Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
NCTM or The Math Forum.



Re: Generating Point Clouds
Posted:
Mar 3, 2011 2:33 PM


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 <f1c8b0e9711d4537a05ffabdfd4c8388@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



