x y coordinates of image pixels for an image outline
- To: mathgroup at smc.vnet.net
- Subject: [mg118077] x y coordinates of image pixels for an image outline
- From: william parr <willpowers69 at hotmail.com>
- Date: Tue, 12 Apr 2011 05:54:08 -0400 (EDT)
Dear Mathgroup, I think this problem is fairly straight forward, but I'm struggling with it! essentially, I want to; 1) determine/assign x y coordinate values to the black pixels in a binarised image. 2) select the outline black pixels (and get their x y coordinates) on each line of the image. This falls within a larger project of wanting to recover the outside outline (ie surface outline with x y coordinates) of a bone from a CT slice image. I would then probably aim to create a 3D point cloud for the external bone surface by assigning each slice a z coordinate value. However, unless anyone has a very clever (ie not processor intensive) way of of creating a polygon mesh from the 3D point cloud, I will probably export the point cloud for surface meshing in another program. thanks in advance, Will