Extract data from chart picture

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Mani Ahmadian
Mani Ahmadian el 25 de Jul. de 2016
Comentada: Image Analyst el 25 de Jul. de 2016
hi
I have some charts as pictures. I have to extract data automatically in (x, y) format. Because my charts are so long I cant digitize them manually. Please help me to solve problem.
Thanks a lot
Mani

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Walter Roberson
Walter Roberson el 25 de Jul. de 2016
I am certain that there is no "practical" code that can handle all of the various cases automatically. Possibly there might be practical code for one particular kind of graph, especially if it is all generated by the same software.
You are asking for a Deep Learning AI that can do natural language processing in Urdu, Arabic, Hutt, Horta, Linear A, and Drosophila melanogaster. Such a thing does not exist.
However, if you were to instead restrict yourself to one particular style of chart, in one particular alphabet and font, then your task might possibly be practical.
We are not even going to attempt a serious answer until you show us examples of all of the chart variations that will need to be examined.
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Mani Ahmadian
Mani Ahmadian el 25 de Jul. de 2016
Dear Walter
I attached one of my charts. Please guide me to extract data from each chart.
Thanks a lot
Mani
Image Analyst
Image Analyst el 25 de Jul. de 2016
You'd have to write a custom image analysis app for that. If the charts are all aligned in the same location, just use a template to mask out the text labels, axes lines, etc. Then scan what's left getting the row and column of the black curves and then turn those into some calibrated units based on the units that the axes have, like millimeters or whatever.

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