Thread Subject: creating an image

Hi,

I have a struct with struct.x, struct.y and struct.value and want to create an image, where (struct.x,struct.y) represent the pixel and the value is interpreted as color or intensity in grey scale.

Is it better to have an 3D Array or doesn't it matter. The size of the picture is usually 512x512.

cheers,
Dominic

If the values are intensities, you need a 2D matrix

im2D

which will satisfy:

im2D(x,y) = value;

But if you are going to use color, then you could have a 3D matrix satisfying:

im3D(x,y,1) = redValue;
im3D(x,y,2) = greenValue;
im3D(x,y,3) = blueValue;

where value = [redValue,greenValue,blueValue];


"Dominic " <dom_awf@hotmail.com> wrote in message <gv6oo2$6t$1@fred.mathworks.com>...
> Hi,
>
> I have a struct with struct.x, struct.y and struct.value and want to create an image, where (struct.x,struct.y) represent the pixel and the value is interpreted as color or intensity in grey scale.
>
> Is it better to have an 3D Array or doesn't it matter. The size of the picture is usually 512x512.
>
> cheers,
> Dominic