Open3d

Question

我已经使用 RGB+深度视频生成了多个点云，并希望将多个点云可视化为视频或动画。

目前我正在使用Python，我的部分代码如下：

for i in range(1,10)
       pcd = Track.create_pcd(i)
       o3d.visualization.draw_geometries([pcd])
       pcd_list.append(pcd)

当我使用draw_geometries或draw_geometries_with_animation_callback时，它们似乎无法显示点云列表：

o3d.visualization.draw_geometries([pcd_list])

或

def rotate_view(vis):
    ctr = vis.get_view_control()
    ctr.rotate(10.0, 0.0)
    return False
    
o3d.visualization.draw_geometries_with_animation_callback([pcd_list],rotate_view)

它给出了以下错误：

TypeError: draw_geometries(): incompatible function arguments. The following argument types are supported:

(geometry_list: List[open3d.open3d_pybind.geometry.Geometry], window_name: str = ‘Open3D’, width: int = 1920, height: int = 1080, left: int = 50, top: int = 50, point_show_normal: bool = False, mesh_show_wireframe: bool = False, mesh_show_back_face: bool = False) -> None

有没有例子说明如何将点云列表导出到视频中，比如设置查看器，并以 0.5 秒的 waitkey 显示每个点云，然后另存为视频文件 (.mp4/.阿维）？还要获取然后设置视频中点云的固定视点？

非常感谢！

Answer 1

您可以使用 Open3D Non-blocking visualization。

会是这样

vis = o3d.visualization.Visualizer()
vis.create_window()

# geometry is the point cloud used in your animaiton
geometry = o3d.geometry.PointCloud()
vis.add_geometry(geometry)

for i in range(icp_iteration):
    # now modify the points of your geometry
    # you can use whatever method suits you best, this is just an example
    geometry.points = pcd_list[i].points
    vis.update_geometry(geometry)
    vis.poll_events()
    vis.update_renderer()

Open3d - 将多个点云可视化为 video/animation

Open3d - visualizing multiple point clouds as a video/animation

python

video

point-clouds

save-as