Stray, random inappropriate pixels appear in images; no such problem in Int Explorer

Viewing images in, for example, Flickr photo streams, stray, random inappropriate pixels appear in images. Reload, the pixels change locations, usually close to the original misbegotten pixels' location. Sometimes multiple patches of wrongly displayed pixels, sometimes a single patch. No such anomaly appears under the same circumstances in Internet Explorer.

Thank you for your response. I'm not a person who can control much beyond the on-off switch on the computer. I'm pretty certain it's not a matter of physical heat. I have never seen the stray pixels in Photo Shop, which sometimes works the card pretty hard, I think. It's just viewers inside browsers and in the computer, Windows' native image viewer. Thanks again.

Similar Messages

Just updated to 6.0 and I'm noticing random white pixels on black images.

Just updated to 6.0 and I'm noticing random white pixels on black images. It's not my monitor since this doesn't happen to any other browsers. It might also be a plugin.

Clear Cookies & Cache
* https://support.mozilla.com/en-US/kb/Template:clearCookiesCache
Clear the Network Cache
* https://support.mozilla.com/en-US/kb/How%20to%20clear%20the%20cache#w_clear-the-cache
Troubleshooting extensions and themes
* https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes
Update All your Firefox Plugins
* https://www-trunk.stage.mozilla.com/en-US/plugincheck/
* http://www.mozilla.com/en-US/plugincheck/
Troubleshooting plugins
* https://support.mozilla.com/en-US/kb/Troubleshooting%20plugins
Check and tell if its working.

There are randomly coloured pixels appearing on my MacBook Pro LED when I attempt to open or preview a media file. Is this the graphics card?

I recently had to switch out the hard drive on my Early 2011 13" MacBook Pro. When I got the computer back from the Apple Store I began loading my old content onto the machine. When previewing and opening files, they would appear with randomly coloured splotches of pixels on them. This continues to happen when browsing folders on my machine.
The files do not show up with splotches on other computers, and are not in the same places each time I open the file, which leads me to believe they are problems with my machine and not the files themselves.
I hypothesise this is the graphics card, but I don't know enough about the hardware to know for sure. Any help would be greatly appreciated.
See examples below.

To follow-up. The problem has gotten worse, as it not only displays glitches during file previews, but imprints glitches on exported files. No good.
There are many issues popping up now related to 15" and 17" MacBook Pros from 2011, and I wonder if this is a related issue. In either case, I would love a response from someone at Apple about this issue.
See possibly related issue here:
2011 MacBook Pro and Discrete Graphics Card
And some updated screenshots of exported files:

RANDOM 'DEAD' PIXELS CONSTANTLY CHANGING ... ?

I first noticed this on starting up my new iMac from the box ...... I thought I had 'hundreds' on random dead pixels .......
It disappeared, so I thought it was jusr 'the screen warming up'
Since then it happens randomly .. some times the pixels move, like when I take a screen shot of them ... I can also take a screen shot of a plain blue screen and as I draw a box to take the screen shot, the random black pixels appear, even though there was non actually there beforehand .....
Often they appear on 'wake from sleep', sometimes like this morning on booting from cold .. but ONLY on new 'white' Mail windows, not the plain blue background of the Mac ..
I guess it must be a video issue ?

Sounds like a hardware issue to me. Since it had this problem right out of the box, you should contact Apple ASAP for service or replacement. (The latter will only be an option, I would bet, if you bought it recently, not if you've been sitting on this problem for a while.)

There are grey pixels appearing randomly in my toolbar.

I keep getting grey boxes/pixels appearing randomly in the right side of my Firefox toolbar. I have tried changing themes, getting rid of all add-ons, etc, but they still appear.

Hello sleepyjackthefiredrill, any luck if you disable graphics hardware acceleration ?
You might need to restart Firefox in order for this to take effect, so save all work first (e.g., mail you are composing, online documents you're editing, etc.).
Then perform these steps:
*Click the orange Firefox button at the top left, then select the "Options" button, or, if there is no Firefox button at the top, go to Tools > Options.
*In the Firefox options window click the ''Advanced'' tab, then select "General".
*In the settings list, you should find the ''Use hardware acceleration when available'' checkbox. Uncheck this checkbox.
*Now, restart Firefox and see if the problems persist.
Additionally, please check for updates for your graphics driver by following the steps mentioned in the following Knowledge base articles:
* [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]]
* [[Upgrade your graphics drivers to use hardware acceleration and WebGL]]
if you try the above, and the problem persist in order to better assist you with your issue please provide us with a screenshot. If you need help to create a screenshot, please see [[How do I create a screenshot of my problem?]]
Once you've done this, attach the saved screenshot file to your forum post by clicking the '''Browse...''' button below the ''Post your reply'' box. This will help us to visualize the problem.
Thank you!

