Just found a flaw in the ointment. I seems to me to be a non-logical PS
response. When there are no pixels selected, Edit=>Fill (Shift-F5) acts
like the whole image is selected. Instead of filling nothing, it fills
everything. So if you use the below action and the whole thing turns
red, it just means there are no pure white pixels, generally a good sign
if the histogram goes right up to the end. But disconcerting, to say the
least!
Moose
Moose wrote:
> OK, I just figured out how to do it with an Action:
>
> A. Create a saved color selection to select pure white.
> 1. Create an area of pure white; select and fill, extend canvas, etc.
> 2. Select=>Color Range
> 3. Click the little dropper on the pure white area.
> 3. Set Fuzziness to zero.
> 4. Click Save and save with a name that makes sense to you.
> 5. Click OK.
>
> B. Create an action to select and highlight pure whites.
> 1. Start recording a new Action, I called mine 100% White.
> - Optional, create a dup layer with an appropriate name.
> 2. Select=>Color Range
> 3. Click Load and pick the file created above.
> 4. OK
> 5. Edit=>Fill (Shift-F5)
> 6. Click Color and pick from the Pallette. I went with red.
> 7. Select=>Deselect (Ctrl-D) (Or create Layer Mask.)
> 8. Stop recording the macro.
>
> You now have an Action that will color all areas of pure white a
> different color, in my case, red in two clicks, (Quicker than some menu
> selections.). If you create a duplicate layer as part of the process,
> you can use it as a reference, to create a mask, etc., and delete it
> later when through.............
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