imaqBCGLookup

[tottorico]

Hi,

What kind of formula does imaqBCGLookup perform brightness conversion?

I assume it's y = 255*((tan(contrast)(x-128) + brightness)/255)^gamma.

Is it right?

[Deus_ex_Machina]

How did you come up with this formula?

Did you see it somewhere? I could not find it.

[Andrey_Dmitriev]

---

@tottorico wrote:

Hi,

What kind of formula does imaqBCGLookup perform brightness conversion?

I assume it's y = 255*((tan(contrast)(x-128) + brightness)/255)^gamma.

Is it right?

---

Almost right.

Quick and dirty test: