Extracting image thumbnails from JPEG

Hello,
I need to extract and display the thumbnails that are embedded in JPEG files. Does anybody know how to do that?
Thanks,
Stan

You sure there are thumbnails embedded in JPEG files? Its the first I've heard of it. Anyway, if you want to load a JPEG and get a thumbnail of any size, use java.awt.Image.getScaledImage(int,int,int)

Similar Messages

Extracting embedded thumbnails from JPEG

Hello,
I need to extract and display the thumbnails that are embedded in JPEG files. Does anybody know how to do that with Java 1.3.1?
Thanks,
Stan

multipost
http://forums.java.sun.com/thread.jsp?forum=4&thread=288112

Extracting Image Links From HTML

Hi, at the moment am trying to extract image locations from the html files i.e. the "src" part of <img> tag. Have tried using HTMLParserCallback as I know this allow you to extract links from a page. However when I open a document I know to have <img> tags in it, handleStartTag() is not called, I only get all the other tags. Any idea how to solve this problem? Thanks very much,
Ross

Hi,
Here's a portion of a class I wrote a while back....
Note the useMap variable I introduced in the constructor.
Some HTML files had the images in a "map" attribute, others in an "imgmap" attribute.
regards,
Owen
private class CallbackHandler extends HTMLEditorKit.ParserCallback
    private HTML.Tag tag;       // The most recently parsed tag
    private HTML.Tag lastTag;   // The last tag encountered
    private int nested = 0;
    private boolean useMap;
    public CallbackHandler(boolean useMap)
        super();
        this.useMap = useMap;
    public void handleText ( char[] data, int pos )
    public void handleStartTag ( HTML.Tag t, MutableAttributeSet attSet, int pos )
    public void handleSimpleTag ( HTML.Tag t, MutableAttributeSet attSet, int pos )
        if ( t.toString().equalsIgnoreCase ( "input" ) )
            boolean imagemap = false;
            String name = null;
            String src = null;
            if ( attSet instanceof SimpleAttributeSet )
                SimpleAttributeSet sattSet = (SimpleAttributeSet)attSet;
                Enumeration atts = sattSet.getAttributeNames();
                Object att;
                while ( atts.hasMoreElements() )
                    att = atts.nextElement();
                    if ( att.toString().equalsIgnoreCase ( "name" ) )
                        name = (String)sattSet.getAttribute ( att );
                        // got the name of the attribute
                        // Note : useMap is a boolean flag for you to set.
                        //        Some HTML pages used "map" attributes, others "imgmap" attributes
                        if ( useMap )
                            if ( name.equalsIgnoreCase ( "map" ) )
                                imagemap = true;
                        else
                            if ( name.equalsIgnoreCase ( "imgmap" ) )
                                imagemap = true;
                    if ( att.toString().equalsIgnoreCase ( "src" ) )
                        src = (String)sattSet.getAttribute ( att );
                if ( imagemap )
                    try
                        imagemapURL = new URL ( src );
                    catch ( MalformedURLException malEx )
                        System.out.println ("Invalid Image Map URL : " + src );
    public void handleEndTag ( HTML.Tag t, int pos )
}

Can I extract images/items from a pdf?

I lost my hard drive! (D'oh!)
But I do have some hi-res pdf files made from the original files (InDesign).
Is it possible to extract discrete components from pdfs? Such as images, text blocks, etc?
It seems like it should be possible, but I'm wondering if one must be a PostScript coder or somesuch.
Cheers!
~Ben

Excellent! Thank you both, George and Steve.
I have CS3, so v8.3.1 or Acrobat. So that process is Advanced > Document Processing > Export all images.
Oddly, it tells me that it can't extract/export vector images. I suppose that means AS SUCH, since it managed to export JPEG versions of images that I know were .eps format. Strange, but true!
Thanks again!
Ben

Extracting EXIF info from Jpeg + And Stitching Algorithm

I develop Stiching program for digital images in order to create Panoramas with Java. I need to extract EXIF meta data from Jpeg images : focus, focal lens, exposure, constrat, white balance, shutter speed et al.
I ve looked at several code in Java on google, i dont understand much, if anyone can explain it in a simple way for me plz, i will be very appreciate.
Also if anyone have any info on stitching algorithm using Java , it will be very helpful.
Thank you
Hoan