T510 Random Stuck Pixels?

I received my T510 FHD Thinkpad about a month ago and over the last few days it started to display random stuck pixels (always on - white). I say random because they eventually go away when I open and close windows or reboot the computer. Mysteriously reappearing later at random (not in the same spots if I recall correctly)???
After doing some internet research, I ran JScreenFix (http://www.jscreenfix.com/) for about an hour on full screen. The problem persists.
My son suggested this could be a driver issue (supported by the fact that the pixel becomes "unstuck" when shutting down Windows XP and doesn't appear until Windows finishes booting up). I am using the most recent Nvidia drivers so I'm hoping this is not isolated.
Any help/suggestions would be greatly appreciate.
Thanks,
Stephen

Update
This is apparently an issue exclusive to Windows XP. I used a separate HD and installed Windows 7 - no temporarily stuck pixels.
Have to assume this is a driver issue. Hopefully, Lenovo/Nvidia will release a fix soon.
Any other ideas/fixes would be appreciated.
Thanks.

Random red pixels on my macbook display

i've had this macbook for 3 days, and as soon as i started using it, red flickering pixels appeared.
there not stuck on the screen, just over some dark colours, so you can scroll and they move with the image.
I am worried i might have to send it back,
anyone know if and how i can fix this?

i'm having the same problem. except mine is almost two years old now. It's especially noticeable on text.
my dots vary in colour - black and white mainly.

Looking for the brighter red pixel of an image

Hi, I need to find the brighter red pixel of an image. I tried this code, but the value of each pixel seemed to be the same (zero).
public static void findBrighterRedPoint(Image i, ImageObserver o){
     int redMax = 0; //0 to 255
     int xMax = 0;
     int yMax = 0;
     PixelGrabber pg = new PixelGrabber(i,0,0,i.getWidth(o),i.getHeight(o),true);
     ColorModel cm = pg.getColorModel();
     for(int a=0;a<pg.getHeight();a++){
          for(int c=0;c<pg.getWidth();c++){
               if(cm.getRed(((a-1)*pg.getWidth()+c)) > redMax){
                    redMax = cm.getRed(((a-1)*pg.getWidth()+c));
                    xMax=c;
                    yMax=a;
               if(f==(pg.getHeight()-1) && c==(pg.getWidth()-1)){
               System.out.println("Red bound max value: "+cm.getRed(((a-1)*pg.getWidth()+c))+" Arrow: "+a+" Collumn: "+c);
}//method endThanks for some help...
Edited by: juanma268 on Jul 25, 2008 5:45 PM

