Difference between Contrast and Intensity of an Image

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.

1. What is intensity and contrast?
2. What is intensity of an image?
3. What is the contrast of an image?
4. What is the difference between brightness and contrast of an image?

What is intensity and contrast?

The intensity contrast is defined as the difference in mean intensities of the background and object, which characterizes the intensity difference between the object and background.

What is intensity of an image?

The intensity profile of an image is the set of intensity values taken from regularly spaced points along a line segment or multi-line path in an image.

What is the contrast of an image?

Contrast is the range of brightness, from lightest to darkest, in an image. A high-contrast image will have very bright highlights and very dark shadows. Sometimes an image's highlights may be almost pure white, or the shadows may be almost pure black: high contrast.

What is the difference between brightness and contrast of an image?

Brightness increases the overall lightness of the image—for example, making dark colors lighter and light colors whiter—while contrast adjusts the difference between the darkest and lightest colors. Below is an example of adjustments made to the brightness and contrast of an image.