I examined your sample .jpg with Exiftool, the most authoritative metadata tool available, and I also used the following tools to examine the metadata:
OS X 10.9.5: Finder, Preview, Photoshop CC 2014, LR 5.6, exiv2
Windows 8.1: File Explorer, Irfanview 4.38
All of these were able to display the EXIF metadata, including exposure information, without problems, and Exiftool didn’t flag any nonconformities. So it seems that it’s the Android apps that aren’t conforming to the standards.
Looking at the internal structure of the LR-produced .jpg, I suspect that it is producing a layout of the IFD0, IFD1, and ExifIDF sections that the Android apps aren’t expecting (because the developers didn’t follow the standards). LR produces the following ordering: unused bytes, ExifIFD, IFD1, IFD0. A more typical ordering would be: (no unused bytes), IFD0, ExfIFD, IFD1. Both orderings conform with the standards.
You could test out this hypothesis by obtaining a copy of the free Exiftool and then in a Terminal window (Mac) or command prompt (Windows) do the following command:
exiftool –exif:usercomment=”Hello world!” sample.jpg
This will cause Exiftool to rewrite the Exif metadata in the more-common ordering. If the Android apps can now see the EXIF exposure metadata in the modified sample.jpg, then that confirms the apps are non-standards-conforming and should be fixed.

Extract image data from a bitmap image in C# HELP Please!!

Hi there,
I am trying to extract the image data from a bitmap file - i.e. delete the image's BMP header.
But I keep getting an error (System.IndexOutOfRangeException) in line 85 (if I am not mistaken) inFilename = args[0];
Where the Console Application just crashes.
https://msdn.microsoft.com/query/dev12.query?appId=Dev12IDEF1&l=EN-US&k=k(EHIndexOutOfRange);k(TargetFrameworkMoniker-.NETFramework,Version%3Dv4.5);k(DevLang-csharp)&rd=true
Any idea what is going wrong?
I thank you for your time and help in advance,
IP
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication1
class Program
private static string inFilename, outFilename;
private static string errorMessage;
private static void ShowUsage()
Console.WriteLine("BMP2CSV by David Bolton. http://cplus.about.com (C) 2013");
Console.WriteLine(@"Usage: bmp2csv input[.bmp] [output.csv]");
Console.WriteLine(@"[means optional]");
Console.WriteLine("Input extension must be .bmp, ouutput (if supplied) .csv");
private static bool outputCsv(byte[] data, int width, int height)
try
using (var sw = new StreamWriter(outFilename))
var ptr = 0;
for (var y = 0; y < height; y++)
var line = new StringBuilder();
for (var x = 0; x < width; x++)
line.Append(data[ptr++].ToString()).Append(',');
sw.WriteLine(line);
return true;
catch
Console.WriteLine("Error writing to " + outFilename);
return false;
private static bool ProcessFile()
try
using (var filein = new BinaryReader(File.OpenRead(inFilename)))
var Signature1 = filein.ReadByte(); // now at 0x1
var Signature2 = filein.ReadByte(); // now at 0x2
if (Signature1 != 66 || Signature2 != 77) // Must be BM
errorMessage = "Input File is not a BMP file";
return false;
filein.ReadDouble(); // skip next 8 bytes now at position 0xa
var Offset = filein.ReadInt32(); // offset in file now at 0ea
filein.ReadInt32(); // now at 0x12a
var fileWidth = filein.ReadInt32(); // now at 0x16
var fileHeight = filein.ReadInt32(); // now at 0x1a
filein.ReadBytes(Offset - 0x1a); // should now be at offset bytes into file
var data = filein.ReadBytes((int)filein.BaseStream.Length - Offset);
// read remainder of file into data- array of bytes
//Console.WriteLine("Data Length = {0}",data.Length);
return outputCsv(data, fileWidth, fileHeight);
catch
errorMessage = "Error reading " + inFilename;
return false;
private static void Main(string[] args)
errorMessage = "Ok";
if (!ExtractParameters(args))
return;
if (!File.Exists(inFilename))
Console.WriteLine("Cannot find file " + inFilename);
return;
if (ProcessFile())
Console.WriteLine("file successfully processed - output in " + outFilename);
else
Console.WriteLine("File processing failed: " + errorMessage);
private static bool ExtractParameters(string[] args)
inFilename = args[0];
var extension = Path.GetExtension(inFilename);
if (extension.Length == 0)
inFilename += ".bmp";
else
if (extension.ToUpper() != ".BMP")
ShowUsage();
return false;
switch (args.Count())
case 1: // No output filename so swap extensions
outFilename = Path.GetFileNameWithoutExtension(inFilename) + ".csv";
break;
case 2:
{ // check outfiulename has no extension or a .csv only
outFilename = args[1];
extension = Path.GetExtension(outFilename);
if (extension.Length == 0)
outFilename += ".csv";
else if (extension.ToUpper() != ".CSV")
ShowUsage();
return false;
break;
default: // no parameters? You get the usage message
ShowUsage();
return false;
return true;

