Creating an Illumination Map with Image Authoring
Image Authoring generates a default Illumination Map when you create your vignette.
On the Illumination page, you can select individual objects or groups and change their brightness and contrast.
You can also adjust the Illumination Map for the unmasked area before you mask objects to affect the entire vignette. Once you mask the objects within the vignette, adjusting the Illumination Map for the unmasked area changes only the unmasked area's Illumination Map and does not affect any masked objects.
Adjustments to individual object illumination are saved as adjustments to the entire Illumination Map. These changes override the overall Illumination Map settings unless you import a new Illumination Map or select everything and make further changes.
If certain materials require different illumination than others, you can use [Render] settings to change illumination options for rendering only, without affecting the Illumination Map.
To Adjust the Illumination Map:
- Click the Illumination Page button .
- In the Illumination page options, choose Map A, B, or C, and set the Image to Illumination.If you are working with a single Illumination Map, the default Illumination Map option is Map A. If you have multiple Illumination Maps, you can select them to see them.The Illumination image option shows you the grayscale Illumination Map. Choose this when you want to use the Illumination tools to change the map.
- In the [Select Object] box in the toolbar, select an object or group to adjust.If you adjust a group, you adjust all the objects in that group.
- Use the tools on the Illumination page to change the Illumination Map for the selected object or group:
- The is similar to the Levels tool in Photoshop.
- The lets you adjust both the brightness and the contrast for the selected object or group using a slider.
- The lets you adjust the brightness of the entire object or group relative to a single pixel in that object or group. The results are more dramatic than the Histogram's, but they are harder to control.
- The lets you blend pixels in the selected object or group, much like the Smudge tool in Photoshop.
- The lets you paint brightness or darkness onto an area.
- The lets you copy pixels from one area of the object or group to another, much like the Rubber Stamp tool in Photoshop.
- The lets you add noise to reduce banding due to high contrast.
- The lets you clean up the edges that produce halo effects due to a mismatch between the Illumination Map and the mask.
- Save the image to update the Illumination Map.
- Preview the results.If you don't like the results of your edits, you can reset the [Illumination Map] to its original values or to its last saved values.