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Question about displacement maps [Resolved]

Sky HndxSky Hndx Posts: 142
edited May 2015 in Daz Studio Discussion

I’ve been fiddling with an old character I created using M4 in DS 4.7. I wanted it to have a scar running almost diagonally down its face. I created a simple displacement map from the face texture I made for the character. I applied the displacement to the face and lips and set the strength to 6.0% and minimum displacement to 3.00%

The face and lips had a bump map that seems to be set to a default, I made no changes to it. Its settings were: Bump map strength 50%. Negative bump -0.010. Positive bump 0.010

When I made a test render the scar came out fine enough creating an indentation in the face simulating a scar. But the rest of the face sort of ballooned up. The eyelids, lips and nose looked swollen as if the guy is squinting and has a bad case of allergies or got knocked around a bit and received more than just a scar.

So I changed the displacement settings and set the minimum to 0.00 and maximum to 3.00. When I rendered the face remained its normal shape and the scar came upward. Now instead of a scar it looks like a scab.

So I was wondering is there any other way I can get the displacement map to create the indentation instead of a protrusion? Without having the rest of the face swell up.

I suppose I can do with it looking like a scab but the scar effect is really what I wanted.

The top of the picture is the displacement maximum set to 3.00 creating the scab effect and the bump map. The bottom of the picture is the displacement minimum set to 3.00 and a bit higher creating the scar but also causing the facial features to swell up.

faces.jpg
711 x 720 - 50K
Post edited by Sky Hndx on

Comments

  • SimonJMSimonJM Posts: 5,997
    edited December 1969

    How did you save the map, as .png, .jpg, .tif?

  • Richard HaseltineRichard Haseltine Posts: 102,344
    edited December 1969

    Set the minimum value (black) to 0 and the maximum (white) to -however deep you want the scar to be. Set the strength to 100%.

  • Sky HndxSky Hndx Posts: 142
    edited December 1969

    SimonJM said:
    How did you save the map, as .png, .jpg, .tif?

    I saved it as a .jpg. I didn't know file type could have an affect on the outcome. Just something else I may have to look up.

  • Sky HndxSky Hndx Posts: 142
    edited December 1969

    Richard Haseltine said:
    Set the minimum value (black) to 0 and the maximum (white) to -however deep you want the scar to be. Set the strength to 100%.

    Alrightie, that did it thanks. I missed the minus symbol in your reply and was scratching my head for a bit until I saw it. :P

  • SimonJMSimonJM Posts: 5,997
    edited December 1969

    Sky_ said:
    SimonJM said:
    How did you save the map, as .png, .jpg, .tif?

    I saved it as a .jpg. I didn't know file type could have an affect on the outcome. Just something else I may have to look up.
    jpeg is 'lossy' and you can end up with, instead oft black and white a range of grey ... ;) It's better to use a loss-less format for displacements (and opacity) maps.

  • Sky HndxSky Hndx Posts: 142
    edited December 1969

    SimonJM said:
    Sky_ said:
    SimonJM said:
    How did you save the map, as .png, .jpg, .tif?

    I saved it as a .jpg. I didn't know file type could have an affect on the outcome. Just something else I may have to look up.


    jpeg is 'lossy' and you can end up with, instead oft black and white a range of grey ... ;) It's better to use a loss-less format for displacements (and opacity) maps.

    Okay, now that I think of it I think I did come across that a while back when I asked a question about TGA files but forgot. :)

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