You probably did not specify the command-line arguments, i.e. the name of input and output files. In order to do this in Visual Studio for debugging, see
https://msdn.microsoft.com/en-us/library/vstudio/1ktzfy9w(v=vs.100).aspx. So type something like “C:\My Folder\MyFile.bmp” “C:\My Folder\MyOutput.csv”, including quotation marks, according to your real disks and paths.
The program should be fixed to detect such errors and call
ShowUsage. Maybe ask the author.

Extracting Image Data from DB

Hello,
we are running an archive for articles from our magazines, inside the article there are several images. At the moment we store the images in the filesystem and deliver them as HTML Link with the OAS to the customer.
The problem is the image size. Some images are very big. So I would like to load them into the Database use the ordimage.process Package to scale them down.
Now the problem.
How can I retrieve the converted image from the DB?
Directly with the OAS or extract them to the Filesystem and use a link in HTML code.
Thanks
Det

Hi,
One approach would be to use the interMedia Web Agent. It is designed to retrieve (and upload) multimedia data, including images, from an Oracle database and supports a number of web servers, including OAS. You can download the interMedia Web Agent from OTN. The Web Agent uses PL/SQL procedures to locate images, etc, from the database. You can write these procedures yourself, or use the Code Wizard in the interMedia Clipboard Windows-NT application to create the procedures for you.
Hope this helps,
Simon
null

URGENT - Extract Image Files From Long Raw Column

Hi.
I have to extract image files (tif and wmf format) from "long raw" column and put them in a directory, using a PL/SQL procedure.
Can anyone help me.
Thanks

Well that is interesting, that ORA returns no records on Metalink. Anyway, that was for my own curiosity.
As you are on 10g, this is how I would write a long raw to a file if I had no choice:
1) create a gtt with a column of type blob
2) insert into the gtt the long raw column using the to_lob conversion function
3) you now have a lob!
4) open a binary file for writing using utl_file (binary mode was introduced in 10g)
4) use dbms_lob to read through the blob and write it in chunks to the file
You will have to do this row by row. It will be painfully excrutiatingly slow.
This is basically your only choice unless you have a OCI programmer to hand. In which case I would be getting them to write the C code to read the long raw column and write it to a file. This could then be compiled into a library and called as an external procedure from PL/SQL.
HTH
Chris

How do I find and extract images in from email

Over the years, plenty of people have shared pictures with me via email. I want to find all those pictures and make copies to put into aperture. I don't want to grab all the pictures that are .gifs that are icons from applications or signature etc.
Does anyone know a good way or app to do this? Finder doesn't seem to allow me to exclude certain files.

