Why the image is upside down when I display it in a graph?
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afrya
el 7 de En. de 2014
Comentada: Image Analyst
el 13 de En. de 2014
Hello,
I have a problem when I display an image in a plot.The image is upside down in the figure window.
Do you know how to fix this problem?
here is my code to display the image in the graph:
% Load the image
img = imread('KAM-Map_12s.bmp');
hold on;
% Plot the image, with x and y coordinnates
image([150 350],[4 4.7],img);
Thanks in advance
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Respuesta aceptada
Mischa Kim
el 13 de En. de 2014
Editada: Mischa Kim
el 13 de En. de 2014
Simply add (only)
set(gca,'YDir','reverse');
In other words, try
img = imread('KAM-Map_12s.bmp');
hold on;
image([150 350],[4 4.7],img);
set(gca,'YDir','reverse');
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Más respuestas (2)
Image Analyst
el 7 de En. de 2014
The direction of the y axis is reversed from regular graphs since the convention is that the top of the image is line 1 and line numbers increase as you go down. You can set ydir to 'reverse' or call flipud(imageArray).
2 comentarios
Image Analyst
el 13 de En. de 2014
Is img color or grayscale? What does this say
[rows, columns, numberOfColorChannels] = size(img) % No semicolon
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