'Edge & Texture Sharpening with Emboss Filter'
Clive R. Haynes FRPS
is an alternative method of image sharpening and one that permits some 'flexibility'.
It's a technique that is particularly appropriate in emphasising the 'edges' and
'textural content' of an image.
After Sharpening with 'Emboss'
the picture as a Background Layer
Change the 'Blend Mode' for this copy layer from 'Normal' to 'Hard Light'
Desaturate the copy layer (Ctrl + Shift + U)
Go to: Filter > Stylise > Emboss
Set 'Height' to 2 to 4 - You need to experiment to find what's best for the image.
Set the 'Amount' to, say, 100 (again experimentation is required)
Adjust the 'Angle' to give the best accentuation of the edges/texture in your judgement
Above: Emboss filter dialogue box
'Layer Mask' can be added to the layer- this enable parts of the 'sharpening layer'
to be selectively 'erased' (using black f/g colour) or 'restored' (using white
f/g colour) and a suitable brush.
A 'Curves' Adjustment Layer can be added and 'Clipped' (Ctrl + G) to the Sharpening Layer. The 'curve' can be set as an' S-curve' to increase the contrast and therefore the 'edge effect' of the 'Sharpening Layer'.
Experiment with other 'Blend Modes' in the 'Hard Light family':
('Hard Mix' is probably far too harsh)
Experiment with the amount of 'Opacity' for the 'Emboss' Layer.