Generate a system able to autorotate pictures about openfoodfacts-ai HOT 10 CLOSED

This looks like a rather interesting problem because the orientation of an image can be arbitrary and can be decided only based on the content of the image. It would not always mean that the image should be in a Landscape/Portrait mode because the text on the image will determine its orientation.

For this, I suggest that we can use CV to detect a small sample of text on the image(even detecting the orientation of a character might work and make our lives easier). Based on this ,we rotate the image..

Possible issues-
1.Text is aligned both ways on the image.
2.Text is absent.
3.Vertically aligned text.

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@stephanegigandet Can we generate a dataset with a day's worth of selected ingredient pictures ?

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@stephanegigandet It has to be recent pictures, so that many ingredient lists are still poorly rotated.

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@teolemon I have created a small dataset of about 27 images which need rotation for ingredients and nutrition table.
https://github.com/JyotsanaS/off/tree/master/autorotate

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If no one is working on this issue, can I start working on it?

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This problem is similar to this StrackOverflow Question.
Tried the script on bunch of different images provided by @JyotsanaS.
The results are good but it sometimes detects the angle to be negative of the actual value (and vice versa), so the image is sometimes rotated in opposite direction.

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@Anubhav-Bhargava I think using image processing techniques ( non machine learning ) might not perform well on diverse data but I can be wrong here. I think this problem can be better solved using deep learning, I did see some papers on it which I am going to try now, lets see what technique works out better to solve this problem.

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Hi @teolemon if no one is working on this issue i would like to solve this issue?

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@teolemon Implemented in Robotoff, we should discuss how to use this feature in OFF

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@raphael0202 Perhaps in HungerGames ?

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