[IMAGING-170] TIFF image gains significant size using TiffImageWriterLossless

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 1.0-alpha1
• Component/s: Format: TIFF

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

• Assignee: Unassigned
• Reporter: Remigiusz Malessa
• Created: 27/Apr/15 13:30
• Updated: 06/Oct/15 14:59

Description

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.
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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:

RemoveTag.java

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);