Thumbnail image is always rotated, useExifOrientation parameter does not matter

[dmitry-weirdo]

Expected behavior

Image thumbnail is NOT rotated 90 degrees left.

Actual behavior

If image has height more than width, it is rotated 90 degrees left.

Whatever combinations of size, width, useExifOrientation, keepAspectRatio I set, the thumbnail is rotated. Image size is also always the same.

Code example:

    public static void generateThumbnail(File imageFile, File thumbnailFile, Integer width) {
        try {
            // First convert to BufferedImage
            BufferedImage bufferedImage = ImageIO.read(imageFile);

            // Make thumbnail
            Thumbnails
                .of(bufferedImage)
//                .size(THUMBNAIL_WIDTH, THUMBNAIL_WIDTH)
//                .keepAspectRatio(true)
//                .useExifOrientation(true)
                .width(width)
//                .height(width)
                .useExifOrientation(true)
                .outputFormat("jpg")
                .toFile(thumbnailFile);

            logger.debug("Thumbnail of image file {} generated to file {}", imageFile.getPath(), thumbnailFile.getPath());
        }
        catch (IOException e) {
            logger.error(String.format("Error while generating thumbnail of file %s to thumbnail file %s", imageFile.getPath(), thumbnailFile.getPath()), e);

            throw new RuntimeException(e);
        }
    }

Steps to reproduce the behavior

See the "Actual Behavior" section

Environment

• OS vendor and version: Microsoft Windows [Version 10.0.17134.1667]

• JDK vendor and version: java version "11.0.8" 2020-07-14 LTS Java(TM) SE Runtime Environment 18.9 (build 11.0.8+10-LTS) Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.8+10-LTS, mixed mode)

• Thumbnailator version: 0.4.12

[dmitry-weirdo]

Looks like it's working for File and InputStream, but not working for BufferedImage of this file.

            BufferedImage bufferedImage = ImageIO.read(imageFile);

            InputStream inputStream = new FileInputStream(imageFile);

            // NOT rotated!           
            Thumbnails.of(inputStream)
                .width(width)
                .outputFormat("jpg")
                .toFile("c:\\java\\thumbnail-input-stream.jpg");

            // NOT rotated!           
            Thumbnails.of(imageFile)
                .width(width)
                .outputFormat("jpg")
                .toFile("c:\\java\\thumbnail-image-file.jpg");

            // Rotated :( 
            Thumbnails.of(bufferedImage)
                .width(width)
                .outputFormat("jpg")
                .toFile("c:\\java\\thumbnail-buffered-image.jpg");

[coobird]

@dmitry-weirdo, Exif is metadata that's stored in certain image files. A BufferedImage does not contain Exif information. If you want to use Exif-based rotation, you will need to use either the File or InputStream as the input.

[coobird]

I'm closing this issue as it is expected behavior. Please refer to my previous comment for why rotation based on Exif won't work in the code you originally posted.

[Boldbayar]

IT is also happening when i work with FIle aswell, Thumbnails.of(targetLocation.toFile()) .useExifOrientation(true) .size(320, 320) .keepAspectRatio(true) .outputFormat("jpg") .toFiles(Rename.PREFIX_DOT_THUMBNAIL); response.setThumbnailPath("thumbnail." + fileName);