What does the value of I mean?

for i = 1:nrows
    for j = 1:ncols
        if( maskImage(i,j) )
            for im = 1:numImages
                I(im) = double(images(i,j, whichChannel, im));
            end
            [NP,R,fail] = PixelNormal(I, lightMatrix);
            surfNormals(i,j,1) = NP(1);
            surfNormals(i,j,2) = NP(2);
            surfNormals(i,j,3) = NP(3);
            albedo(i,j)        = R;
        end
    end
end

What does the value of I mean?

Answer 1

[Jan]

I is the value of images(i,j, whichChannel, im) as a double. So you have to find out, what images contains. How was this variable defined - or is it a function?

[덕우 이]

First of all, thank you.

function [surfNormals, albedo] = NormalMap( images, lightMatrix, maskImage, whichChannel)

It's defined like this.

This is my first time using Matlab.

[Jan]

function [surfNormals, albedo] = NormalMap( images, ...
                    lightMatrix, maskImage, whichChannel)

This is the definition of the function NormalMap. This does not clarify, what the contents of "images" is.

If it a variable, which is obtained as input?