SU Podium Revision Mockup

Line Overlay in Podium Image Editor


Superimposing a line overlay over a rendered scene is a very fast and effective method to create a stylized or artistic final image. When you are having difficulties achieving photorealism, it is often better to style your render as an abstract or artistic image than to present something that aims for realism but falls short.

There are two main ways to create a line overlay; one quicker and one more accurate. Let’s begin by exploring the latter:

SketchUp Export Technique:

First, render the SketchUp scene using the “Viewport” resolution setting in Podium. For this technique it is important that you render using the viewport resolution setting.

In order for lines to overlap correctly, you must keep the same view as your rendered image. Next, using the same model and camera view, create a SketchUp image without rendering it in Podium.

To do this: Switch to a white SketchUp background without sky, ground, or shadows. A fast way to accomplish this is to go to SketchUp Styles and in the Select tab choose Default SketchUp styles. Then choose the “Hidden Line” style. Use the Edit tab to turn off Sky and Ground. Make sure you disable shadows.

You can also use the Styles tool bar and select the “Hidden” icon.

Export the line image:

To export this scene to a 2D graphic format use the following path:

File → Export Image → 2D Graphic

Choose an image format such as .jpg or .png and make sure that anti-aliasing is checked in the Options dialog box so that your lines are crisp and well defined.

Load the original render in PIE:

After exporting the SketchUp image, load the original render in the Podium Image editor.

In the overlay section, under the general tab select “Load Overlay” and pick the exported SketchUp line-image that you created. Then, using the overlay slider, adjust the opacity of the imported image. If you are using an external image editor such as Photoshop, you may have other blending modes available like “multiply” which will add the lines over your base image while negating the white background. You can also experiment with different SketchUp styles to achieve a wide range of artistic styles with your renders.

Once you have finished blending the two images crop the image to the size you want.

Final Comparison:

The original render straight from SU Podium.

Final image, showing level adjustments, multiply blend and an added diffuse glow. Finished in Photoshop.

If you have any questions, please don't hesitate to post them on the forums!