# 16-bit Image Support

In addition to Image8Grey images, a PMAlign tool can accept images of type CogImage16Grey with certain restrictions. For example, the following table displays the PMAlign tool algorithms and their support for various image types:

Algorithm | Image8Grey | Image16Grey
--- | --- | ---
PatQuick | Yes | Yes
PatMax | Yes | Yes
PatMax High Sensitivity | Yes | No
PatFlex | Yes | No
Pat Perspective | Yes | No

Note: Cognex does not support 16-bit image analysis with the PMAlign tool on processors that do not support the SSE4.1 instruction set.

Be aware of the following limitations of the PMAlign tool regarding 16-bit image types:

- The Autotune feature does not support 16-bit images.
- The tool does not support training a 16-bit pattern and then using it on an 8-bit image.