Remove image outside of Contour Plot
1 visualización (últimos 30 días)
Mostrar comentarios más antiguos
Harry Andrews
el 9 de Jul. de 2018
Comentada: Harry Andrews
el 9 de Jul. de 2018
The following code gives the attached image.
figure, imshow(NT,'DisplayRange',[]);
hold on
MNSContourThreshold = 0.5*double(MaxNonSpecific)
contour(NT,[MNSContourThreshold MNSContourThreshold], 'color', 'g')
I now want to set every pixel (within the brain image) on the outside of the contour line to 1 (Black).
0 comentarios
Respuesta aceptada
Image Analyst
el 9 de Jul. de 2018
What exactly does that mean? You mean you want a 1-D list of all pixel values outside one of the contour lines? The contour line at which level? Then do this:
mask = NT < someValue; % or >
pixelValues = NT(mask); % A 1-D list of all pixels below someValue.
Or do you want to mask the image, like you want a 2-D image but want the inside of the contour blackened or set to some other value like 1 or 255 or inf or nan? Like
NT(mask) = someValue; % For example NT(mask) = 0;
3 comentarios
Image Analyst
el 9 de Jul. de 2018
Did you try what I said?
mask = NT < MNSContourThreshold;
NT(mask) = 1; % Set to almost black.
If not, why not?
Más respuestas (0)
Ver también
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!