mass wrote:
Finder doesn't seem to allow me to exclude certain files.
Let's get a few things out of the way first.
As to X1, forget it. It's Windows only, and it's not exactly cheap.
Also, nothing I say applies to Outlook. I assume you're talking Outlook 2011, and I have no clue how it works.
As to Finder, it doesn't do searches. All searches are done by Spotlight. Finder's Find command, the Spotlight menu, these are just different ways of interacting with Spotlight. And, yes, of course you can exclude certain files. You simply have to learn to use Spotlight. I'm not a fan -- I think Spotlight is not a search engine, but a sorry, pathetic excuse for one -- but still, it can do a few things if you handle it right.
Now, about Mail. AFAIK, Apple does not document the <~/Library/Mail> structure, so what follows is from my own observations, and hence not authoritative.
Incoming and outgoing messages from your mail accounts, ie, listed in Mail.app's Sidebar under "Mailboxes", are stored in <~/Library/Mail/[account]>, inside .mbox packages, as individual .emlx files. An .emlx file contains the raw message, plus an XML footer. Any attachments are, of course, inside the raw message in base64 encoding. The .emlx metadata does not include whether or not the message contains an attachment, so you can't use Spotlight to search for messages with attachments, nor can you do that in Mail.
However, messages which are moved from your mail accounts to local, user-created mailboxes, listed in Mail.app's Sidebar under "On My Mac", are treated slightly differently. They are still stored as .emlx files (including attachments) inside .mbox packages, which, in their turn, are inside a directory named "Mailboxes", but the attachments are also extracted to an Attachments directory inside the respective .mbox package, being stored inside directories labelled with the respective message's number. With this arrangement, finding images with Spotlight becomes trivial.
For instance, you say you want to find all images which are not GIFs. In Finder, select <~/Library/Mail/Mailboxes>, then ⌘F or ⇧⌘F. In the search field, type
kind:image NOT .gif
(the Boolean operator NOT is case sensitive). This should find all images which do not contain the string ".gif" in their file name. Of course, there are strings attached. If there is an image named, say, "my_photo.gif.jpg", it will be missed. Also, "kind:image" only looks for TIFF, JPEG, PNG, GIF and BMP formats. It will probably not find RAW images, or those in more exotic formats.
So, your first step in Mail (if you haven't done so already) is to organise your mail, irrespective of attachments, in mailboxes and folders in "On My Mac". (IMHO, this is a good idea in any case.)
The next step is to use a Spotlight search as described above to find all images. After that, it's up to you. I don't know how Aperture works. Maybe you can just import them, or maybe you need to copy them to some folder. (Remember, you may copy stuff from <~/Library/Mail>, but don't move or delete any of it in Finder -- or the wrath of Mac OS X will strike down upon thee with great vengeance and furious anger!) If you do need to copy them to some other folder, I suspect you'll discover another bridge to cross, but we'll deal with that when -- if -- we get there.

Extract images's from sms on backup

Hi all!
I have new iPhone, I did a backup of the old iPhone using iTunes storing the backup on my mac
now when I restored my new iPhone with my back up many of my sms did not restore
I do have many backups of my iphone on my mac
is there a way to extract my sms and mms from the backups

I don't think you can get it easily Calc manager stores rule as XML file and if you look at the xml file the code starts from something called as !CDATA (I don't know how close i'm, but it is something with CDATA).
I would recommend to backup all the tables and if you are interested in exporting the code part only, then you'll need a OS based script or even use Oracle XMLTable (I've not tried it)
Regards
Celvin
http://www.orahyplabs.com

How to check image GPS data and get image file from image field

Hello,
I have some trouble and want to fix this problem.
1. I want to validate image file before its attached in image field about the image file have a GPS data or not. Have any way that can be check about image has contained a GPS data?
2. After validate image and PDF form is upload to the server. I want to get image file that embed in image field, because I have to extract image from PDF form and store this image in project image folder. If this topic can be fix by code script please give me some example code.
Thakyou for every comment and suggestion
Best Regards,
Mai

Hi Naill,
First I have to say thankyou for your answer.
About my (1) question, My image fields have set to be a embedded data and I try to test many example script of image fields.I can get image content type, image size. But that not work when I used ImageField1.desc.embeddedHref.value. It's response as "Unknown Embedded URI". Therefore, image field is and embedded data. How can I access filename?
(2) In that forum. As I see, his problem is about how to automate change image field with href image file. But I want to extract an exist embedded image in PDF form to normal image file with original metada (such as extract image filed to .JPEG with GPS data. Same as before attached in PDF form.). There has any concept or solution in this problem?
Best Regards,
Mai

Image size from header

Hi,
I'm trying to extract image size from header for PNG, JPG, TIFF, BMP and GIF files. So far I got PNG working. I'm having problems finding size info for JPG files. Anyone knows where I can read about it (i didnt find nothing on google) or have the code that works? also for the other image types?
P.S. I dont wanna read the entire image using Image class cause its too slow.

