Why the image is upside down when I display it in a graph?

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

Answer 1

[Mischa Kim]

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');

Answer 2

[afrya]

thanks for your answer.The image is now in the right order But I still have a problem, when I add set(gca,'YDir','reverse') in my code, the graph is also reversed.

Answer 3

[Image Analyst]

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).

[afrya]

Thanks for your answer.When I call flipud(imageArray), I get this message error

Error in projecttest7 (line 148)

image([150 350],[4 4.7],flipud(img));

Could you tell me how can I set ydir to 'reverse? I don't see how to do it

[Image Analyst]

Is img color or grayscale? What does this say

[rows, columns, numberOfColorChannels] = size(img) % No semicolon