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  • Texture, Emboss
  • Texture, Oil
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  • Texture, Twist
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      Effect:Texture Edge Detect
      Category:Color Sources

      Description: The Texture Edge Detect Effect lets you use any of the 5 Texture or Noise slots in the Texture Pane and use that Texture, with an edge detection filter, in your painting. Since you can use multiple Effects at the same time, you can use multiple Texture Effects with different Textures (up to 5). Textures are either Noise or a Photo from your Photo Album.

      The Texture Edge Detect Effect is identical to the Texture Effect with the addition of a blur added to the Texture as you paint.

      Note that Texture Edge Detect outputs a two-color image. It uses the incoming Color 1 for the Non-Edge color and the incoming Color 2 for the Edge Color.

      If you enable the Fit To Brush Option you will paint with the Texture Edge sized to your brush.

      Options: The Texture Edge Detect Effect has the following Options Pane:

      Texture Slot:Use this to select the Texture Slot you want to user from the Texture Pane. The dark green circle is the currently selected Texture, the lighter yellowish circles are not selected. Remember that any Texture slot can contain either a Photo from your Photo Album, or Noise. The Texture slot you pick does not have to have a Texture in it yet - however, if you try to paint you will get a warning that you need to load a missing Texture.
      Edge Threshold:This controls the sensitivity of the edge detection. Larger values detect fewer edges, smaller values detect more edges.
      Fit To Brush:If set to a Red X the Effect spans the screen such that as you paint you reveal the Effect. When set to a Green Check Mark the Effect is sized to the brush such that as you paint the entire Effect is within the brush itself.
      Output Color 1:By default this is set to REPLACE which means that the set color will be output to Color 1. You can change this as explained in Options Pane Color Mixers.
      Output Color 2:By default this is set to IGNORE which means that the Color 2 will be ignored (the original Color 2 will be kept). You can change this as explained in Options Pane Color Mixers.

      Example: To show the Texture Edge Detect Effect we again have loaded our Arches National Park photo into our Texture Pane slot 1:

      In this next image we have used the default Texture Edge Detect values:

      Here we have used a higher (less edges) Threshold of 10:

      Below are two photos. In this case we set our Brush Effect Slot #1 to the Texture Effect, and Slot #2 to the Texture Edge Detect. Both are pointing to the same photo as the Texture. In the left image, Output Color 1 is set to Add. In the right image, Output Color 1 is set to Multiply. You can see how adding, or multiplying, the original with the edge detection produces different results.

      Keep in mind that our results were done using Color 1 set to white and Color 2 set to black. You can send any colors in to get totally different effects. Since our edge color was black (Color 2), the effects we achieved were due to black multiplied times anything is black.


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