Creating Virtual Concept Models in SketchUp - Google SketchUp Workshop: Modeling, Visualizing, and Illustrating - page 12

Stage 3: Fine-Tuning the Render
Objectives : Bringing together several elements to obtain the final image.
Data : Rendered images from Vray and SketchUp.
Tools : SketchUp and Photoshop.
Once the image is generated, there are only a few adjustments that need to
be carried out in Photoshop to obtain a convincing result.
Often, you only need to adjust an image's levels (from the Menu Bar, choose
Image > Adjustment > Levels) to tweak the contrast, to bring out details, and
to make the image more clearly readable. The Levels palette shows a histo-
gram and three sliding cursors: Black, Gray, and White. By sliding these cur-
sors, you can adjust the luminosity values for different parts of the grayscale
spectrum far more accurately than you could with the Luminosity tool.
Tip
To obtain a quality “clay render,” it is often a good idea to create two
different renders with two types of illumination: One uses the sun and
creates high-quality projected shadows and the other uses only ceiling
lights to produce a more uniform level of detail. Compositing the two in
Photoshop produces a result that is precise and has great contrast.
FiG 1.7 Final image.
An Interior Perspective
Once the functioning and the logic of the building had been clearly explained,
it was necessary to present the interior ambience of the project in more detail.
To this end, we chose to create the perspective of the exhibition space, a
pivotal point between the extension and the existing structure.