User Manual

Image Broadway 6 Help
Image Adjustments > Color and Tonal Adjustments > Adjust Colors > Threshold
Threshold
The Threshold tool is useful because it reveals color value distribution in an image and lets you select the desired
range.
The original image is below.1.
Open the Threshold dialog by choosing the Adjust/Enhance > Threshold menu item.2.
The Threshold tool consists of a dialog that displays the histogram of the image's pixel values. Clicking on one
of the two small triangular threshold handles and dragging the mouse through a range of histogram values, or
use the up and down arrows in the From and To boxes, will map all the pixel values in the image to either black
or white. The image pixels with values corresponding to the selected histogram range become white, and the
rest become black.
3.
If you select ranges on the left shown in Figure above, you will find out the pixels contribute to the ranges are
on the bottom line. By zooming in the image we find out there is a black line at the bottom of the image. You
can also use this dialog to locate the highlights and shadows. The Figure below shows you the highlights on the
image.
4.