How can I color the pixels of my image depending of it's value in an equation?

Hi,

For my final degree project I need to color the pixels of an image depending on the final value when using an specific equation.

For instance, for each pixel I have extracted the PA, P1, P2 and P3 values.

Then I use an exponencial equation to calculate one value (probability) of each pixel just like: Prob=1/(1+exp(2.213.*PA+2.358.*P1-1.625.*P2-1.257.*P3+3.128));

Finnally, if the Prob value is higher than 0.351 I want that pixel to be in green while if it's lower in red (for example, the colors don't matter).

If someone know's how to do it would be a great help, thank you in advanced.

Answer 1

[KSSV]

Let I be your image pixle matrix with the values Prob repalced using the shown formula.

% To repalce values less than Prob
idx = I<Prob ;
I(idx) = val1 ;  % your value 
idx = I<Prob ;
I(idx) = val2 ;  % your value