how to detect angle of an image

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Tony
Tony 2014-3-14
回答： Nitin 2014-3-14
How would you detect if an image is not upright since different devices don't always save images in the proper upright position?

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Nitin
Nitin 2014-3-14
You might need a reference image / coordinates for the correct position and compare the difference between the two of them

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