Normalize Image


The Normalize Image command adjusts the image luminance to match a target specification, such as a specific value or a statistical luminance inside a region. A common application of this command is to match the brightness (luminance) of an image set. This dialog uses a Profile Control to save parameters used for different normalization procedures.

Overview

Image normalization consists of two distinct operations:

The target value may be specified or computed. To specify it directly, click the Value bullet and enter the target value into the adjacent field (you can also select a value from the field's history list). To computer the normalization value, an image is needed.

Profile

The name of the profile that manages the current set of parameters.

Image

The target image or image set that is to be normalized.

Normalization Target

 

Image

Selects normalization to a statistic computed from a reference image. The image is selected by the browse field to the right.

Value

Selects normalization to a value. The value is entered in the field to the right.

Method

Selects the method used to adjust the pixels during the normalization process. Offset adds a constant to the image values and Scale multiplies the image values.

Click this button to open the Region Statistics dialog to set parameters for computing a region statistic on the images.

Adjust Exposure Time

Check this box to adjust the exposure time to correspond to the image luminance after normalizing Scale method.

Data Type

Select the numeric pixel type in the normalized images.

Related Topics

Math Commands, Combine Images, Region Statistics