方法。道路標示体を斜め上方から撮影する撮影工程と、入力された座標情報に基づいて撮影工程で取得された画像から道路標示体画像を切り出すトリミング工程と、道路標示体画像をホモグラフィ変換により俯瞰図状に補正する画像補正工程と、画像補正工程により補正された補正画像から道路標示体の劣化状態を判別する劣化判別工程と、を経て、道路標示体３の劣化を検出する。【選択図】図３
ROAD SIGN BODY DETERIORATION DETECTION METHOD
PROBLEM TO BE SOLVED: To provide a road sign body deterioration detection method capable of discriminating a deterioration state by clarifying a determination criterion.SOLUTION: A road sign body deterioration detection method for detecting deterioration of a road sign body 3 constructed on a road surface includes: an imaging process of imaging the road sign body from obliquely above; a trimming process of quarrying a road sign body picture from a picture acquired in the imaging process on the basis of input coordinate information; a picture correction process of performing homography conversion to correct the road sign body picture to a bird's eye view picture; and a deterioration determination process of determining a deterioration state of the road sign body from a correction picture corrected by the picture correction process. Through the processes, deterioration of the road sign body 3 is detected.SELECTED DRAWING: Figure 3
【課題】判断基準を明確として、劣化状態を判別可能な道路標示体劣化検出方法を提供すること。【解決手段】路面に施工された道路標示体３の劣化を検出する道路標示体劣化検出方法。道路標示体を斜め上方から撮影する撮影工程と、入力された座標情報に基づいて撮影工程で取得された画像から道路標示体画像を切り出すトリミング工程と、道路標示体画像をホモグラフィ変換により俯瞰図状に補正する画像補正工程と、画像補正工程により補正された補正画像から道路標示体の劣化状態を判別する劣化判別工程と、を経て、道路標示体３の劣化を検出する。【選択図】図３
ROAD SIGN BODY DETERIORATION DETECTION METHOD
道路標示体劣化検出方法
ASAI YASUHARU (author) / TAKEUCHI MASAHITO (author) / IDO AKIHIRO (author) / TABATA HIROYOSHI (author) / OGURI KOJI (author) / KAWANAKA HARUKI (author)
2017-01-26
Patent
Electronic Resource
Japanese
IPC:
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
,
CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
/
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
ROAD SURFACE DETERIORATION DETECTION DEVICE AND ROAD SURFACE DETERIORATION DETECTION METHOD
| European Patent Office | 2023