Loading ply file incomplete

[geotyr]

Hello

I am trying to load a ply file which size is 736,412kb. It contains a point cloud with texture and normals.

In the console i have the following messages

[13:47:02] [I/O] File 'C:\SOT\z1npunts.ply' loaded successfully
[13:47:03] [VBO] VBO(s) (re)initialized for cloud 'z1npunts - Cloud' (399.53 Mb = 100.00% of points could be loaded)

In the top view I see white stripe in my model with missing points.

I have monitored the memory usage of the computer and it did not reach any limit.

I am using windows 7 with a 32bit computer and v2.6.0 CC version.

I am not sure if it is a file or a software problem.

Did anybody have a similar experience?

Thank you

[daniel]

Let me guess: does your cloud have very big coordinates? (typically above 10^6 in at least one dimension).

Otherwise you could try to deactivate the VBO(s) (it's in the display settings: 'Try to load point clouds on the GPU memory...') but it would be a bit strange.

[geotyr]

yes..UTM coordinates in X and Y..
Cloudcompare does the shift before the loading..
is it a problem of version of Cloudcompare?
I tried the VBO option and nothing changed

[geotyr]

ok
the y coordinates has no decimals and that is why I have the stripes
so it is a file problem
I still dont get why only 400Mb out of 720 are loaded...
thank you!!

[daniel]

How do you see the 400 Mb? Is it the increase in memory? If yes it's because CC uses 32 bits floating points representation internally while PLY use 64 bits.

[geotyr]

the 400Mb is what CC console says
[13:47:03] [VBO] VBO(s) (re)initialized for cloud 'z1npunts - Cloud' (399.53 Mb = 100.00% of points could be loaded)

the size of my file is of 720Mb

thanks

[daniel]

So indeed, it's only 3 * 4 = 12 bytes per points (instead of 3 * 8 = 24 in a PLY file). Colors should use the same size (1 byte per component). And normals (if there's any in the PLY file) are never transferred to the GPU.