# Image Search Parameters

An OCVMax tool uses the following image search parameters to locate the character strings you want to verify:

Parameter | Description
--- | ---
Search Mode | The OCVMax tool allows you to choose one of three different possible search modes for locating each character string. See the section Search Modes for more information on the various search modes.
Accept Threshold | The tool allows you to set an accept threshold to gauge the similarity between the character string and various features in the image that could resemble the string. See the section Matching Scores and Accept Thresholds for more information.
Degrees of Freedom | The tool allows you to set various values for the degrees of freedom the character string can undergo between successive images. See the section Degrees of Freedom for more information on degrees of freedom.