IChat filter .PNG image on jabber protocol
Hi everybody,
Is there any reason why ichat filter .PNG images send through iChat server (in default setup on new macmini server)
If we send .png file format we receive empty bubble always.
With Best Regard
Marek Weisskopf
on lion .png images also not transfered thru ichat why?
Similar Messages
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How to use iChat to register a new Jabber Account
I work in an office with all Macs and we'd like to begin using iChat for intra-office messaging. Many of us already have AIM accounts, but we'd like to keep internal office communication strictly internal. We have a computer running Parallels Server and I've downloaded some different Jabber virtual appliances. The difficulty is that when I try to connect from iChat I'm continually prompted for a password.
Now, I've read that Jabber needs an account to be "registered" and several messaging clients (Psi, Adium, etc) support that registration process. What I'd like to know is either:
a) How can one use iChat to perform the Jabber account registration process?
or
b) Is there another suggested piece of software that could be used by an administrator or one individual that could complete that process so that clients could use iChat?
That ought to do it.
Thanks.Hi,
With the exception of the Get a iChat Screen Name button in the First pane of Add an Account ichat has no other way to Register any name.
AN MobileMe name from Apple, an AIM Name for the AIM site or a Google Name all require that you register via a web Browser on a site.
Some Other Jabber servers also allow you to do this but on the whole it needs something like Psi or AdimuX that have the Jabber Registration module.
However if you are using OX Server then the Tiger and Leopard version have an iChat Server (which is a Jabber Server) on which Accounts can be set up.
Leopard iChat Server Forum
9:30 PM Tuesday; June 2, 2009
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat" -
How to convert 24bits png image into 8 bits image
Hi,
I have gone through some of threads in this forum on changing color bits. But, I still can find right way to change my image (24bits) into different color bits(8 bits). The reason i want to change the color bits because I am getting a GIF image from map server, convert it into PNG format then rescale then into size of mobile phone screen.The PNG image is really has large data length , so the it took a while to load the whole image on screen.
Note : The following code is taken from few threads in this forum and i have modified it to suit my application.
I have no idea about Java2d...any help really appreciated...Thanks in advance!!!
My code is as follow:-
public File Scale(int width, int height, BufferedImage ImgSrc)
try
//BufferedImage bi = ImageIO.read(ImgSrc);
//int w = bi.getWidth(), h = bi.getHeight();
//Image oldRescale = bi.getScaledInstance(i, j, Image.SCALE_SMOOTH);
BufferedImage Rescale = rescale(ImgSrc, width, height);
//ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
//ColorConvertOp op = new ColorConvertOp(cs, null);
//Rescale = op.filter(Rescale, null);
File outfile = new File("map.png");
ImageIO.write(Rescale, "png", outfile);
BufferedImage fromFile = ImageIO.read(outfile);
ColorModel cm = fromFile.getColorModel();
System.out.println(cm.getClass() + ", bits/pixel=" + cm.getPixelSize());
catch(Exception e)
e.printStackTrace();
return new File("map.png");
public static GraphicsConfiguration getDefaultConfiguration()
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice gd = ge.getDefaultScreenDevice();
return gd.getDefaultConfiguration();
public static BufferedImage copyRescaled(BufferedImage tgt, BufferedImage src)
Graphics2D g2 = tgt.createGraphics();
int w=tgt.getWidth(), h=tgt.getHeight();
hintForBestQuality(g2);
g2.drawImage(src, 0, 0, w, h, null);
g2.dispose();
return tgt;
public static Graphics2D hintForBestQuality(Graphics2D g2)
g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2.setRenderingHint(RenderingHints.KEY_RENDERING,
RenderingHints.VALUE_RENDER_QUALITY);
return g2;
public static BufferedImage rescale(BufferedImage src, int w, int h)
int transparency = src.getColorModel().getTransparency();
GraphicsConfiguration gc = getDefaultConfiguration();
BufferedImage tgt = gc.createCompatibleImage(w, h, transparency);
return copyRescaled(tgt, src);First, we need to be clear about what you're trying to do -- is it rescale an
image or insure that the image is saved with a 8bit pixel depth? Or both? You are also
using GraphicsConfiguration's createCompatibleImage, which is excellent if you are going
to display the image immediately because it might be hardware accelerated
or compatible with hardware format, but you mentioned mobile phone screens, so
there is no advantage to using GraphicsConfiguration in that case, and if fact, it's
probably changing your ColorModel when you're not looking.
