Using Decompose

1. Overview

The following describes how Decompose can be used to extract objects from images. We will cover the following topics:

• Choosing a good image:
  Some images are better suited than others for decomposition. In this section we explain what makes an image suited or not.
• Drawing a mask:
  Decompose uses the mask as the initial approximation of the objet. The better the mask, the better the result will be.
• Saving the result:
  Once the object has been extracted, it can be saved as a TIFF with transparency and then loaded in your favorite image compositing software. Here we show how Adobe Photoshop can use the saved image.
• Tips for better results: Finally, we give some tips to improve and get better results.

1.1 Requirements

Before we start, make sure you have the following:

• Mac OS X 10.2 or higher
• If you will be doing compositing (adding the object to another image), you will need another software such as Adobe Photoshop.

Enough talk! Let's get started!