vis = o3d.visualization.Visualizer() vis.create_window() 修改
时间: 2023-06-19 15:03:23 浏览: 829
这行代码的作用是创建一个可视化窗口。如果要修改窗口的大小或者标题,可以在`create_window()`函数中传入相应的参数。例如:
```python
vis.create_window(
width=800, height=600,
window_name='My Window'
)
```
这样就会创建一个宽度为800,高度为600,标题为"My Window"的窗口。
相关问题
import open3d as o3d import numpy as np pcd = o3d.io.read_point_cloud("data.pcd") points = np.asarray(pcd.points) bbox = pcd.get_axis_aligned_bounding_box() bbox_points = np.asarray(bbox.get_box_points()) vis = o3d.visualization.Visualizer() vis.create_window() vis.add_geometry(pcd) bbox_lines = [[0,1],[1,2],[2,3],[3,0], [4,5],[5,6],[6,7],[7,4], [0,4],[1,5],[2,6],[3,7]] bbox_colors = [[1,0,0] for i in range(len(bbox_lines))] line_set = o3d.geometry.LineSet( points=o3d.utility.Vector3dVector(bbox_points), lines=o3d.utility.Vector2iVector(bbox_lines), ) line_set.colors = o3d.utility.Vector3dVector(bbox_colors) vis.add_geometry(line_set) labels = np.zeros(points.shape[0]) eps = 0.1 min_points = 10 for i in range(points.shape[0]): if labels[i] != 0: continue neighbors = np.where(np.sum((points - points[i])2, axis=1) < eps2)[0] if neighbors.shape[0] < min_points: labels[i] = -1 else: labels[neighbors] = i+1 cluster_colors = [[np.random.uniform(0, 1), np.random.uniform(0, 1), np.random.uniform(0, 1)] for i in range(np.max(labels))] for i in range(np.max(labels)): if i == -1: continue cluster_points = points[labels==i,:] cluster_pcd = o3d.geometry.PointCloud() cluster_pcd.points = o3d.utility.Vector3dVector(cluster_points) cluster_pcd.paint_uniform_color(cluster_colors[i]) vis.add_geometry(cluster_pcd) vis.run() vis.destroy_window() open3d未响应
这段代码使用了Open3D库来读取点云数据,并进行基于DBSCAN算法的聚类,并且还使用了Open3D的可视化功能来显示点云和聚类结果。但是,你提供的代码有一些语法错误,可能导致Open3D无法运行。你可以尝试以下修改:
1. 在第9行之前添加 `import open3d.visualization`,以便使用Open3D的可视化功能。
2. 在第22行之前添加 `import random`,以便使用 `np.random.uniform()` 函数。
3. 在第14行中,将 `(points - points[i])2` 修改为 `(points - points[i])**2`,以便进行平方运算。
在修改完成后,你可以尝试重新运行代码,并检查是否能够正常运行。如果仍然有问题,你可以提供更详细的错误信息或代码上下文,以便更好地帮助你解决问题。
import pyntcloud from scipy.spatial import cKDTree import numpy as np def pass_through(cloud, limit_min=-10, limit_max=10, filter_value_name="z"): """ 直通滤波 :param cloud:输入点云 :param limit_min: 滤波条件的最小值 :param limit_max: 滤波条件的最大值 :param filter_value_name: 滤波字段(x or y or z) :return: 位于[limit_min,limit_max]范围的点云 """ points = np.asarray(cloud.points) if filter_value_name == "x": ind = np.where((points[:, 0] >= limit_min) & (points[:, 0] <= limit_max))[0] x_cloud = pcd.select_by_index(ind) return x_cloud elif filter_value_name == "y": ind = np.where((points[:, 1] >= limit_min) & (points[:, 1] <= limit_max))[0] y_cloud = cloud.select_by_index(ind) return y_cloud elif filter_value_name == "z": ind = np.where((points[:, 2] >= limit_min) & (points[:, 2] <= limit_max))[0] z_cloud = pcd.select_by_index(ind) return z_cloud # -------------------读取点云数据并可视化------------------------ # 读取原始点云数据 