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;
import javax.swing.*;
public class Example {
public static void main(String[] args) throws IOException {
URL url = new URL("http://java.sun.com/developer/technicalArticles/GUI/JavaServerFaces/fig2.gif");
BufferedImage image = ImageIO.read(url);
System.out.println("image's colormodel = " + image.getColorModel().getClass());
BufferedImage rescaled = scaleAndConvertColorModel(image, 0.75, null); //GIF => IndexColorModel
System.out.println("rescaled's colormodel = " + image.getColorModel().getClass());
File png = new File("junk.png");
ImageIO.write(rescaled, "png", png);
BufferedImage fromFile = ImageIO.read(png);
System.out.println("fromFile's colormodel = " + image.getColorModel().getClass());
JPanel cp = new JPanel(new GridLayout(0,1));
addTo(cp, image, "original image");
addTo(cp, rescaled, "rescaled image");
addTo(cp, fromFile, "png file image");
JFrame f = new JFrame("Example");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setContentPane(cp);
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
Will rescale and convert colormodel if necessary.
ColorModel == null => don't convert. May return src if suitable.
public static BufferedImage scaleAndConvertColorModel(BufferedImage src, double scale, ColorModel cm) {
int w0 = src.getWidth();
int h0 = src.getHeight();
int w = (int) (w0 * scale);
int h = (int) (h0 * scale);
ColorModel cm0 = src.getColorModel();
if (cm == null)
cm = cm0;
if (w==w0 && h==h0 && cm.equals(cm0))
return src;
BufferedImage tgt = createImage(w, h, cm);
Graphics2D g = tgt.createGraphics();
if (scale < 1) {
Image temp = src.getScaledInstance(w, h, Image.SCALE_AREA_AVERAGING);
g.drawImage(temp, null, null);
} else {
hintForBestQuality(g);
g.drawRenderedImage(src, AffineTransform.getScaleInstance(scale, scale));
g.dispose();
return tgt;
public static BufferedImage createImage(int w, int h, ColorModel cm) {
if (w <= 0 || h <= 0)
throw new IllegalArgumentException("...");
boolean alphaPremultiplied = cm.isAlphaPremultiplied();
WritableRaster raster = cm.createCompatibleWritableRaster(w, h);
return new BufferedImage(cm, raster, alphaPremultiplied, null);
public static Graphics2D hintForBestQuality(Graphics2D g) {
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
return g;
static void addTo(Container c, BufferedImage image, String title) {
JLabel label = new JLabel(new ImageIcon(image));
label.setBorder(BorderFactory.createTitledBorder(title));
c.add(label);
} -
Applying filters to PNG Images
Hi
I would like to know how to implement filters or Operators such as Alpha filtering,LookupOp,ConvolveOp (or any kind of filter which makes the image blur or partially transparent) to a PNG Image and then revert back to the original image.
Thanks,Laksh1. Have you tried doing the tutorial?
2. What do you mean by "revert back to the original image" -- are you trying to find filters that are the inverse of other filters?
Here's a demo. I create a buffered image, write it out to a png file and read it back in.
Then I convert its type (the blur filter didn't want to work, otherwise!!). I run the
image through the filter and save it to another file, displaying the images along the way.
