How to find coordinates(x,y) from jpg file

How to find coordinates(x,y) from jpg file

Answer 1

[Walter Roberson]

http://uk.mathworks.com/matlabcentral/answers/233072-i-have-one-jpg-file-i-want-to-get-all-the-points-in-x-y-coordinate-format-in-excel-sheet-what-is

[mahipal komandla]

Thank u for your replay sir,I have X,Y Values are

X =(0    0.2000    0.8000    1.0000    1.0000    1.6000    3.4000    4.0000    4.0000    4.2000    4.8000    5.0000)

Y =(0    0.2000    0.8000    1.0000    1.0000    0.6000   -0.6000   -1.0000   -1.0000   -0.4000    1.4000    2.0000).

I ploted graph.but I saved jpg file. I want reverse way also ,means if i will give jpg , i want data(X,Y) values.

[Walter Roberson]

http://www.mathworks.com/matlabcentral/fileexchange/?term=tag%3A%22digitize%22&sort=ratings_desc

Note: it is not recommended that you use .jpg files for this purpose. .jpg files smear boundaries and make it difficult to find the correct edges. It is better to use .tif or .png files if you need to process the images.