Image Processing Toolbox User's Guide

Objects, Regions, and Feature Measurement

The toolbox includes several functions that return information about the features in a binary image, including

• Connected-component labeling, and using the label matrix to get statistics about an image
• Selecting objects in a binary image
• Finding the area of the foreground of a binary image
• Finding the Euler number of a binary image

Pixels that are on, i.e., set to the value 1, in a binary image are considered to be the foreground. When you view a binary image, the foreground pixels appear white. Pixels that are off, i.e., set to the value 0, are considered to be the background. When you view a binary image, the background pixels appear black.

Distance Transform

Connected-Component Labeling

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