import java.awt.*;
import java.awt.font.*;
import java.awt.geom.*;
import java.awt.image.*;
import java.io.*;
import javax.imageio.*;
import javax.swing.*;
public class Example {
public static void main(String[] args) throws IOException {
File file = new File("temp.png");
ImageIO.write(createSampleImage(), "png", file);
BufferedImage source = ImageIO.read(file);
System.out.println("type = " + source.getType());
BufferedImage converted = convertType(source, BufferedImage.TYPE_INT_RGB);
BufferedImage blurred = blur(converted);
ImageIO.write(blurred, "png", new File("blurred.png"));
JPanel panel = new JPanel(new GridLayout(0,1));
addImage(panel, source, "from png file");
addImage(panel, converted, "TYPE_INT_RGB source");
addImage(panel, blurred, "blurred image");
JFrame f = new JFrame("Example");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setContentPane(new JScrollPane(panel));
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
static void addImage(Container cp, BufferedImage image, String title) {
JLabel label = new JLabel(new ImageIcon(image));
label.setBorder(BorderFactory.createTitledBorder(title));
cp.add(label);
static BufferedImage createSampleImage() {
Font font = new Font("Lucida Bright", Font.ITALIC, 72);
String text = "Sample Text";
Rectangle2D bounds = font.getStringBounds(text, new FontRenderContext(null, true, true));
int w = (int) Math.ceil(bounds.getWidth());
int h = (int) Math.ceil(bounds.getHeight());
BufferedImage image = new BufferedImage(w,h,BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
g.setFont(font);
g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
g.setPaint(Color.WHITE);
g.fillRect(0, 0, w, h);
g.setPaint(Color.BLACK);
g.drawString(text, (float) -bounds.getX(), (float) -bounds.getY());
g.dispose();
return image;
public static BufferedImage convertType(BufferedImage source, int type) {
if (source.getType() == type)
return source;
BufferedImage result = new BufferedImage(source.getWidth(), source.getHeight(), type);
Graphics2D g = result.createGraphics();
g.drawRenderedImage(source, null);
g.dispose();
return result;
static BufferedImage blur(BufferedImage image) {
BufferedImage result = new BufferedImage(
image.getWidth(), image.getHeight(), BufferedImage.TYPE_INT_RGB);
float ninth = 1.0f / 9.0f;
float[] kernel = {ninth, ninth, ninth, ninth, ninth, ninth, ninth, ninth, ninth};
ConvolveOp op = new ConvolveOp(new Kernel(3, 3, kernel), ConvolveOp.EDGE_NO_OP, null);
return op.filter(image,result); -
How to turn off PNG Images?
PNG is a format for (compressed) images just like the JPG format. There is no way to disable this format.
If you have a problem with images on some web pages then you may need to block images from some domains.
You can look at the Adblock Plus extension to block specific content.
* Adblock Plus: https://addons.mozilla.org/firefox/addon/adblock-plus/
You need to subscribe to a Filter list (e.g. the EasyList).
* http://adblockplus.org/en/subscriptions
* http://adblockplus.org/en/getting_started -
Every time i open Ichat – i get a million "jabber authorization" notificati
Hello;
I am trying to use google talk in my Ichat so I can add all my MSN contacts. every time i tried to open Ichat i got aroung 1000 "jabber authorization notifications" that are blocking the Ichat.
Is there anyway I can fix it? Any Idea how?
Thanks for your help!Hi,
My understanding is that if they have already been Authorized in MSN (Or other MSN able client) then they should be here as well.
I am not sure there is a global acceptance option. (although you could try highlighting all the Buddies in the list and see if any other options pop up)
Nor am I aware of an Auto-accept or an option not to ask.
I have never been re-asked for Authorization when I have added an Authorized Buddy to a list on my two computers if it is already Authorised in another Buddy List.
6:10 PM Saturday; October 24, 2009
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat" -
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! -
How can I add .PNG images to templates without getting a white background?
I'm having problems with a image field when I add a .png image which doesnt have a background it is showing up with a white background. Is it possible to use images in templates so you can overlay them on something else?
Hi, You can do this but only with a PNG with a palette of 256 colors (maybe GIF as well) so doesn't get a lot of use, good enough for image buttons and the like, but might be ok for your image as it does not have that many colors. Otherwise radzmar's suggestion would be the better approach.
This is the link I was tring to find (in your previous thread) that tells how to do it using GIMP (a free image editor), http://smartforms.business.gov.au/DeveloperResources/Pages/HintsandTips.aspx , but the one I have uploaded here comes from photoshop (in photoshop it is called an indexed png).
Regards
Bruce
p.s. I'm always on the lookout for a new beer to try if this one you would recommend? 3% and all. -
How to load a PNG image from a location in CF card
Hi,
I am using WTK 2.5.2. I wanted to load a PNG image to Image object. The image is loaded when I have it in the classes folder. But I want to select different image from a different location. If I try to open an Image to createImage(String) from a different location, I get IOException.
Please help me.
Thanks
Deekshit MI got the answer, I should be using Image.createImage(InputStream) API. It works fine.
