Best OCR for extracting text from a plot?

Answer 1

You can try at first to find the text "Gold Price" or "GBP" (if this text is always the same) And then you will know the place where that text is places, then just cut that part of image containing the text and proceed OCR to that line separately. You can also try Cuneiform: link text

Answer 2

Sounds like you need Engauge Digitizer (Open Source) - Digitizing software that converts an image file showing a graph or map, into numbers.