[jira] [Commented] (IMAGING-170) TIFF image gains significant size using TiffImageWriterLossless

["Gary Lucas (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IMAGING-170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14945145#comment-14945145 ] 

Gary Lucas commented on IMAGING-170:
------------------------------------

I have conducted more testing on the patch I contributed last month, including pixel-by-pixel comparisons for before and after files (reading source files, writing image, reading back output image and comparing the pixels).  I tested all files in the Apache Commons Imaging suite, plus a number of GeoTIFF files I've accumulated from various sources for my own use.   So I believe it is ready to be included in the Imaging project code base. 

And, just in case a release statement is required nowadays, here it is: I hereby release the patch that I contributed, Imaging_170_2015_09_21.patch, for use by the Apache Software Foundation and all interested parties according to the conditions specified in the Apache License, Version 2.0 described at http://www.apache.org/licenses/

> TIFF image gains significant size using TiffImageWriterLossless
> ---------------------------------------------------------------
>
>                 Key: IMAGING-170
>                 URL: https://issues.apache.org/jira/browse/IMAGING-170
>             Project: Commons Imaging
>          Issue Type: Bug
>          Components: Format: TIFF
>    Affects Versions: 1.0
>         Environment: System: Fedora release 21, kernel version: 3.18.7-200.fc21.x86_64, JAVA: openjdk version "1.8.0_31", IDE: Eclipse Kepler 2, Build id: 20140224-0627
>            Reporter: Remigiusz Malessa
>            Priority: Minor
>         Attachments: Imaging_170_2015_09_21.patch, kwf00346.tif
>
>
> Good afternoon, 
> I am posting an issue report as suggested by mr Benedikt Ritter. It's my first issue report and I've just recently started using the Commons Imaging,  so please go easy on me. 
> ------------------------------------------------
> Using Commons Imaging I am reading a Tiff image (will attempt to attach it to this ticket), then I remove a tag (Focal Plane Resolution Unit) and then I save the new TiffOutputSet to the system using TiffImageWriterLossless.
> The original image is 15MB, the new image (with the Tag removed) is 28MB.
> Here's how I do it:
> {code:title=RemoveTag.java|borderStyle=solid}
> import java.awt.image.BufferedImage;
> import java.io.File;
> import java.io.FileOutputStream;
> import java.io.IOException;
> import java.io.OutputStream;
> import java.util.HashMap;
> import java.util.List;
> import java.util.Map;
> import org.apache.camel.Exchange;
> import org.apache.commons.imaging.ImageFormats;
> import org.apache.commons.imaging.ImageReadException;
> import org.apache.commons.imaging.ImageWriteException;
> import org.apache.commons.imaging.Imaging;
> import org.apache.commons.imaging.common.ImageMetadata;
> import org.apache.commons.imaging.formats.tiff.TiffField;
> import org.apache.commons.imaging.formats.tiff.TiffImageMetadata;
> import org.apache.commons.imaging.formats.tiff.write.TiffImageWriterLossless;
> import org.apache.commons.imaging.formats.tiff.write.TiffOutputDirectory;
> import org.apache.commons.imaging.formats.tiff.write.TiffOutputSet;
> File tInputFile = new File("/home/rem/TEMP/tags.original.tif");
> File toutputFile = new File("/home/rem/TEMP/tags.new.tif");
> final BufferedImage image = Imaging.getBufferedImage(tInputFile);
> ImageMetadata tMetadata = Imaging.getMetadata(tInputFile);
> TiffImageMetadata imageMetadata = (TiffImageMetadata) tMetadata;
> outputSet = imageMetadata.getOutputSet();
> TiffOutputDirectory exifDirectory = outputSet.getExifDirectory(); 
> exifDirectory.removeField(41488);
> ImageFormats format = ImageFormats.TIFF;
> Map<String, Object> params = new HashMap<String, Object>();
> BufferedImage image = Imaging.getBufferedImage(tInputFile);
> byte[] bytes = Imaging.writeImageToBytes(image, format, params);
> TiffImageWriterLossless writerLossLess = new TiffImageWriterLossless(bytes);
> writerLossLess.write(os, outputSet);
> {code}



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