Replacing B&W with a gradient of colors

Forum|Forum|5 years ago
January 22, 2021
2 replies
3537 views

Hi,

I'm currently facing some technical issue. I have a black & white image, with a transparent background. In addition, I have a (linear) gradient, from one color (yellow) to another (purple). I'm trying to create a replica of the B&W image, such as each gray pixel turn into a pixel colored in the same proportion of yellow/purple as it was colored in white/black.

There is another way of describing this probleme : let's assume you have a bicolor picture, and you know the two main colors (each pixel being colored with a combination of those two). Simply apply a B&W filter to your image. Then, given the two initial colors, how can you reconstitute the first picture ?

If you have any idea to do this, feel free to volunteer your answer !

Thanks a lot 🙂

How to

Conrad_C

Community Expert

There are two kinds of gradient adjustment layers, so for this purpose make sure you select Gradient Map, not Gradient Fill.

S

stephaniea47539078

Participant

Hello, I was wondering if someone can advise on a method (if there is one) to do this with two gradients to be applied depending on grayscale value being above or below a certain amount (i.e if the rgb value is 127,127,127 or below, apply gradient A and if it's over 127 apply gradient B)?