import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.swing.*;
public class LookingForRed extends MouseMotionAdapter {
    JLabel red, green, blue;
    BufferedImage image;
    public void mouseMoved(MouseEvent e) {
        Point p = e.getPoint();
        int rgb = image.getRGB(p.x, p.y);
        red.setText(String.valueOf( (rgb >> 16)&0xff));
        green.setText(String.valueOf((rgb >> 8)&0xff));
        blue.setText(String.valueOf( (rgb >> 0)&0xff));
    public static void findBrighterRedPoint(Image i, ImageObserver o){
        int redMax = 0; //0 to 255
        int xMax = 0;
        int yMax = 0;
        int w = i.getWidth(o);
        int h = i.getHeight(o);
        int[] pixels = new int[w*h];
        PixelGrabber pg = new PixelGrabber(i,0,0,w,h,pixels,0,w);
        try {
            pg.grabPixels();
        } catch(InterruptedException e) {
            System.out.println("interrupt");
        ColorModel cm = pg.getColorModel();
        for(int a=0;a<pg.getHeight();a++){
            for(int c=0;c<pg.getWidth();c++){
                int index = a*pg.getWidth()+c;
                int pixel = pixels[index];
                if(cm.getRed(pixel) > redMax){
                    redMax = cm.getRed(pixel);
                    xMax=c;
                    yMax=a;
                if(a==(pg.getHeight()-1) && c==(pg.getWidth()-1)){
                    System.out.println("Red bound max value: "+redMax+
                               " Arrow: "+yMax+" Collumn: "+xMax);
    private void showGUI(BufferedImage image) {
        this.image = image;
        ImageIcon icon = new ImageIcon(image);
        JLabel label = new JLabel(icon, JLabel.CENTER);
        label.addMouseMotionListener(this);
        JPanel panel = new JPanel(new GridBagLayout());
        panel.add(label, new GridBagConstraints());
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.add(panel);
        f.add(getLabelPanel(), "Last");
        f.setSize(300,300);
        f.setLocation(200,200);
        f.setVisible(true);
        findBrighterRedPoint(image, label);
    private JPanel getLabelPanel() {
        red = new JLabel();
        green = new JLabel();
        blue = new JLabel();
        Dimension d = new Dimension(45, 25);
        JPanel panel = new JPanel(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.insets = new Insets(2,2,2,2);
        gbc.weightx = 1.0;
        addComponents("r =", red,   panel, gbc, d);
        addComponents("g =", green, panel, gbc, d);
        addComponents("b =", blue, panel, gbc, d);
        return panel;
    private void addComponents(String s, JLabel jl, Container c,
                               GridBagConstraints gbc, Dimension d) {
        gbc.anchor = GridBagConstraints.EAST;
        c.add(new JLabel(s), gbc);
        jl.setPreferredSize(d);
        gbc.anchor = GridBagConstraints.WEST;
        c.add(jl, gbc);
    public static void main(String[] args) {
        LookingForRed test = new LookingForRed();
        BufferedImage image = test.makeImage();
        test.showGUI(image);
    private BufferedImage makeImage() {
        int w = 200, h = 200;
        int type = BufferedImage.TYPE_INT_RGB;
        BufferedImage image = new BufferedImage(w, h, type);
        int[] data = new int[w*h];
        int x = 3*w/4;
        int y = 3*h/4;
        System.out.println("Max red value should appear at " +
                           "x = " + x + " y = " + y);
        int a = 255;
        for(int j = 0; j < h; j++) {
            int b = j*255/(h-1);
            for(int k = 0; k < w; k++) {
                int r = (j == y && k == x) ? 255 : 127;
                int g = k*255/(w-1);
                data[j*w + k] = ((a & 0xff) << 24) |
                                ((r & 0xff) << 16) |
                                ((g & 0xff) << 8) |
                                ((b & 0xff) << 0);
        image.setRGB(0,0,w,h,data,0,w);
        return image;
}

Randomly Generated Pixels

Hi!
I want to create a script that creates random (or near random) values for every single pixel of a document, similar to the "Add Noise..." filter, but with more control, such as "only b/w", "only grey", "all RGB" and "all RGB with alpha" and maybe even control over the probability distribution. Any idea how this could be tackled? Selecting every single pixel and applying a random color seems like something that would take a script hours...
Why do I need this?
I've started creating some filters in Pixel Bender (http://en.wikipedia.org/wiki/Adobe_Pixel_Bender). Since Pixel Bender doesn't really have any random generator (and workarounds are limited) I'm planning on passing on the random numbers through random pixel values. I'm well aware that this can only be used for filters in which Pixel Bender creates images from scratch, but that's the plan.
Thanks!

Understanding the details of the Add Noise filter is probably beyond the scope of just a short post. Here is an approach to start learning what it does.
- Take a 50% gray level and make it a Smart Object.
- Open up the historgram panel (should show a spike right at 50%)
- Apply noise filter to Smart Object in monochrome building up from small percentages in small increments
- You will notice that for this option above, you end up with a uniform probability function over the entire tonality spread at 50% applied for uniform distribution.
There are a variety of ways to manipulate this function, through various blends.
Please note a couple things
1) I am using CS5 and though not documented anywhere that I have seen, the Noise Filter does work different than in CS4. In CS4, if you run the same noise filter twice on two identical objects, my experience is that you get the identical bit for bit result ( a random pattern yet not independent of the next run of the filter). Manipulating Probability Density Functions (PDFs) per my previous post requires that each run of the Noise Filter starts with a different "seed" so that the result is independent of the previous run. CS5 does this where succesive runs will create an independent noise result.
2) PS does not equally randomize R, G, and B. There are ways to get around this yet wanted to give you a heads up.
3) There are other ways to generate quick random patterns outside of PS and bring them in (using scripts). You would need to understand the format of the Photoshop Raw file. This type of file contains bytes with just the image pixel data. These types of files are easy to create and then load into PS. From a script (or even faster call a Python script) create this file and then load it into PS as a Photoshop Raw format file and use as an overlay. There is not question that this is faster than trying to manipulate individual PS pixesl through a script.
4) Please not the under Color Settings there is an option called Dither. If this is set, there are times where PS adds nosie into the image (I leave mine turned off). If is used in a number of places in PS other than what the documentation implies (more than just when moving between 8 bit color spaces)
Good luck if you are going after making a plug-in. I have never invested in that learning curve. Good luck.

