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Re: extract data from graph ?


From: Przemek Klosowski
Subject: Re: extract data from graph ?
Date: Wed, 28 Mar 2018 09:51:12 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0

On 03/28/2018 09:07 AM, CdeMills wrote:
Hello,

I need to correct a paper containing graphs saved as bitmap images. Those
images were generated by a scope, and I can't redo the experiment. Is there
some way to "undo" the graph and get back the curves ?
I can take the image, apply a differentiator, check for regions of high
contrast, and map that region back to values. But if some automatic tool
could do it quickly and without error, it would be better.
There's Engauge http://markummitchell.github.io/engauge-digitizer/
as well as some excellent web based ones (Tatsuro's email)




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