How to obtain color value in near infrared image

if I take the picture of three objects( say light yellow, mid yellow, deep yellow) with near infrared camera, is it possible to identify and obtain the real value and intensity of these colors in near infrared?

Answer 1

[Image Analyst]

Depends on what you mean by the "real value and intensity", but yes, you can get the digital values of the image.

[Jack Sparrow]

How?, because the image is basically going to be in gray form

[Image Analyst]

That's correct. The gray level is the intensity.

IR_intensity = grayImage(row, column);

[Jack Sparrow]

Thank you

[Jack Sparrow]

I'm working on a project, i need to identify the ethnicities from the images but they are all taken in near infrared. so i'm confused on how to go about this.