Turning an image into grayscale and Deuteranomaly scale in Matlab

[poster]

<p>I want to turn an image from its original RGB scale to grayscale and deuteranomaly. However, every attempt I try gives me somewhat darker image that does not truly display grayscale.<a href="https://i.stack.imgur.com/7nvZs.png" rel="nofollow noreferrer">My attempt for grayscale</a>
here is what im running</p>

<pre><code>whe = imread('CoWheel.png');

whesi = size(whe);


red = [];
gree = [];
blue = [];

for i = 1:whesi(1)
for j = 1:whesi(2)
red(i,j) = whe(i,j,1);
gree(i,j) = whe(i,j,2);
blue(i,j) = whe(i,j,3);
end
end

gray = whe;
for i = 1:whesi(1)
for j = 1:whesi(2)

gray(i,j,1) = gray(i,j,1)*.2989;
gray(i,j,2) = gray(i,j,2)*.5870;
gray(i,j,3) = gray(i,j,3)*.1141;

end
</code></pre>

<p>And as for the deuteranomaly, I would have no clue into what to do to make that. Any help would be appreciated.</p>



More... (https://stackoverflow.com/questions/59009703/turning-an-image-into-grayscale-and-deuteranomaly-scale-in-matlab)