Mastering OpenCV 4 with Python

Saturation arithmetic

Saturation arithmetic is a type of arithmetic operation where the operations are limited to a fixed range by restricting the maximum and minimum values that the operation can take. For example, certain operations on images (for example, color space conversions, interpolation techniques, and so on) can produce values out of the available range. Saturation arithmetic is used in order to solve this.

For example, to store r, which can be the result of performing a certain operation to an 8-bit image (values ranged from 0 to 255), the following equation is applied:

This concept can be seen in the following saturation_arithmetic.py ...