Not the correct color on volshow
8 views (last 30 days)
Show older comments
Matteo Bonhomme
on 19 Apr 2023
Commented: Matteo Bonhomme
on 9 Oct 2023
Hello,
I have this code
V_test=zeros(100,100,100);
V_test(10:20,10:20,10:20)=deal(1);
V_test(80:90,10:20,10:20)=deal(2);
V_test(45:55,45:55,45:55)=deal(3);
value=0:3;
color=[0,0,0;1,0,0;0,1,0;0,0,1];
queryPoints=linspace(min(value),max(value),256);
colormap = interp1(value,color,queryPoints);
figure(1)
myvol=volshow(V_test,Colormap=colormap);
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1360933/image.png)
I want the grey cube to be blue. It is blue on certain angle wich lead me to think it's a reflection issue but I'm not sure at all.
If anyone who's more familiar with volume rendering can help me that would be gratly appreciated :)
0 Comments
Accepted Answer
Sufiyan
on 27 Apr 2023
Hi,
You can refer to the below code.
V_test=zeros(30,30,30);
% first cube
V_test(10:20,10:20,10:20)=1;
% second cube
V_test(80:90,10:20,10:20)=2;
% third cube
V_test(45:55,45:55,45:55)=3;
value=0:3;
color=[0,0,0;0.2,0.8,0;0,0,1;1,0,0];
queryPoints=linspace(min(value),max(value),256);
colormap = interp1(value,color,queryPoints);
figure(1)
myvol=volshow(V_test,'Colormap',colormap);
% Change the rendering method to MIP
myvol.RenderingStyle = 'VolumeRendering';
% Adjust the view angle of the MIP projection
view([30,30]);
hope this helps!
More Answers (0)
See Also
Categories
Find more on Red in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!