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Shaded Sketch Presentation - SketchUp + Photoshop

·2 min read
Shaded Sketch Presentation - SketchUp + Photoshop
A nice and practical way to get a very realistic sketch from SketchUp:

In SketchUp:

  1. Choose a Sketchy Edges style you like;
  2. Turn off shadows and export the image (Fig. 1); [caption id="attachment_672" align="aligncenter" width="512"] Fig. 1: Sketchy Edges style[/caption]
  3. Turn on shadows and, in the Estilos window, erase the edges via the Editar menu, and export the image (Fig. 2); [caption id="attachment_674" align="aligncenter" width="512"] Fig. 2: Shadows[/caption]

In Photoshop:

  1. Open the image with the lines;
  2. Insert the image with the shadows into a new layer;
  3. Apply a Levels to the shadows to darken them enough to ensure good contrast with the white background (Fig. 3); [caption id="attachment_675" align="aligncenter" width="512"] Fig. 3: Adjusting the Levels on the shadows[/caption]
  4. Still on this layer, make a Color Range selection on the black to select the entire shadow area;
  5. Apply a Feather (Shift+F6) of 3 px to the selection (or more, depending on the image size; in this case the image is 4000 px wide);
  6. Hide the shadows layer and create a new one, without undoing the selection;
  7. Choose a Brush similar to SketchUp's style and scribble across the whole page (Fig. 4) — you'll only be drawing in the shadow areas. Press Ctrl+H to hide the selection outline and make it easier to see (a graphics tablet pen was used to increase the realism of the shadow strokes); [caption id="attachment_682" align="aligncenter" width="640"] Fig. 4: Final Drawing[/caption]
One way to achieve greater similarity between the stroke of the image exported by SketchUp and the stroke obtained in Photoshop is to use the Style Builder program, available in the Pro version of SketchUp. First look for a Brush in Photoshop, with a small thickness (less than 4 px), make a few strokes, and import them into Style Builder; then, create a style. Export the line images with this style and use the same Brush when scribbling the shadows.

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