Enter the contrast in the image and the contrast in the target into the Calculator. The calculator will evaluate the Modulation Transfer Function. 

Modulation Transfer Function Formula

MTF = CI / CT

Variables:

  • MTF is the Modulation Transfer Function ()
  • CI is the contrast in the image
  • CT is the contrast in the target

To calculate the Modulation Transfer Function, divide the contrast in the image by the contrast in the target.

How to Calculate Modulation Transfer Function?

The following steps outline how to calculate the Modulation Transfer Function.

  • First, determine the contrast in the image. 
  • Next, determine the contrast in the target. 
  • Next, gather the formula from above = MTF = CI / CT.
  • Finally, calculate the Modulation Transfer Function.
  • After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

contrast in the image = 1.78

contrast in the target = 2.94