How to save draw_geometries output as png or jpg

[rupeshchandgude]

Is there any way to save output of draw_geometries as jpg or png format in python?

[Nerolf05]

This tutorial should be helpful: customized visualization then go to "Capture images in a customized animation"
The example shows the "vis.capture_screen_float_buffer(False)" Method to take a screenshot, which could be saved using the "plt.imsave()" Method.

[Nerolf05]

I have an additional question.
Is there a way to close my visualizer/figure? I want to make a movie of my pointcloud at different epochs using python.

Thanks in advance

[rupeshchandgude]

I have an additional question.
Is there a way to close my visualizer/figure? I want to make a movie of my pointcloud at different epochs using python.

Thanks in advance

Thanks @Nerolf05 .I also stuck in that point. I am able to store the image once I close the visualizer output. I have to deploy my code on server,where I may not able to close the visualizer output manually. I get to know how to hide window by (vis.create_window(visible = False)), but after loading pcd to it, if we run "vis.run()" command terminal gets hang.

[rupeshchandgude]

@Nerolf05 Currently I am able to store depth image, but the same logic fails for storing RGB image, it gives current screenshot as a image.
I use following code for depth :
vis = o3d.visualization.Visualizer() ; vis.create_window(visible = False) ; vis.add_geometry(pcd) ; depth = vis.capture_depth_float_buffer(True) ; plt.imshow(np.asarray(depth))
For RGB image :
vis = o3d.visualization.Visualizer() ; vis.create_window(visible = False) ; vis.add_geometry(pcd) ; img = vis.capture_screen_float_buffer(True); plt.imshow(np.asarray(img))

I use " ; " for new line, as code is print in wrong format. Sorry for that.

[Nerolf05]

@rupeshchandgude i use vis.capture_screen_image(path, do_render) to capture the screen.

I also tried to close the Visualizer with a second Process, but i wasnt able to do it successfully.

[rupeshchandgude]

@Nerolf05 Maybe we should try to find the way to close that window programmatically, so the code will go further to save output.

[rupeshchandgude]

@Nerolf05 Following function can be used to store image without visualizer output .

vis = o3d.visualization.Visualizer()
vis.create_window()
vis.add_geometry(pcd)
vis.update_geometry()
vis.poll_events()
vis.update_renderer()
vis.capture_screen_image(path)
vis.destroy_window()

[ArashJavan]

Hello, sorry, but i have to repoen this issue, because the proposed method by @Nerolf05 raises following exception:

    vis.update_geometry()
TypeError: update_geometry(): incompatible function arguments. The following argument types are supported:
    1. (self: open3d.open3d.visualization.Visualizer, arg0: open3d.open3d.geometry.Geometry) -> bool

[alainchau]

@ArashJavan The following should work on v0.10.0:

vis = o3d.visualization.Visualizer()
vis.create_window()
vis.add_geometry(pcd)
vis.update_geometry(pcd)
vis.poll_events()
vis.update_renderer()
vis.capture_screen_image(path)
vis.destroy_window()

[szat]

For anyone that wonders: to get the depth map into a local variable without displaying:

vis = o3d.visualization.Visualizer()
vis.create_window(visible=False)
vis.add_geometry(mesh)
vis.update_geometry(mesh)
vis.poll_events()
vis.update_renderer()
depth = vis.capture_depth_float_buffer(do_render=False)
vis.destroy_window()

[Stchena]

If your screenshots turn out dark/black/without anything, you're probably missing the do_render option inside your capture_screen_image call

[happyiminjay1]

For rendering as an image this is the final version.

vis = o3d.visualization.Visualizer()
vis.create_window(visible=False)
vis.add_geometry(mesh)
vis.update_geometry(mesh)
vis.poll_events()
vis.update_renderer()
vis.capture_screen_image('f{i}.png',do_render=True)
vis.destroy_window()