User guide

Quantity One User Guide
12-36
Fig. 12-22. Selecting a filter size.
The available filter dimensions range from 3 x 3 pixels to 9 x 9 pixels. (See the
previous section for guidance on selecting a size.)
Because filtering is an irreversible process, a pop-up box will give you the
option of filtering the original image, creating a copy of the image to filter, or
cancelling out of this operation.
If you choose to copy and filter, you will be asked to enter a new name and/or
version number for the new copy before the operation is performed. Once this
information has been entered, the filtering operation will be performed.
12.11 Invert Data
The Invert checkbox in the Transform dialog box (section 4.6.b) inverts only
the appearance of the image. In some cases, however, you may want to invert
the actual image data.
If your image has light bands or spots on a dark background (i.e., the signal
intensity of the background is greater than the signal intensity of the sample),
you will need to use the Invert Data function before you can analyze the
image.
This function is reversible, so if you change your mind, you can always
switch it back.