ImagePicker loses EXIF when resizing via maxWidth or maxHeight

[romaluca]

Hi, i'm using the plugin:
https://github.com/flutter/plugins/tree/master/packages/image_picker

for get images and photo. I'm using it also with maxWidth and maxHeight.

Is possible have the exif metadata before the resize?

How can i do it?

Thanks

[roughike]

What info do you specifically need?

There's no currently an API for this, but I'm interested in implementing it.

[romaluca]

I need:
Make, Model, FNumber, SpectralSensitivity, ExposureTime, FocalLength, GPSLatitude, GPSLongitude

I also wrote this flutter plugin:

https://github.com/romaluca/exif_flutter

(it is a bad port of this: https://pub.dartlang.org/packages/exifdart )

It works but only when i don't specify maxHeight or maxWidth in image picker

[roughike]

Ah, I see.

The EXIF data is lost since when you use maxWidth or maxHeight, a scaled version of the image is created and saved on the filesystem. This is so that we don't actually downscale the original picture in the users gallery, which might result in angry users.

So, in the case of maxWidth or maxHeight being used, the EXIF data should be copied from the original image to the scaled one.

This needs a new version of the image_picker plugin.

[ko2ic]

I fixed it. flutter/plugins#866

Please check if I am fixing what you are imagining.

[eseidelGoogle]

I've written notes about how to add exif on iOS/Android to: #10533 (comment) . I suspect all of these exif bugs are the same root cause and easy to fix.

[btastic]

I am experiencing the same issue after resizing the image on android, exif data is lost (can confirm it atleast for orientation). Any news on this?

[lifenautjoe]

Still experiencing this issue with image_picker: 0.5.0+3

[cyanglaz]

I'm fixing this in flutter/plugins#1586
I will create a separate PR to copy GPS data after this PR is merged in

[cyanglaz]

flutter/plugins#1586 is merged, you can use the latest version. Image picked now has the EXIF data copied from the original photo.

[github-actions]

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