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    • 1. 发明申请
    • PLANE DETECTOR, PLANE DETECTING METHOD, AND ROBOT APPARATUS WITH PLANE DETECTOR
    • 平面检测器,平面检测方法和机器人与平面检测器
    • WO2005088244A9
    • 2008-03-13
    • PCT/JP2005004839
    • 2005-03-17
    • SONY CORPGUTMANN STEFFENFUKUCHI MASAKISABE KOHTAROKAWAMOTO KENTA
    • GUTMANN STEFFENFUKUCHI MASAKISABE KOHTAROKAWAMOTO KENTA
    • G01B11/24B62D57/024G06K9/00G06T1/00G06T7/00
    • G06K9/00664B62D57/024G06K9/00201G06T7/13G06T7/73G06T2207/30252
    • A plane detecting unit (3) of a plane detector has a line segment extracting section (4) which selects a group of distance data points on the same plane from among distance data points forming an image and extracts line segments from the distance data point group and a region expanding section (5) which detects one or more plane regions present in the image from a line segment group of all the line segments extracted by the line segment extracting section (4). The line segment extracting section (4) draws a line segment (L1) connecting the ends of the distance data point group, seeks a point of interest (brk) from which the distance to the line segment (L1) is the largest, divides the data point group at the point of interest if the distance is a predetermined value or more, determines a line segment (L2) by the least squares method if the distance is below the predetermined value, judges that the line segment is of a zigzag shape if a predetermined number of data points are continuously present on one side of the line segment (L2), divides the data point group at the point of interest (brk), and repeats the above processings. With this, planes are correctly detected at a time from the distance data including measurement noise robustly against noise.
    • 平面检测器的平面检测单元(3)具有线段提取部(4),其从形成图像的距离数据点中选择同一平面上的一组距离数据点,并从距离数据点组提取线段 以及区域扩展部(5),其从由所述线段提取部(4)提取的所有线段的线段组检测所述图像中存在的一个以上的平面区域。 线段提取部分(4)绘制连接距离数据点组的端部的线段(L1),寻找距离线段(L1)的距离最大的兴趣点(brk) 如果距离是预定值或更大,则在感兴趣点处的数据点组,如果距离低于预定值,则通过最小二乘法确定线段(L2),判断线段是否为之字形,如果 在线段(L2)的一侧上连续存在预定数量的数据点,在兴趣点(brk)处划分数据点组,并重复上述处理。 由此,可以从包括测量噪声的距离数据一次正确地检测到平面,以抵抗噪声。