Image-Properties
Pixel is considered the basic element of an image. Image is consist of hundreds of thousands of pixels. It is important to know the image properties before and during the image processing, that is, the brightness value of each pixel, or, a more useful way, the histogram of an image provided the frequency of the brightness values (vertical axis) vs gray levels (horizontal axis).
To get the histogram of an image, you can select Analysis: Histogram.
You can also select Plot: Image: Profiles to know the Image Profiles.
Runing imgInfo will print out the given image file's basic information in script window. The output information is listed in the following table: