Mzigaib Posted June 2, 2015 Share Posted June 2, 2015 Is there a way to simulate the high pass filter from Photoshop in COPs? Or any advice of what would be the best way to sharpen your textures in COPs? Thanks! Quote Link to comment Share on other sites More sharing options...
edward Posted June 2, 2015 Share Posted June 2, 2015 Try the technique mentioned here http://www.gimp.org/tutorials/Sketch_Effect/ Or http://www.cyanogen.com/help/maximdl/High-Pass_Filtering.htm 2 Quote Link to comment Share on other sites More sharing options...
Mzigaib Posted June 2, 2015 Author Share Posted June 2, 2015 Awesome! I'll try that! Thanks! Quote Link to comment Share on other sites More sharing options...
malexander Posted June 4, 2015 Share Posted June 4, 2015 The Sharpen COP..? Quote Link to comment Share on other sites More sharing options...
theotheo Posted June 17, 2015 Share Posted June 17, 2015 Divide the original with a blurred version, then mulitply your result with the original. A basic sharpen filter is just a highpass multed with the original. 2 Quote Link to comment Share on other sites More sharing options...
Mzigaib Posted September 7, 2015 Author Share Posted September 7, 2015 Hi guys! Before I start I want to thank you for the previous tips, the highpass worked very well for me. I was also looking for a tip to replicate the "Soft Light" transfer but since we are already here I was wondering if anyone could also share any tips of how to replicate most or maybe all, I am sure that is possible, the transfers that Photoshop have that in COPs we don't have by default. Cheers! Quote Link to comment Share on other sites More sharing options...
anim Posted September 7, 2015 Share Posted September 7, 2015 probably easiest way is using VOP filter COP and http://www.simplefilter.de/en/basics/mixmods.html or Layer or Composite COP for common modes like Darken (Min), Lighten (Max), Multiply, Add, Subtract, Difference, Screen, ... 2 Quote Link to comment Share on other sites More sharing options...
Mzigaib Posted September 7, 2015 Author Share Posted September 7, 2015 (edited) Thanks dude! It sure helps a lot. Cheers! Edited September 7, 2015 by Mzigaib Quote Link to comment Share on other sites More sharing options...
f1480187 Posted June 1, 2016 Share Posted June 1, 2016 I know it is an old topic where problem was solved with an alternative method, but I searched for High Pass specifically and came here from google yesterday. I've got "photoshopic" High Pass filter results by subtracting blurred version from original and biasing by 0.5. The difference is in blurring radius parameter, which is computed by another formula in Photoshop. They are linearly dependent, however, you just need to use several times bigger numbers in Houdini. highpass.hipnc Quote Link to comment Share on other sites More sharing options...
malexander Posted June 1, 2016 Share Posted June 1, 2016 The Sharpen COP also does this with "Show Edges Only" enabled, though it centers around zero instead of 0.5. It also has a noise filter. Quote Link to comment Share on other sites More sharing options...
Druidl Posted June 6, 2016 Share Posted June 6, 2016 On 07/09/2015 at 6:23 AM, anim said: probably easiest way is using VOP filter COP and http://www.simplefilter.de/en/basics/mixmods.html or Layer or Composite COP for common modes like Darken (Min), Lighten (Max), Multiply, Add, Subtract, Difference, Screen, ... Hi, I saw this answer and was like , cool that should be easy, after few tries, I now know my cop knowlegde is 0, I cant even figure out how to import variables from the second input into vopcop2 filter. Quote Link to comment Share on other sites More sharing options...
f1480187 Posted June 6, 2016 Share Posted June 6, 2016 Use COP Input. Quote Link to comment Share on other sites More sharing options...
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