'Sample of lossless image rotate via commons imaging

I found that commons imaging library fits my needs best of all, but there is a lack samples of this library usage. Does anyone have an example how to rotate jpeg image lossless (i.e. by changing file metadata only)? Thanks!

javaimagejpegimaginglossless


Solution 1:[1]

There is a class RotatedIcon (see links) that can be used like this

        if (imageOrientation.equals("3")) {
          rotatedIcon = new RotatedIcon(imageIcon, RotatedIcon.Rotate.UPSIDE_DOWN);
        } else if (imageOrientation.equals("6")) {
          rotatedIcon = new RotatedIcon(imageIcon, RotatedIcon.Rotate.DOWN);
        } else if (imageOrientation.equals("8")) {
          rotatedIcon = new RotatedIcon(imageIcon, RotatedIcon.Rotate.UP);
        }

imageOrientation is a property of image meta data (e.g. EXIF)

https://tips4java.wordpress.com/2009/04/06/rotated-icon/

https://github.com/griffon/griffon-javatips-plugin/blob/master/src/main/com/wordpress/tipsforjava/swing/RotatedIcon.java

Solution 2:[2]

See the answer to this question on how to add/remove meta data using the Commons Imaging library. The tag you would want to set is org.apache.commons.imaging.formats.tiff.constants.TiffTagConstants#TIFF_TAG_ORIENTATION.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 MLindwurm
Solution 2 nils

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