cloud_before=pyntcloud.PyntCloud.from_file("./data/pcd/000000.pcd") # 进行点云下采样/滤波操作 # 假设得到了处理后的点云(下采样或滤波后) pcd = o3d.io.read_point_cloud("./data/pcd/000000.pcd") filtered_cloud = pass_through(pcd, limit_min=-10, limit_max=10, filter_value_name="x") # 获得原始点云和处理后的点云的坐标值 points_before = cloud_before.points.values points_after = filtered_cloud.points.values # 使用KD-Tree将两组点云数据匹配对应,求解最近邻距离 kdtree_before = cKDTree(points_before) distances, _ = kdtree_before.query(points_after) # 计算平均距离误差 ade = np.mean(distances) print("滤波前后的点云平均距离误差为:", ade) o3d.visualization.draw_geometries([filtered_cloud], window_name="直通滤波", width=1024, height=768, left=50, top=50, mesh_show_back_face=False) # 创建一个窗口,设置窗口大小为800x600 vis = o3d.visualization.Visualizer() vis.create_window(width=800, height=600) # 设置视角点 ctr = vis.get_view_control() ctr.set_lookat([0, 0, 0]) ctr.set_up([0, 0, 1]) ctr.set_front([1, 0, 0])这段程序有什么问题吗
在这段程序中,有一个变量名写错了,`pcd`应该是`cloud`。具体来说,函数`pass_through`中的第一行将输入的点云转换成了`numpy`数组,变量名为`points`。而在后面的三个if语句中,分别使用了`pcd`而不是`cloud`来选择子集。这可能会导致`NameError`异常。因此,需要将`pcd`改为`cloud`。修改后的代码如下:
```
import pyntcloud
from scipy.spatial import cKDTree
import numpy as np
import open3d as o3d
def pass_through(cloud, limit_min=-10, limit_max=10, filter_value_name="z"):
"""
直通滤波
:param cloud:输入点云
:param limit_min: 滤波条件的最小值
:param limit_max: 滤波条件的最大值
:param filter_value_name: 滤波字段(x or y or z)
:return: 位于[limit_min,limit_max]范围的点云
"""
points = np.asarray(cloud.points)
if filter_value_name == "x":
ind = np.where((points[:, 0] >= limit_min) & (points[:, 0] <= limit_max))[0]
x_cloud = cloud.select_by_index(ind)
return x_cloud
elif filter_value_name == "y":
ind = np.where((points[:, 1] >= limit_min) & (points[:, 1] <= limit_max))[0]
y_cloud = cloud.select_by_index(ind)
return y_cloud
elif filter_value_name == "z":
ind = np.where((points[:, 2] >= limit_min) & (points[:, 2] <= limit_max))[0]
z_cloud = cloud.select_by_index(ind)
return z_cloud
# -------------------读取点云数据并可视化------------------------
# 读取原始点云数据
cloud_before = pyntcloud.PyntCloud.from_file("./data/pcd/000000.pcd")
# 进行点云下采样/滤波操作
# 假设得到了处理后的点云(下采样或滤波后)
cloud = o3d.io.read_point_cloud("./data/pcd/000000.pcd")
filtered_cloud = pass_through(cloud, limit_min=-10, limit_max=10, filter_value_name="x")
# 获得原始点云和处理后的点云的坐标值
points_before = cloud_before.points.values
points_after = filtered_cloud.points.values
# 使用KD-Tree将两组点云数据匹配对应,求解最近邻距离
kdtree_before = cKDTree(points_before)
distances, _ = kdtree_before.query(points_after)
# 计算平均距离误差
ade = np.mean(distances)
print("滤波前后的点云平均距离误差为:", ade)
o3d.visualization.draw_geometries([filtered_cloud], window_name="直通滤波", width=1024, height=768, mesh_show_back_face=False)
# 创建一个窗口,设置窗口大小为800x600
vis = o3d.visualization.Visualizer()
vis.create_window(width=800, height=600)
# 设置视角点
ctr = vis.get_view_control()
ctr.set_lookat([0, 0, 0])
ctr.set_up([0, 0, 1])
ctr.set_front([1, 0, 0])
```
阅读全文
相关推荐
















