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get transformation from points

I'm reading this article about shape context algorithm so for example we have pairs of points [img]http://dl.dropbox.com/u/8841028/shape%20context/point_corespondence.png[/img] [img]http://dl.dropbox.com/u/8841028/shape%20context/transform_estimation.png[/img] what is mean by matrix of homogeneous coordinates?

get transformation from points

I'm reading this article about shape context algorithm so for example we have pairs of points [img]http://dl.dropbox.com/u/8841028/shape%20context/point_corespondence.png[/img] [img]http://dl.dropbox.com/u/8841028/shape%20context/transform_estimation.png[/img] http://dl.dropbox.com/u/8841028/shape%20context/point_corespondence.png http://dl.dropbox.com/u/8841028/shape%20context/transform_estimation.png what is mean by matrix of homogeneous coordinates?

get transformation from points

I'm reading this article about shape context algorithm so for example we have pairs of points http://dl.dropbox.com/u/8841028/shape%20context/point_corespondence.png http://dl.dropbox.com/u/8841028/shape%20context/transform_estimation.png what is mean by matrix of homogeneous coordinates?