Estimation of Local Image Orientation
A number of methods have been proposed for computing or estimating an orientation representation from image data. These include
- Quadrature filter based methods
- The structure tensor
- Using a local polynomial approximation
- The Energy tensor
- The Boundary tensor
The first approach can be used both for the double angle representation (only 2D images) and the tensor representation, and the other methods compute a tensor representation of local orientation.
Read more about this topic: Orientation (computer Vision)
Famous quotes containing the words estimation, local, image and/or orientation:
“... it would be impossible for women to stand in higher estimation than they do here. The deference that is paid to them at all times and in all places has often occasioned me as much surprise as pleasure.”
—Frances Wright (1795–1852)
“The poet’s eye, in a fine frenzy rolling,
Doth glance from heaven to earth, from earth to heaven;
And as imagination bodies forth
The forms of things unknown, the poet’s pen
Turns them to shapes, and gives to airy nothing
A local habitation and a name.”
—William Shakespeare (1564–1616)
“For me, the child is a veritable image of becoming, of possibility, poised to reach towards what is not yet, towards a growing that cannot be predetermined or prescribed. I see her and I fill the space with others like her, risking, straining, wanting to find out, to ask their own questions, to experience a world that is shared.”
—Maxine Greene (20th century)
“Every orientation presupposes a disorientation.”
—Hans Magnus Enzensberger (b. 1929)