reading data from a image graph (jpeg,bmp)

hi

I am looking for a function or code in matlab that i can import a image (jpeg,bmp...) that show a graph and extract the graph data from the image.

there is a code or a function that do it?

thanks for the help

[pfb]

that would be awesome!

[Roberto Herrera-Lara]

i really dont understand... which data... read a jpg is really easy... which data do you mean?

[John D'Errico]

And THAT would be sarcastic. lol

[pfb]

No really, if that exists I want it.

I think it is a bit of a tall order, though :)

[david]

ILL TRY TO EXPLAIN :

if i have a image file such as

I'm asking if there is a function or a code that can read the data from the graph-such as (x=1,y=1...) maybe do some image processes or something

thanks

[pfb]

Such a function would be really useful, at least to me.

I think that extracting the data would be a really impressive feat, though.

The function should recognize the axes, the axis labels, and the data points. In your example that might be sort of easy, e.g. because of the different colors. But I think it would get really messy for more complex (or plainer) figures I find in scientific articles.

Not impossible. But if someone accomplished that and he/she is willing to share it, I think I'm going to kiss my own elbows.

Anyway, asking does not cost a thing.

Maybe for some image processing wizard this is a piece of cake.

Answer 1

[Star Strider]

I’ve seen DigiGraph referenced, I believe by Image Analyst, a few times. There may be others.

[pfb]

This is really interesting. I definitely want to try it. Thanks!

[Star Strider]

My pleasure!