Thanks
DM -
Use SVGAnimator to display a SVG with xlink PNG image
I tried the M2GDemo and it works without this image part
SVGAnimator animator =
SVGAnimator.createAnimator( image );
// add our custom event listener
animator.setSVGEventListener(
new CustomEventListener( image, animator ) );
// get the Canvas for this player: requires a cast
Canvas canvas = (Canvas) animator.getTargetComponent();
I modify the requestResource a bit to get Image from root1.
public void requestResource(ScalableImage inImage, String inURI)
int pos = inURI.indexOf(":");
if (pos >0){
inURI = inURI.substring(pos);
inURI = "file:///root1/"+inURI;
try
Connector.openInputStream(inURI);
catch ( IOException ioe )
ioe.printStackTrace();
<image x='90.0' y='69.46001' width='222.7' height='152.25' xlink:href='myImage.png'/>
Now I stuck with the error below.
Using Pisces Renderer (native version)
loadStarting : true
loadComplete : true
loadingFailed: false
loadStarting : true
loadComplete : true
loadingFailed: falsejava.lang.ArrayIndexOutOfBoundsException
at com.sun.perseus.model.Text.applyXMLSpaceDefault(+86)
at com.sun.perseus.model.Text.applyXMLSpace(+37)
at com.sun.perseus.model.Text.layoutText(+70)
at com.sun.perseus.model.Text.checkLayout(+13)
at com.sun.perseus.model.Text.paint(+12)
at com.sun.perseus.model.ModelNode.paint(+9)
at com.sun.perseus.model.StructureNode.paint(+16)
at com.sun.perseus.model.ModelNode.paint(+9)
at com.sun.perseus.model.StructureNode.paint(+16)
at com.sun.perseus.model.ModelNode.paint(+9)
at com.sun.perseus.model.DocumentNode.paint(+16)
at com.sun.perseus.model.SimpleCanvasManager.fullPaint(+108)
at com.sun.perseus.model.SimpleCanvasManager.updateCanvas(+18)
at com.sun.perseus.midp.SVGCanvas$1.run(+87)
at com.sun.perseus.util.RunnableQueue.run(+271)
RunnableQueue terminatingUncaught exception java/lang/ArrayIndexOutOfBoundsException.
Bascially all I need is a viewer to display SVG with xlink to PNG image without the use or tinyline. If I want to get the PNG image from http, what should I do?
Any response will be greatly appreciated.> This technique is really just using a BEE, there is
> documentation on the BEE concept in the online help
> and Brian McKellar has a weblog on the subject as
> well.
OK, I think I get the idea. Will check the stuff. Thanks.
> Notice the strange D at the end of the line. This
> isn't in the original posting. Perhaps this is just
> bad cut and paste.
Just bad copy paste. Yes.
> You say that this isn't working for you - but you
> don't describe the results. Is there an error? Does
> it render anything in the button at all? Does the
> raw HTML get rendered?
I just saw coding in the button.
> You want to make sure that the
> text doesn't get encoded - which would cause the HTML
> source to display instead. On the htmlb:button you
> will want to set the attribute encode = FALSE.
OK, that was right on spot. This shows me the Icon! Strike!
> Also I am not sure that you can also pass in text
> with the image like that. You might have to create a
> full BEE and add the image and a textView separately
> into the BEE. Then render the entire BEE to a string.
I'll check the documentation on BEE and give it a try.
Thanks for your answer.
Thats a starting point for me.
Alf -
Placed PNG images which are made in 3ds max are not shown correctly in Ilustrator
Hello,
Why placed PNG images (renders) which are made in 3ds max (and then photoshoped) are not shown correctly in Ilustrator. Images appear very noise so you can't see almost a thing. the same pictures (renders) made in Revit appear ok.
Is there a solution to solve this issue?
Thanks.You would have to provide screenshots of how it looks in PS, including the channels visible. MAX may have embedded extra channels that throw off AI. And of course check whether your PNG is actually 8bit, not 16bit.
Mylenium -
PNG images revive deleted images in the form of a thumbnail, potential risk
Saving a PNG image will revive deleted photos. To replicate this, save a PNG image, such as the ones on XKCD's "What If?", and deleted images get revived in the form of a thumbnail overlapping the image.
This has been here since IOS 5, according to http://appleinsider.com/articles/13/11/14/bug-resurrects-deleted-image-thumbnail s-in-ios-7-photos-app-dates-back-to-ios-5
Knowledge of this could be abused. If I get free acess to someone else's Ipad, I can just spam saving PNG images over and over to see their sensitive images saved as a thumbnail overlapping the PNG image's thumbnail.
