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jpeg parser: extract GPS location from meta data

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This commit is contained in:
reger 2013-06-29 00:35:43 +02:00
parent e92b9275ce
commit 83763ee4a4
1 changed files with 42 additions and 30 deletions
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72
source/net/yacy/document/parser/images/genericImageParser.java
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@ -55,10 +55,12 @@ import net.yacy.kelondro.util.FileUtils;
import com.drew.imaging.jpeg.JpegProcessingException;
import com.drew.imaging.jpeg.JpegSegmentReader;
import com.drew.lang.ByteArrayReader;
import com.drew.lang.GeoLocation;
import com.drew.metadata.Directory;
import com.drew.metadata.Metadata;
import com.drew.metadata.Tag;
import com.drew.metadata.exif.ExifReader;
import com.drew.metadata.exif.GpsDirectory;
import com.drew.metadata.iptc.IptcReader;
public class genericImageParser extends AbstractParser implements Parser {
@ -101,7 +103,9 @@ public class genericImageParser extends AbstractParser implements Parser {
String description = null;
String filename = location.getFileName();
String ext = MultiProtocolURI.getFileExtension(filename);
if (mimeType.equals("image/bmp") || ext.equalsIgnoreCase("bmp")) {
double gpslat = 0;
double gpslon = 0;
if (mimeType.equals("image/bmp") || ext.equals("bmp")) {
byte[] b;
try {
b = FileUtils.read(sourceStream);
@ -111,7 +115,7 @@ public class genericImageParser extends AbstractParser implements Parser {
}
final IMAGEMAP imap = bmpParser.parse(b);
ii = parseJavaImage(location, imap.getImage());
} else if (mimeType.equals("image/jpeg") || ext.equalsIgnoreCase("jpg") || ext.equalsIgnoreCase("jpeg") || ext.equalsIgnoreCase("jpe")) {
} else if (mimeType.equals("image/jpeg") || ext.equals("jpg") || ext.equals("jpeg") || ext.equals("jpe")) {
// use the exif parser from
// http://www.drewnoakes.com/drewnoakes.com/code/exif/
// javadoc is at: http://www.drewnoakes.com/drewnoakes.com/code/exif/javadoc/
@ -143,35 +147,43 @@ public class genericImageParser extends AbstractParser implements Parser {
final Iterator<Directory> directories = metadata.getDirectories().iterator();
final HashMap<String, String> props = new HashMap<String, String>();
while (directories.hasNext()) {
final Directory directory = directories.next();
final Iterator<Tag> tags = directory.getTags().iterator();
while (tags.hasNext()) {
final Tag tag = tags.next();
// ! startswith "Unknown tag"
if (!tag.getTagName().startsWith("Unknown")) { // filter out returned TagName of "Unknown tag"
props.put(tag.getTagName(), tag.getDescription());
ii.info.append(tag.getTagName() + ": " + tag.getDescription() + " .\n");
}
final Directory directory = directories.next();
if (directory instanceof GpsDirectory) { // extracting GPS location
GeoLocation geoloc = ((GpsDirectory) directory).getGeoLocation();
if (geoloc != null) {
gpslat = geoloc.getLatitude();
gpslon = geoloc.getLongitude();
}
} else {
final Iterator<Tag> tags = directory.getTags().iterator();
while (tags.hasNext()) {
final Tag tag = tags.next();
if (!tag.getTagName().startsWith("Unknown")) { // filter out returned TagName of "Unknown tag"
props.put(tag.getTagName(), tag.getDescription());
ii.info.append(tag.getTagName() + ": " + tag.getDescription() + " .\n");
}
}
}
title = props.get("Image Description");
if (title == null || title.isEmpty()) title = props.get("Headline");
if (title == null || title.isEmpty()) title = props.get("Object Name");
author = props.get("Artist");
if (author == null || author.isEmpty()) author = props.get("Writer/Editor");
if (author == null || author.isEmpty()) author = props.get("By-line");
if (author == null || author.isEmpty()) author = props.get("Credit");
if (author == null || author.isEmpty()) author = props.get("Make");
keywords = props.get("Keywords");
if (keywords == null || keywords.isEmpty()) keywords = props.get("Category");
if (keywords == null || keywords.isEmpty()) keywords = props.get("Supplemental Category(s)");
description = props.get("Caption/Abstract");
if (description == null || description.isEmpty()) description = props.get("Country/Primary Location");
if (description == null || description.isEmpty()) description = props.get("Province/State");
if (description == null || description.isEmpty()) description = props.get("Copyright Notice");
}
title = props.get("Image Description");
if (title == null || title.isEmpty()) title = props.get("Headline");
if (title == null || title.isEmpty()) title = props.get("Object Name");
author = props.get("Artist");
if (author == null || author.isEmpty()) author = props.get("Writer/Editor");
if (author == null || author.isEmpty()) author = props.get("By-line");
if (author == null || author.isEmpty()) author = props.get("Credit");
if (author == null || author.isEmpty()) author = props.get("Make");
keywords = props.get("Keywords");
if (keywords == null || keywords.isEmpty()) keywords = props.get("Category");
if (keywords == null || keywords.isEmpty()) keywords = props.get("Supplemental Category(s)");
description = props.get("Caption/Abstract");
if (description == null || description.isEmpty()) description = props.get("Country/Primary Location");
if (description == null || description.isEmpty()) description = props.get("Province/State");
if (description == null || description.isEmpty()) description = props.get("Copyright Notice");
} catch (final JpegProcessingException e) {
//Log.logException(e);
// just ignore
@ -201,7 +213,7 @@ public class genericImageParser extends AbstractParser implements Parser {
location.getHost(), // Publisher
new String[]{}, // sections
description == null ? "" : description, // description
0.0f, 0.0f, // TODO parse location
gpslon, gpslat, // location
infoString, // content text
anchors, // anchors
null,