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Eye/Iris Tutorial

Discussion in 'Gimp Tips & Tutorials' started by inigo_jones, Aug 13, 2008.

  1. inigo_jones

    inigo_jones New Member

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    Here is a tutorial on Making an Iris Texture from scratch in the gimp.

    It is Heavily based on the following Photoshop tutorial: http://www.adamdorman.com/tutorials/eyeball_tutorial.php

    Here we GO...
    ------------------------------------------------------

    Create a new image...
    --Dimensions: 1024px by 1024px

    Rename the base layer to "Pinched"

    Add Transparency...
    --Layer -> Transparency -> Add Alpha Channel

    Apply "Solid Noise" filter...
    --Filters -> Render -> Solid Noise
    ----Check: "Randomize"
    ----Detail: 15
    ----X & Y Size: 4.0

    [​IMG]

    Apply multiple "Difference Cloud" filters...
    --Filters -> Render -> Difference Clouds
    ----Check: "Randomize"
    ----Detail: 15
    ----X & Y Size: 4.0

    --Press "Control + f" to repeat filter
    ----Repeat 5-8 times

    [​IMG]

    Apply multiple "Pinch" filters...
    --Filters -> Distorts -> Whirl and Pinch
    ----Whirl angle: 0.00
    ----Pinch Amount: 0.650
    ----Radius: 1.3

    --Press "Control + f" to repeat filter

    [​IMG]

    Ellipse select on pinched layer...
    Click "Ellipse Select" tool
    -or-
    Press "e"

    Make a canvas sized circle...
    --Click at 0,0
    --hold "Shift"
    --Drag to 1024

    Shrink the selection...
    --Select -> Shrink
    --Shrink: 20px

    Invert Selection...
    --Select -> Invert

    Clear background...
    --Edit -> Clear

    [​IMG]

    Create a New Layer
    --Name: Polar Coords
    --Width/Heigth: 1024
    --Fill Type: Transparency

    Select Polar Coords Layer.

    Apply Stretched Solid Noise...
    --Filters -> Render -> Solid Noise
    ----Check: Randomize
    ----Detail: 15
    ----X size: 16.0
    ----Y size: 2.0

    [​IMG]

    Apply Polar Coordinates to Solid Noise...
    --Filters -> Distorts -> Polar Coordinates
    ----Circle depth %: 100.00
    ----Offset Angle: 0.00
    ----Check: To Polar

    [​IMG]

    Move "Polar Coords" layer above pinched layer.
    Set "Polar Coords" layer mode to overlay.

    [​IMG]

    Select the Pinched Layer

    Click the "Fuzzy Select Tool"
    -or-
    Press "u"

    Click in the empty space around the circle

    Grow the Selection
    --Select -> Grow
    ----Grow Amount: 60 pixels

    Feather the Selection
    --Select -> Feather
    ----Feather: 80 pixels

    Create a New Layer
    --Name: Edge Ring
    --Width/Heigth: 1024
    --Fill Type: Transparency

    Select Edge Ring Layer.

    Set Forground Color to Black.

    Bucket Fill Selection with Black.

    Select None
    --Select -> None
    -or-
    --Press "Shift + Control + a"

    Make "Edge Ring" the top layer.

    Adjust "Edge Ring" layer settings...
    --Layer Mode: Multiply
    --Opacity: 75.0

    [​IMG]

    Create a New Layer
    --Name: Color
    --Width/Heigth: 1024
    --Fill Type: Transparency

    Make "Color" the top layer.

    Pick a Foreground Color...
    --Value and Saturation dont matter.
    --"0079ff" is a nice blue.

    Bucket Fill the "Color" Layer with color.

    Adjust "Color" layer settings...
    --Mode: Color
    --Opacity: Adjust to Taste
    ---- ~40% works well for "0079ff - Blue"

    [​IMG]

    Select the "Pinched" Layer

    Click the "Fuzzy Select Tool"
    -or-
    Press "u"

    Click in the empty space around the circle

    Invert the Selection
    --Select -> Invert
    or
    --Press "Control + I"

    Shrink the Selection
    --This determines the size of the pupil.
    --Shrink: To Taste (~280 pixels works well)

    Feather Selection.
    --Select -> Feather
    --Feather: 30.00 pixels

    Create a New Layer.
    --Name: Pupil
    --Width/Heigth: 1024
    --Fill Type: Transparency

    Make "Pupil" the top layer.

    Switch to "Pupil" Layer.

    Set foreground color to black.

    Bucket Fill the selection

    [​IMG]

    Create a New Layer.
    --Name: Color 2
    --Width/Heigth: 1024
    --Fill Type: Transparency

    Move "Color 2" layer below "Pupil" layer

    Select the "Color 2" layer

    Grow Selection (the previous pupil selection)
    --Grow: 60px

    Pick a Foreground Color...
    --Value and Saturation dont matter.
    --"ffdd00" is a nice gold.

    Bucket Fill the selection.

    Select None
    --Select -> None
    -or-
    --Press "Shift + Control + a"

    Apply "Gaussian Blur" filter...
    --Filters -> Blur -> Gaussian Blur
    ----Horiz: 150.0 px
    ----Verti: 150.0 px
    ----Blur Method: RLE

    Adjust "Color 2" layer settings.
    --Mode: Color
    --Opacity To Taste
    ---- ~45% works well for "ffdd00 - gold"

    [​IMG]

    Tweak "Pinched" layer brightness
    --Depending on your colors and noise patterns
    --you may want to lighten the "Pinched" layer

    Select "Pinched" layer

    Adjust Brightness/Contrast...
    --Colors -> Brightness-Contrast
    ----Brightness : To Taste (+30.0)
    ----Contrast : To Taste (-30.0)

    [​IMG]

    ------------------------------------------

    This tutorial works great with this blender (http://en.wikibooks.org/wiki/Blender_3D:_Noob_to_Pro/Creatin g_Pixar-looking_eyes_in_Blender) tutorial to make some really slick 3D eyes.
     
  2. L7hope

    L7hope Member

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    Wow! That's awesome! :D

    I'm going to have to try this. ;D
     
  3. CitrusFruit

    CitrusFruit Member

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    Cool dude!
     
  4. lamaz1928

    lamaz1928 Active Member

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    wow very very cool!!!!!
     

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