is it possible to detect selfie image in android?-CodePudding

I have list of images from MediaStore.images.media. is it possible to detect selfie images? I have read about mlkit Selfie Segmentation, but I guess it is about changing the photo?

CodePudding user response：

You can try getting EXIF data from images and compare some parameters. Add the following dependency to your build.gradle if you wish to utilize ExifInterface:

implementation "androidx.exifinterface:exifinterface:1.3.3"

After that you can get EXIF data from photo following next code:

Uri gfgUri; // the file uri
InputStream gfgIn;
try {
    gfgIn = getContentResolver().openInputStream(gfgUri);
    ExifInterface exifInterface = new ExifInterface(gfgIn);
    // Extract the EXIF tag here
} catch (IOException e) {
    // Handle any errors
} finally {
    if (gfgIn != null) {
        try {
            gfgIn.close();
        } catch (IOException ignored) {}
    }
}

You can use, for example, photo resolution for comparing rare and front photos. The resolution often differs: the camera facing the user has a lower resolution than the camera on the back.

A few examples I pulled from gsmarena.com:

Google Pixel 6 Pro: Main: 50 MP; Selfie: 11.1 MP;
Apple iPhone SE (2022): Main: 12 MP; Selfie: 7 MP;
Samsung Galaxy S22 5G: Main: 50 MP; Selfie: 10 MP;