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Height Being Forced

Coming back to Figure cap:Evaluation-going-below, there was a serious flaw that is associated with the function's insufficiently constrained form. It was possible for the model to be improved by 'cheating' and concealing parts of the data.

There was a period where in order to avoid data breaking and bumps shrivelling, a height was being forced to remain the same at the pinnacle of the bump. Several different schemes were attempted. At times, the position for insertion was projected from the mean and later it was derived from the model discrepancy. The results were not of very high quality at that stage and Figure [*] shows one such case. When run over a long period of time, a sharp tip can be observed which is due to points being forced to lie in a single fixed position. On other occasions, parts of the image are still being hidden. This basically results in gradual darkening of images subjected to registration.

Figure: Highest peak being retained in registration.


next up previous contents index
Next: Point Insertion Up: Attempted Solutions Previous: Speeding up Convergence   Contents   Index
2004-08-02