How do I delete the thumbnails? It seems that when you delete a photo, it saves the thumbnail. This is supported by the PNG images reviving deleted photos in the form of thumbnails.Send feedback/suggestions to Apple.
http://www.apple.com/feedback/ipad.html
Submitting Feedback to Apple
https://sites.google.com/site/appleclubfhs/support/advice-and-articles/submittin g-feedback-to-apple
File an Apple Bug Report, at http://bugreport.apple.com/
Cheers, Tom -
Safari on iphone won't render cgi generated png images with query strings
I've got a cgi app functioning as a web service that generates png images and serves them up as part of another app which marshals them up in HTML.
Here's the image stand alone:
http://cybre.net/maps/mapgen.pl.png?WIDTH=1024&HEIGHT=768
and here's how I marshal it:
<IMG CONTENTTYPE='image/png' SRC='http://cybre.net/maps/mapgen.pl.png?WIDTH=1024&HEIGHT=768'>
It seems to work on firefox, epiphany and galeon web browsers for linux, and my windows friends say that internet explorer renders them okay as well.
My only apple hardware is my iphone, and safari pretends that there is no content when it renders the HTML page. Safari on the iphone does not render even using a direct link.
The png is generated by perl mapscript, $img = $map->draw;
print "content-type: image/png\n\n";
$img->write;
close(STDOUT)
On the previous version of the iphone firmware, and before i factored the image generation out into a web service, the iphone was able to render the png image successfully.
Is this safari wierdness where it gets cranky that there is
QUERY_STRING info after the .png? mapgen.pl.png?foo=bar ?
If so, are other browsers just being hyper liberal in what they accept and safari is playing by the rules or is this a bug in safari?
thanks in advance,
-marcit turns out that safari's handling of png is broken, the problem reproduced on both iphone and mac safaris.
in changing the format to gif, it all works okay.
does apple allow mortals to file bugs against safari? -
Files with .png images create huge .pdf's
I use .png images in PowerPoint presentations and these seem to create huge .pdf files. (...don't have this problem using .jpg images) For example, I have a 48 slide presentation that has a small .png image in the "slide master" so it will show up on every page. The PowerPoint file is 2.3MB, however the .pdf of it is 33.3MB, making it WAY too big to email, which was my objective.
Any ideas on how to reduce the size of .pdf's which contain .png images?
...note that I "compressed" the .png images inside of PowerPoint prior to creating the .pdf, but this made no impact.
Thanks,
pm>I have a 48 slide presentation that has a small .png image in the "slide
>master" so it will show up on every page.
PowerPoint only has to store one instance of the image even thought it is
displayed on multiple slides. But Acrobat can't do the same, the image has
to be stored for every page that it appears on, so that would explain the
larger file size.
Acrobat is supposed to be able to optimize the storage of common background
images (at least that's the message I see when I do a "Save as..."), but I
have yet to see it to work. Maybe it depends on the application the orginal
file is created in and the PDF conversion method used.
Adding the image into a PDF file later as a watermark instead may be a way
to keep the size down (then it really only does store the object once),
though I believe that watermark images will appear in front of everything
else on the page (not sure if that's a problem for you, it depends on
whether any text or objects in the presentation ever appear in front of the
image).
What are the dimensions and resolution of the image in PowerPoint? You may
be able to go as low as 75 dpi and not notice a difference, it depends on
whether the image contains any areas of high contrast or text. -
Firefox asks what to do with some PNG images instead of just displaying them
Not sure what is going on here, but some PNG images seem to confuse Firefox, while others are fine. While some PNGs just display when clicked on (eg: when wanting to see a full size image from a thumbnail), others make Firefox ask what I want to do with it. When I select "Firefox 3.6.8" it ends with an error:
/tmp/elementary_gtk_theme_by_DanRabbit-1.png could not be opened, because an unknown error occurred.
Try saving to disk first and then opening the file.
... but when I manually made it open with "/usr/bin/firefox" (I'm in Ubuntu) the image opens fine. I was beginning to think this was now universal for PNGs, but I was opening offending ones from the same site, and going elsewhere showed that some PNGs will be displayed as usual. Does anyone have any idea why this would happen to some PNGs but not all? Here is a link to one of the problem PNGs:
http://s.linux-mag.com/i/articles/7811/elementary_gtk_theme_by_DanRabbit.png
It opens without issue in Opera. Hope someone can make sense of this. CheersYou can look at this extension:
*Open in Browser: https://addons.mozilla.org/firefox/addon/8207
Maybe you are looking for
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