How to show an image axes in pixeles?

I want to display the axes of an image in pixels, I mean the center (0,0) must be placed in the top left corner of the image and it must be limited for 640x480 pixels. See the image below for further explanation. How can I do this? Any help is appreciated.

Answer 1

[Jan]

FigH  = figure('Position', [100, 100, 720, 560]);
AxesH = axes('Units', 'pixels', 'Position', [40, 40, 640, 480], ...,
             'YDir', 'reverse', 'Parent', FigH);
image(0:639, 0:479, rand(640, 480, 3), 'Parent', AxesH);

[Erika]

Thanks Jan, this is very helpful.

Answer 2

[Image Analyst]

Display the image, then call axis on

imshow(yourImage);
axis on;

Answer 3

[John BG]

axis ij

does precisely invert the Y axis placing 0 up left.

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thanks in advance

John BG

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