Image intensity function

1. What is the image intensity function?
2. What is intensity in imaging?
3. What is image intensity resolution?
4. What is image intensity histogram?

What is the image intensity function?

The term image refers to a 2D light-intensity function denoted by f(x,y), where the value or amplitude of f at spatial coordinates (x,y) gives the intensity (brightness) of the image at that point.

What is intensity in imaging?

Intensity refers to the amount of light. For grayscale images, it's depicted by the grey level value at each pixel (e.g., 127 is darker than 220 and brighter than 055 for 8-bits coded images). Contrast refers to differences between bright and dark parts.

What is image intensity resolution?

b) Intensity level resolution:

It refers to the number of intensity levels used to represent the image. The more intensity levels used, the finer the level of detail discernible in an image. Intensity level resolution is usually given in terms of the number of bits used to store each intensity level.

What is image intensity histogram?

An image histogram is a graphical representation of the number of pixels in an image as a function of their intensity. Histograms are made up of bins, each bin representing a certain intensity value range.