Notice of RetractionStudy on the high-accurate of the boundary location based on arc tangent function

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

The high-precision positioning of obvious target for the image edge, we usually use line diffusion function model, when we generally use normal function, in this paper, we use simple arc tangent function instead of normal function for positioning the image edge, the mathematical model of this method is simple and has fast calculation, getting the gray value of the phase as observations for adjustment calculation directly, to obtain high precision positioning of the edge and to achieve the purpose of positioning. By comparing the computing precision and computing time of two functions shows that arc tangent function can be used boundary location.