KITTI数据集标签

KITTI detection数据集标签

数据集标签实例:
微信截图_20200730120209.png

标签含义:

Values Name Description
1 type Describes the type of object: ‘Car’, ‘Van’, ‘Truck’,’Pedestrian’, ‘Person_sitting’, ‘Cyclist’, ‘Tram’,’Misc’ or ‘DontCare’
1 truncated Float from 0 (non-truncated) to 1 (truncated), where truncated refers to the object leaving image boundaries
1 occluded Integer (0,1,2,3) indicating occlusion state: 0 = fully visible, 1 = partly occluded, 2 = largely occluded, 3 = unknown
1 alpha Observation angle of object, ranging [-pi..pi]
4 bbox 2D bounding box of object in the image (0-based index): contains left, top, right, bottom pixel coordinates
3 dimensions 3D object dimensions: height, width, length (in meters)
3 location 3D object location x,y,z in camera coordinates (in meters)
1 rotation_y Rotation ry around Y-axis in camera coordinates [-pi..pi]
1 score Only for results: Float, indicating confidence in detection, needed for p/r curves, higher is better.

第1个字符串:代表物体类别

‘Car’, ‘Van’, ‘Truck’,’Pedestrian’, ‘Person_sitting’, ‘Cyclist’,’Tram’, ‘Misc’ or ‘DontCare’

注意,’DontCare’ 标签表示该区域没有被标注,比如由于目标物体距离激光雷达太远。为了防止在评估过程中(主要是计算precision),将本来是目标物体但是因为某些原因而没有标注的区域统计为假阳性(false positives),评估脚本会自动忽略’DontCare’ 区域的预测结果。

第2个数:代表物体是否被截断

从0(非截断)到1(截断)浮动,其中truncated指离开图像边界的对象

第3个数:代表物体是否被遮挡

整数0,1,2,3表示被遮挡的程度

0:完全可见 1:小部分遮挡 2:大部分遮挡 3:完全遮挡(unknown)

第4个数:alpha,物体的观察角度,范围:-pi~pi

是在相机坐标系下,以相机原点为中心,相机原点到物体中心的连线为半径,将物体绕相机y轴旋转至相机z轴,此时物体方向与相机x轴的夹角

第5~8这4个数:物体的2维边界框

xmin,ymin,xmax,ymax

第9~11这3个数:3维物体的尺寸

高、宽、长(单位:米)

第12~14这3个数:3维物体的位置

x,y,z(在照相机坐标系下,单位:米)

第15个数:3维物体的空间方向:rotation_y

在照相机坐标系下,物体的全局方向角(物体前进方向与相机坐标系x轴的夹角),范围:-pi~pi

第16个数:检测的置信度

作者

John Doe

发布于

2020-03-03

更新于

2020-07-31

许可协议

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