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From: Shamane on 22 Jan 2010 04:24
Hi all! :)

In an image X, I have a grayscale pixel which has only 1 value: 200. I also know it's coordinate: (124,32)
I have a rgb value: [0, 220, 255] with a variable name called Seed.
I want to replace the grayscale pixel with this rgb value. And I tried using this:

X(32,124)= Seed;

I have this error:
Assignment has more non-singleton rhs dimensions than non-singleton
subscripts.

I understand it's because I'm trying to write a matrix of 3 values into a space of 1. But how do I solve this error then?

Will be so grateful if you guys can help me. :) Thank you!
From: ImageAnalyst on 22 Jan 2010 06:20
Make up your mapping of gray levels to color in an N by 3 matrix (the
"colormap") and then call ind2rgb().
From: Shamane on 25 Jan 2010 02:12
ImageAnalyst <imageanalyst(a)mailinator.com> wrote in message <2cb16122-81ff-4ff8-a94f-65323b463277(a)b9g2000yqd.googlegroups.com>...
> Make up your mapping of gray levels to color in an N by 3 matrix (the
> "colormap") and then call ind2rgb().

I apologise, I don't really get what you mean. Do you mean to say, convert my grayscale image to one with a colormap? However, I only want to change a particular grayscale pixel to a rgb pixel. The rest of the grayscale pixels still remain as it is.
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