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  1. #1
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    Measure distance in JPG image

    I have a jpg image and I need to measure the space/distance between two items. Suggestions?

    Thanks.
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  2. #2
    Administrator Rick Corbett's Avatar
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  3. #3
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    Thank you Rick, I'll check 'em out.
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    Administrator satrow's Avatar
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    To get a real world (rather than pixel count) estimate of distance you'll need the Exif data for lens used, focal length, distance to focusing point, f-stop and GPS data if you can get it. Then the fun begins

    Here's an older guide that might (though you'll probably still need to use best guesses to improve the accuracy, esp. if you don't 'know' the location): How to measure the size of an object using a camera

    Pretty sure there are other guides that would be closer to your specific needs, I'll dig around later if I can find the time.

  5. #5
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    Thanks.

    I'll take a look.
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    Administrator Rick Corbett's Avatar
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    On reflection, satrow's answer is MUCH better than mine.

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    Administrator satrow's Avatar
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    Quote Originally Posted by Rick Corbett View Post
    On reflection, satrow's answer is MUCH better than mine.
    We're both only guessing, not enough detail to go on (yet)

  8. #8
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    I've found all the answers useful.

    Details: I have a jpg image and I need to measure the space between two points (structures). The image was built using another app that takes a STL file to construct various parts and output the jpg. I'm not able to read dimensions from the STL file.

    There are other ways to determine the info I need so reading the jpg is only one. I've determined the info I need so thanks to all!
    Gigabyte Z97X-UD5H , Intel i7 4770K @4.7Ghz using 1.3V
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  9. The Following User Says Thank You to deeppow For This Useful Post:

    satrow (2018-10-17)

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