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Showing posts 1 - 9 of 9, (reverse)
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09/17/2005 09:56:44 PM · #1
Can't find if this has been asked before. Can 'threshold' (drop out all middle tones) be used in the competition under basic editing rules??
09/17/2005 10:02:54 PM · #2
Yup :-) Always assuming you apply threshold to the entire image, not a selected portion of it.

R.
09/17/2005 10:03:51 PM · #3
I use it all the time to fine tune exposure issues. It rocks.
09/18/2005 11:55:19 PM · #4
I've had fun with turning photographs into drawings using threshold. For example, turning this:

' . substr('//img311.imageshack.us/img311/6387/kittyresize9yo.th.jpg', strrpos('//img311.imageshack.us/img311/6387/kittyresize9yo.th.jpg', '/') + 1) . '

Into this:

' . substr('//img253.imageshack.us/img253/6058/kittypencilwstrokesresize0qs.th.jpg', strrpos('//img253.imageshack.us/img253/6058/kittypencilwstrokesresize0qs.th.jpg', '/') + 1) . '

To get the pencil stroke effect, I created a layer with grayscale noise, applied threshold to that to get white spots on a black background, then motion-blurred it and made it visible only over the dark areas of the original layer (I think this was a layer-mode effect, I forget which).

I wonder how this would do on a challenge (minus the extra layer, of course). Actually, I should print this out and paste it in a sketchbook and tell people I drew it. ;)
09/18/2005 11:58:50 PM · #5
No threshold can't be used in Basic. The rules say:
Adjustment Layers must be applied in Normal mode. All other types of layers (including those that contain pixel data or masks) and all other blending methods (modes) are prohibited. Changing the opacity of an Adjustment Layer is permitted.
09/19/2005 03:12:11 AM · #6
Originally posted by rjkstesch:

No threshold can't be used in Basic. The rules say:
Adjustment Layers must be applied in Normal mode. All other types of layers (including those that contain pixel data or masks) and all other blending methods (modes) are prohibited. Changing the opacity of an Adjustment Layer is permitted.

Threshold layers are adjustment layers.

David
09/19/2005 05:03:45 AM · #7
Originally posted by The_Itinerant:

I've had fun with turning photographs into drawings using threshold. For example, turning this:

' . substr('//img311.imageshack.us/img311/6387/kittyresize9yo.th.jpg', strrpos('//img311.imageshack.us/img311/6387/kittyresize9yo.th.jpg', '/') + 1) . '

Into this:

' . substr('//img253.imageshack.us/img253/6058/kittypencilwstrokesresize0qs.th.jpg', strrpos('//img253.imageshack.us/img253/6058/kittypencilwstrokesresize0qs.th.jpg', '/') + 1) . '

To get the pencil stroke effect, I created a layer with grayscale noise, applied threshold to that to get white spots on a black background, then motion-blurred it and made it visible only over the dark areas of the original layer (I think this was a layer-mode effect, I forget which).

I wonder how this would do on a challenge (minus the extra layer, of course). Actually, I should print this out and paste it in a sketchbook and tell people I drew it. ;)


How do you create a layer with grayscale noise?
09/19/2005 06:07:07 AM · #8
Originally posted by suemack:

How do you create a layer with grayscale noise?

Create a new layer
Fill with desired color (white, black or grey would work well for this)
Filters/Noise/Add Noise...
Adjust to preference.

David
09/19/2005 07:11:33 AM · #9
Thanks David, will give it a go :-)
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