Extracting data from an image of a graph, is there software?
Hello All, I go to a ton of conferences and get presentations with graphs that I would like to extract the data so I can analysis it with other tools. Generally, this is a slow process and I was thinking of writing a script that would put the image on a canvas, then I could use the mouse to click on the image axis (low and high ranges) for the X and Y limits (type in the scale) and then use the mouse to trace the curves on the graph. When done, just save the scaled "click data" as a CSV file. My question: Am I reinventing the wheel, is there software already out there that does this?
If not, I'm a perl coder, I know I can use TKL to do something like this, but is there a better way?
Good info to follow up on
I googled with far less return, likely the way I phrased it... I just don't think like other people I guess.
These were great links. I'm trying the last link now, crossing my fingers that it will do the basic stuff I'm looking for.