Factor Phase

The Factor Phase enables you to process the image using Lightbrush to create the intrinsic illumination and reflectance maps. Lightbrush requires a small amount of input to generate an initial solution, after which you can refine the solution with additional cues. In many cases, the initial reflectance and illumination maps require no further modification.

You provide cues to the system by annotating the image with one or more tools to indicate different types of information. These cues provide knowledge about the scene that helps Lightbrush to better separate the image into the intrinsic illumination and reflectance images.

Main Factor Phase Layout

The Factor Phase initially displays the original image in the main window. The Tool Palette (B) lets you select the active viewing or annotation tool, and the Tool Options panel (A) lets you adjust its behavior.

The main window has five different views, or tabs: Original, Illumination, Reflectance, Product, and Combined. The Original tab (B) displays the original image; the Illumination tab displays the current illumination map; the Reflectance tab displays the reflectance map; the Product tab displays the product of the illumination and reflectance maps; and the Combined tab displays all four in a 2x2 grid, as shown in image (C).

Until you have processed an image for the first time, only the Original tab will display content. The main window will automatically switch to the Combined view the first time you process a newly opened image or file. The view will stay in its current tab after subsequent processing.

Unless hidden, all annotations are visible in all of the tabs, and you can add new annotations in whichever tab is most appropriate.