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automeris-io / WebPlotDigitizer

Computer vision assisted tool to extract numerical data from plot images.
https://automeris.io
GNU Affero General Public License v3.0
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Automatic digitization of a closed line, polygon, or filled object #199

Open foret37 opened 4 years ago

foret37 commented 4 years ago

Your automatic digitization feature is very nice. Would it be possible to include the ability to automatically digitize an object. At present, the program will find points for an object (as defined by a fill or a closed line) but the points are not organized as a path around the object. Thanks for your consideration. Best, Mark

nbehrnd commented 4 years ago

Mark's idea ignites an other one: maybe not «only» use WPD to estimate diameter and perimeter of objects on a map, but to calculate / approximate its surface as long as one referenced an external bar. One example in topographic maps is Google Maps Area Calculator (one example. But it equally could be more than this, e.g. to determine the typical grain sizes in a microscopic sample like in polarization microscopy, too. As a speculation: similar like WPD already guesses where a blue line transitions into the background, maybe WPD equally may determine (an initial) grain / cell boundery, too.

Equally with best regard, Norwid

ankitrohatgi commented 4 years ago

Yes, this is something I want to get to eventually. At the moment, you can manually add a polygon to calculate area, perimeter etc. (under "measurements") but no automatic methods yet. 🔜

foret37 commented 4 years ago

Thanks for the reply. Best, Mark

From: Ankit Rohatgi notifications@github.com Reply-To: ankitrohatgi/WebPlotDigitizer reply@reply.github.com Date: Sunday, June 28, 2020 at 11:24 PM To: ankitrohatgi/WebPlotDigitizer WebPlotDigitizer@noreply.github.com Cc: Mark Brandon mark.brandon@yale.edu, Author author@noreply.github.com Subject: Re: [ankitrohatgi/WebPlotDigitizer] Automatic digitization of a closed line, polygon, or filled object (#199)

Yes, this is something I want to get to eventually. At the moment, you can manually add a polygon to calculate area, perimeter etc. (under "measurements") but no automatic methods yet. 🔜

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