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Topic: Generating Point Clouds
Replies: 8   Last Post: Mar 14, 2011 2:03 PM

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Navaneetha Kannan Viswanathan

Posts: 14
Registered: 1/19/11
Re: Generating Point Clouds
Posted: Mar 3, 2011 2:33 PM
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Point Clouds: In this regard, I meant the collection of all points where the Laser has traced in my set of images. Is it possible to plot the pixels ( high intensity pixels, traced by laser in every single image) as points in a 3d space.?

ImageAnalyst <imageanalyst@mailinator.com> wrote in message <f1c8b0e9-711d-4537-a05f-fabdfd4c8388@b13g2000prf.googlegroups.com>...
> First of all, put something dark behind your subject so you don't have
> all that background clutter. Then use thresholding to find the laser
> line. You might find it useful to extract out the individual color
> channels and use one of them. The red channel has a much wider line
> than the blue channel. Maybe one or the other will work better.
> And I ask again:
> "Define "point cloud" - do you mean you want the (row, column)
> "coordinate pair of every pixel in your area?
> See my demos:
> http://www.mathworks.com/matlabcentral/fileexchange/authors/31862

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