Change Fractal Colors to nuances of red
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Silvia Bernardi
le 16 Août 2019
Commenté : Adam Danz
le 19 Août 2019
Hello,
I have a series of fractals in RGB, such as the one uploaded here, and I would like to change their colors to only nuances of red, black and white. So that the structure of the image would remain in white or black and the filling will be only red. Any suggestions would be welcome.
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Walter Roberson
le 16 Août 2019
Possibly rgb2ind() followed by using a different colormap() with ind2rgb()
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Subhadeep Koley
le 19 Août 2019
Tweaking the "hex" vector as shown below could help solve the issue.
a=imread('image0006v1.bmp');
%modify the sample points inside vec and put the hex code for as many different shades of red you want
vec = [ 100; 83; 68; 44; 30; 15; 0];
hex = ['#FF6347';'#DC143C';'#FF0000';'#B22222';'#B22222';'#8B0000';'#800000'];
raw = sscanf(hex','#%2x%2x%2x',[3,size(hex,1)]).' / 255;
%N =100;
N = size(get(gcf,'colormap'),1) % size of the current colormap
map = interp1(vec,raw,linspace(100,0,N),'spline');
rgbImage = ind2rgb(a, map);
imshow(rgbImage);
1 commentaire
Adam Danz
le 19 Août 2019
The RGB vectors may be easier to work with. For example, here's a colormap that fades from black to red.
colorMap = [linspace(0,1,256)', zeros(256,2)]
colormap(colorMap);
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