next up previous contents index
Next:   BRAGGS' EQUATION Up: The KEYBOARD INTERFACE: Command Previous:   BANNER

  BLUR

Blurs (smoothes) data in the ROI by convolution with a top-hat function of user specified size16. The output is in the memory.

The user specifies the number of pixels which define the top-hat rectangle. If the number of pixels if even then the centre of gravity of peaks will be slightly changed (right and up). If the number is odd then the effect of the convolution is symmetric and no change in centre of gravity occurs.



Andrew Hammersley
2004-01-09