# Choosing Segmentation Parameters

The OCRMax tool performs optical character recognition (OCR), a process for analyzing an image and identifying a string of characters within a region of interest. The characters in the string can vary between images, the string can appear in different positions and at different rotations, and the strings can be variable in length.

An OCRMax tool requires a trained font containing an image of each character as it is likely to appear in run-time images. Any OCRMax tool you add to an application must either load a font file from memory or create one from scratch.

See the following sections for more information: