Hi. Bruno. Thanks for your reply. I'll test it the following way you suggested.
> 1. Grab an image with some EXIF data > 2. Run exiftool and save the output somewhere > 3. Run your code > 4. Run exiftool again on the reduced image, save the output somewhere > 5. Diff the output I will report the results on this thread. Regards. 2022年10月27日(木) 10:32 Bruno Kinoshita <ki...@apache.org>: > Hi Cotton, > > I think your concerns are valid. I had a quick look and couldn't see in > updateExifMetadataLossy() chain of methods called anywhere where it would > update the ImageWidth and ImageLength. > > But probably the best way is to test yourself to verify it. You can try the > following: > > 1. Grab an image with some EXIF data > 2. Run exiftool and save the output somewhere > 3. Run your code > 4. Run exiftool again on the reduced image, save the output somewhere > 5. Diff the output > > I **think** you would have to adjust the image/length. But it would be nice > to confirm that. We should improve the javadoc of these classes as well to > document whether developers should worry about that or not. I'm moving > between countries this week/weekend, so I won't have time to create issues > and work on that for a while. But you can reply here if you are able to > confirm, or ping this thread again in a few months and I'd be happy to try > that. > > If you find anything broken or have suggestions for improvements in Commons > Imaging, feel free to create a JIRA Issue for those tasks. As for language, > do not worry because your English is fine. If you need help translating, > try deepl.com, Google Translate, and other free translation services that > may assist you too (that's what I'm doing right now, as I'm going to a > country where I don't speak the native language :) > > Cheers > > Bruno > > On Wed, 26 Oct 2022 at 22:27, cottonspace <cottonsp...@gmail.com> wrote: > > > Hello. I don't use English on a usually. Sorry for the hard-to-read my > > message. > > > > Thank you for publishing such a wonderful library. > > > > I want to resize an image, and apply Exif meta information (orientation > > direction, author, and so on) in original to the image after resized > image. > > My code is like this. > > > > --- begin --- > > // Original Image > > byte[] original = load(file); // some loader > > > > // Edit (resize, rotate, ..) > > byte[] resized = resize(original, width, height); // some edit methods > > > > // Apply original metadata into resized image > > TiffImageMetadata exif = ((JpegImageMetadata) > > Imaging.getMetadata(original)).getExif(); > > ByteArrayOutputStream baos = new ByteArrayOutputStream(); > > new ExifRewriter().updateExifMetadataLossy(resized, baos, > > exif.getOutputSet()); > > byte[] result = baos.toByteArray(); > > --- end --- > > > > Can I apply the OutputSet got from the original image to the image after > > resizing with ExifRewriter ? > > > > My question is that if the Dimension information such as Orientation > > information contained in Exif is reflected by ExifRewriter, it will > affect > > the actual image size. Doesn't the direction and the Exif information > > conflict with each other? > > > > My concerns are unnecessary? Please teach me. > > > > -- > > cotton > > > -- cottonsp...@gmail.com
