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how to identify the actual dimension from any image ???

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Akhilesh Singh
Akhilesh Singh 2014-7-14
回答： Image Analyst 2014-7-14
we have two images, one is without zooming and other is after zooming.
so the length/area of the second image will be more due to zoom.
so in image processing how can i find the actual length/area?

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Image Analyst
Image Analyst 2014-7-14
You need to have an object of known length in there that you can measure. See my attached demo.

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