White pixels appear on dark areas on rMBP

Since 10-12-12 there suddenly appeared small, single pixel, white dots on web pages and other applications with darker areas. Many of the dots come in pairs and move with the image, ruling out display problem.
I took into the Apple store and the tech determinded that it was an OS problem and suggested I reinstall the OS. To come to this conclusion the tech ran several tests including screen display and external OS tests.
After I installed a new OS, the problem persisted. The next step was to call AppleCare and see what else could be done. They suggested a completer erase and clean install of the OS... no better.
I was able to restore to a backup post pixel problem and now waiting on a solution. Anyone else...?

Blue Pixels appearing? hmmm, not good---take a look and see how many and if it is distracting -- there are pixel pix programs you can try and use, however, LCD screens are know for a dead pixel here and there. Whats weird is that the pixels are blue? Usually when a pixel dies, its colorless. If you are getting a great deal on the PB (as in real cheap) and the lixel issue isnt to bad -- then take a shot at it. You always get what you pay for.
Check these out bud...
A "How To" Guide on fixing a stuck pixel manually--- http://www.macinstruct.com/node/52
Fix a pixel program -- http://www.apple.com/downloads/dashboard/status/pixelfix.html
GOOD LUCK!!!
Christian

Dead pixels appeared on Macbook Pro Retina 15"

Hi,
Bought my Macbook on September / 2014 and so far no problems.
Unfortunately today a lot of dead pixels appeared on the center of my screen !
I tried to clean it but it seems to be behind the screen actually. Tried to reboot and reset SMC as request by Apple support, with no success : (
They suggested i bring it to the nearest service center, problem is i use my machine to work and it probably will take weeks to repair.
Is there any other solution ? Why this happened ? My previous Macbook was not Retina and never had this kind of issue.
I took a photo of the screens while in the google website :
Very disappointed

A 15 ft display boy that is big. Perhaps a smaller display with fewer pixels is in order.

How can I get to read the pixels in an image?

Please see details of my code below. What I am doing is trying to obtain the pixels for an image. there is an initial image of a certain size, which is then split into smaller portions.
The problem I'm getting is that pixels can not be read past the middle of the original image. I hope I have explained this so it can be understood. I have included the class that I am working on
* To change this template, choose Tools | Templates
* and open the template in the editor.
package MandelbrotConstruction.compression;
import java.awt.*;
import java.awt.color.ColorSpace;
import java.awt.geom.AffineTransform;
import java.awt.image.*;
import java.io.*;
import java.util.ArrayList;
import javax.imageio.ImageIO;
import javax.swing.JPanel;
* @author Charlene Hunter
public class DisplayImg extends JPanel {
    private static BufferedImage image;
    private static ArrayList<Range> rangeLot;
    private static ArrayList<Domain> domainLot;
    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        int w = MainFrame.getJPanel1().getWidth();
        int h = MainFrame.getJPanel1().getHeight();
        Graphics2D g2 = (Graphics2D) g;
        File img = MainFrame.getImgFile();
        image = null;
        if (img != null) {
            try {
                image = ImageIO.read(img);
                //filter the image with a grayscale
                ColorConvertOp grayOp = new ColorConvertOp(ColorSpace.getInstance(ColorSpace.CS_GRAY), null);
                image = grayOp.filter(image, null);
                //scale image to the size of the panel
                AffineTransform at = new AffineTransform();
                at.scale(256.0 / image.getWidth(), 256.0 / image.getHeight());
                AffineTransformOp resizeOp = new AffineTransformOp(at, null);
                image = resizeOp.filter(image, null);
                ArrayList<Range> r = createRanges(image, 3);
                ArrayList<Domain> d = createDomains(image);
                int i = 0;
                for (Domain dom : d) {
                    System.err.println("this is " + i);
                    System.out.println(dom.getPixels());
                    i++;
                CompareClass comparer = new CompareClass(r, d);
            } catch (IOException e) {
                System.err.println("IOException");
        g2.drawImage(image, null, 0, 0);
    public static ArrayList<Range> createRanges(BufferedImage bi, int divisions) {
        int w = bi.getWidth();
        int h = bi.getHeight();
        rangeLot = new ArrayList<Range>();
        int k = (int) Math.pow(2, divisions);
        for (int x = 0; x < w; x = x + (w / k)) {
            for (int y = 0; y < h; y = y + (h / k)) {
                BufferedImage range = bi.getSubimage(x, y, w / k, h / k);
                double[] pix = range.getRaster().getPixels(x, y, range.getWidth(), range.getHeight(), (double[]) null);
                Range r = new Range(x, y, range, pix);
                rangeLot.add(r);
        return rangeLot;
    public static ArrayList<Domain> createDomains(BufferedImage bi) {
        int w = bi.getWidth();
        int h = bi.getHeight();
        domainLot = new ArrayList<Domain>();
        int step = 4;
        for (int x = 0; x < w - step; x = x + step) {
            for (int y = 0; y < h - step; y = y + step) {
                BufferedImage domain = bi.getSubimage(x, y, 2 * step, 2 * step);
                double[] pix = domain.getRaster().getPixels(x, y, domain.getWidth(), domain.getHeight(), (double[]) null);
                Domain d = new Domain(x, y, domain, pix);
                domainLot.add(d);
        return domainLot;
}If what I have included is not sufficient, please let me know. the problem is only arising when the pixels are being obtained for the subimage
Thanks