Code Snippet:
ImageInputStream imageStream =
        ImageIO.createImageInputStream(/*File or InputStream*/);
java.util.Iterator<ImageReader> readers =
        ImageIO.getImageReaders(imageStream);
ImageReader reader = null;
if(readers.hasNext()) {
    reader = readers.next();
}else {
    imageStream.close();
    //can't read image format... what do you want to do about it,
    //throw an exception, return ?
reader.setInput(imageStream,true,true);
int imageWidth = reader.getWidth(0);
int imageHeight = reader.getHeight(0);
reader.dispose();
imageStream.close();

Why is my uploaded images thumbnails are desaturated ?

Can anyone explain to me what am I doing wrong ?
In my mac I see everything perfect the thunbnails in lightroom looks fine, but when I upload my images online the image thumbnails is desaturated.
This is an example of one of my images Thumbnail from a website :
And thats is how it should look like (this is how it looks like when i enter the image frome the same website) :
Please help me understand why it is happening ?
Thanks...

Looks lime you're uploading in the wrong color space and the website doesn't correctly tag the downscaled thumbnails with the color space. Make sure to select sRGB as the color space in your export.

How to disable the automatic conversion from JPEG to TIFF?

I am using Keynote '09 and Safari 4 on OS X 10.6.8, and I often want to drag and drop a JPEG image from Safari to my slides. I would like to keep the image format as is, but Keynote automatically converts the image format from JPEG to TIFF, so the .key file size becomes large.
Does anyone know how to disable this automatic conversion? Any idea? I know that I can use the original format if I save the JPEG image at a temporary location, such as ~/Desktop. But I would prefer simpler way. Drag and drop is the best.

Indeed, having the same problem here. A simple PPT file that was 1 MB ballons often to more than 10 x the size as a KEY file. If you rename to zip and open, one notices lots of completely useless "PLACEHOLDER" and background files that occupy several MB in total, plus some small JPGs have been converted to very large PNGs. This is truly annoying.
A similar lack of "file size economy" is present in all applications apple produces for the ipad/iphone. Images I uplodaded to the photo app become very large (often 10 x bigger). WTH apple? Be more economical! Even my 64 GB ipad2 is starting to feel small with your waste.

I am trying to use photomerge compose. I open one standard jpeg image and one image that is my business logo in a png format. When I select the png image, to extract the logo from it, it appears as all white and will not allow me to select the logo from

I am trying to use photomerge compose. I open one standard jpeg image and one image that is my business logo in a png format. When I select the png image, to extract the logo from it, it appears as all white and will not allow me to select the logo from it. It has worked in the past but I downloaded the update today and photomerge will not work correctly. Any ideas?

hedger,
How do you expect anyone to help when we don't know a darned thing about the file, abut your setup, exact version of Photoshop and your OS, machine specs, etc.?
BOILERPLATE TEXT:
Note that this is boilerplate text.
If you give complete and detailed information about your setup and the issue at hand,
such as your platform (Mac or Win),
exact versions of your OS, of Photoshop (not just "CS6", but something like CS6v.13.0.6) and of Bridge,
your settings in Photoshop > Preference > Performance
the type of file you were working on,
machine specs, such as total installed RAM, scratch file HDs, total available HD space, video card specs, including total VRAM installed,
what troubleshooting steps you have taken so far,
what error message(s) you receive,
if having issues opening raw files also the exact camera make and model that generated them,
if you're having printing issues, indicate the exact make and model of your printer, paper size, image dimensions in pixels (so many pixels wide by so many pixels high). if going through a RIP, specify that too.
etc.,
someone may be able to help you (not necessarily this poster, who is not a Windows user).
a screen shot of your settings or of the image could be very helpful too.
Please read this FAQ for advice on how to ask your questions correctly for quicker and better answers:
http://forums.adobe.com/thread/419981?tstart=0
Thanks!

Extracting image thumbnails from JPEG

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