Adding X-Y axis into image file

Hi,

can anyone help me to add horizontal and vertical axis on the below image (dimension is 380*584 pix = 50* 77 mm)

Answer 1

[Image Analyst]

After you call imshow() call axis():

grayImage = imread('image.jpeg');
imshow(grayImage, [], 'XData', [0, 50], 'YData', [0, 77]);
axis('on', 'image');

[MSK]

Hi, thank you for the support. Please could you tell me how to change my verticla axis from 0 to 77 instead of 77-0.

[Image Analyst]

I think it's

axis('xy'); % Origin at bottom left.

To get the origin at the upper left:

axis ij % Put origin at the upper left:

[Image Analyst]

You can use flipud() on the variable as you pass it into imshow():

grayImage = imread('image.jpeg');
imshow(flipud(grayImage), [], 'XData', [0, 50], 'YData', [0, 77]);
axis('on', 'image', 'xy');

Or reverse the numbers for YData:

grayImage = imread('image.jpeg');
imshow(grayImage, [], 'XData', [0, 50], 'YData', [77, 0]);
axis('on', 'image', 'xy');

[MSK]

Thanks a lot.