# Image Averaging

Use an Image Average tool to accumulate a discrete number of images of the same scene and generate an output image where each pixel value represents the average pixel value from that location in all the input images. An image average can be helpful for reducing image noise or for generating a reliable image where lighting can be erratic.

The tool can also calculate a standard deviation image, where lighter pixels indicate a higher degree of variation between images. The standard deviation image can be helpful in diagnosing lighting problems as you configure your vision application.