Features “Grow” and “similar”

The functions “Grow” and “similar”, which we find under the “Select” button in the menu bar are features by which we can expand on the already selected area based on a similar color.

How similar the color should be depends on the value in the “Tolerance” box.  In other words, just as the “Wand” tool takes the value in this field into account, the “Grow” and “similar” functions also take the value in this box into account.

If you have selected a part of the picture (1), it does not matter with what tool and click the “Grow”, then the selection is extended to all adjacent pixels (2) that satisfy the conditions.

If you choose the option “similar”, then the selection will be extended to all pixels in the image (3) which satisfy the conditions.
You set the conditions, as I mentioned previously, in the “Tolerance”.

Another tip.
If all the pixels that you want to select are selected, you can repeat both the functions several times.

Save Selection

When a time-consuming selection is made or you have made a selection that you want to use again later, you can save it.

Just click the “Select” button in the menu bar and choose “Save Selection” in the drop-down menu.

This opens the dialog “Save Selection” (1) where you select a name and click the OK button.

A second way is the “Save Selection as Channel” (2) at the bottom of the “Channels” panel.

If you wish to add more parts to your saved selection later, click again the “Select” button in the menu bar and choose “Save Selection” in the drop-down menu.

In the dialog that appears (3) choose the selection already stored in the “Channel” and select the option “Add to Channel”.

Load Selection

If we want to load a selection, we have two possibilities. One, you can reload the image that you have created and two, you can load it into another photo.

To load a selection back in the same picture, click the “Select” button in the menu bar and choose “Load Selection” from the drop-down menu.

In the dialog that appears, choose the selection by clicking the downward pointing arrow next to the “Channel” box and click the OK button.

If you want to load a selection into another photo you just do the same, the only requirement is that the picture in which you want to load the selection, should precisely have the same dimensions as the picture from which the selection is made and stored.

Important!
When I talk about size, I’m talking about the size in PIXELS. Not in cm, mm, inches or whatever.PIXELS it is.

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