Kiyotaka Hirahara

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This paper proposes a novel notion of Epipolar Plane Range Image (EPRI). A line-scanning laser range sensor is mounted on the side of our data acquisition vehicle, repeating drawing horizontal scanning lines. Laminating the line range data along time axis, we can follow temporal continuity of horizontal cross section of the geometry seen from the scanner,(More)
Street-parking vehicles cause many problems in urban traffic situation: blinds area, traffic congestions, and so on. Detection method of street-parking vehicles are proposed. The proposed method is based on epipolar-plane image (EPI) analysis. First, our proposed method detects edges in EPIs by applying Hough transformation. By computing depth variation(More)
Street-parking vehicles in urban areas are causing various traffic problems, however, have been counted manually in the traffic census, including counting error. We propose two auto-detection methods; one is based on an epipolar-plane image analysis, using a line-scan camera, and the other is based on three-dimensional restoration, using a scanning laser(More)
It is important to assess street-parking vehicles causing traffic problems in urban areas. However, assessments are performed manually and at high cost. Developing a detection system of those vehicles is a top priority for reducing cost and avoiding human error. We propose a detection method using a laser-range finder and a line-scan camera. In the(More)
都市交通における問題の原因となる路上駐車車両の実態を把握することは重要である.現 在,路上駐車車両の実態把握は,調査員の手によって行われている.手動計測では,人件費 によるコストが高く,数え間違えを十分には防止できない.コスト削減と正確な車両台数の 計数のために,路上駐車車両の自動検出システムの構築は必須である.時空間ボリュームデ ータと2種類の断面から,2つのタイプの沿道パノラマ画像を導入する.ライン走査カメラを 用いた,路上駐車車両検出法はすでに提案してきた.この検出法は,ライン走査画像のEPI解 析に基づいている.検証実験の結果,検出率は76.9%であった.本論文では,レーザレンジフ ァインダを用いた,路上駐車車両の検出法を新たに提案する.提案手法では,計測されたレ(More)
It is important to assess street-parking vehicles causing traffic problems in urban areas, however, it is performed manually and at high cost. It is a top priority for reducing cost, to develop a detection system of those vehicles. We propose a detection method using a laser-range finder and a line-scan camera. In the detection method, two kinds of cluster(More)
Vehicles parked on streets make traffic problems in urban areas worse. We propose a method to detect those street-parking vehicles, using epipolar plane images (EPIs) acquired by a line scan camera, for traffic census. Our method is based on calculating the distance between the vehicles and the camera from the slope of the feature paths in an EPI. The(More)
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