Image Processing Toolbox

Working with Image Data

MATLAB provides commands for reading, writing, and displaying several types of graphics file formats images. As with MATLAB-generated images, once a graphics file format image is displayed, it becomes a Handle Graphics® Image object. MATLAB supports the following graphics file formats:

• BMP (Microsoft Windows Bitmap)
• HDF (Hierarchical Data Format)
• JPEG (Joint Photographic Experts Group)
• PCX (Paintbrush)
• PNG (Portable Network Graphics)
• TIFF (Tagged Image File Format)
• XWD (X Window Dump)

For the latest information concerning the bit depths and/or image types supported for these formats, see the reference pages for imread and imwrite.

This section discusses how to read, write, and work with graphics images. It also describes how to convert the storage class or graphics format of an image.

Summary of Image Types and Numeric Classes

Reading a Graphics Image