Hi, the error message I am getting is (i'm printing out the x,y values and width and height so that I can see what going on) the whole image is 512x512, and I am grabbing pixels for squares of 64x64, but when it gets to 256 it throws an exception. I don'd understand why
(x: 0, y: 0)
width: 64, height: 64
done!
(x: 0, y: 64)
width: 64, height: 64
done!
(x: 0, y: 128)
width: 64, height: 64
done!
(x: 0, y: 192)
width: 64, height: 64
done!
(x: 0, y: 256)
width: 64, height: 64
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: Coordinate out of bounds!
        at java.awt.image.ComponentSampleModel.getSampleDouble(ComponentSampleModel.java:807)
        at java.awt.image.SampleModel.getPixels(SampleModel.java:823)
        at java.awt.image.Raster.getPixels(Raster.java:1613)
        at MandelbrotConstruction.compression.DisplayImg.createRanges(DisplayImg.java:83)
        at MandelbrotConstruction.compression.DisplayImg.paintComponent(DisplayImg.java:51)
        at javax.swing.JComponent.paint(JComponent.java:1006)
        at javax.swing.JComponent.paintChildren(JComponent.java:843)
        at javax.swing.JComponent.paint(JComponent.java:1015)
        at javax.swing.JComponent.paintChildren(JComponent.java:843)
        at javax.swing.JComponent.paint(JComponent.java:1015)
        at javax.swing.JLayeredPane.paint(JLayeredPane.java:559)
        at javax.swing.JComponent.paintChildren(JComponent.java:843)
        at javax.swing.JComponent.paintWithOffscreenBuffer(JComponent.java:4979)
        at javax.swing.JComponent.paintDoubleBuffered(JComponent.java:4925)
        at javax.swing.JComponent.paint(JComponent.java:996)
        at java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:21)
        at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:60)
        at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:97)
        at java.awt.Container.paint(Container.java:1709)
        at sun.awt.RepaintArea.paintComponent(RepaintArea.java:248)
        at sun.awt.RepaintArea.paint(RepaintArea.java:224)
        at sun.awt.windows.WComponentPeer.handleEvent(WComponentPeer.java:254)
        at java.awt.Component.dispatchEventImpl(Component.java:4060)
        at java.awt.Container.dispatchEventImpl(Container.java:2024)
        at java.awt.Window.dispatchEventImpl(Window.java:1791)
        at java.awt.Component.dispatchEvent(Component.java:3819)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

How do i get a placed image to appear as image inside a layer?

There is a long winded reason why I want this, but in essence I am trying to replicate another artwork that has been supplied to me.
When I place a Photoshop image (TIFF / PSD etc) how can I get it so that it simply appears as <image> inside the relevant layer (screen shot attached)
I am finding that when I place an image I do not get this

That's what I had assumed. It just doesn't seem to be working for me. You don't think there is a Preference setting that might disable it?

Star Rating bar does not appear with images imported from file

Using Elements 11, cannot get the Star Rating bar to appear under images imported from file, although the intro to the program shows this as happening automatically.
Hope this goes through, as I have also created an account, but the question does not seem to be get a post.
Help!

Have you enabled Organizer to show details? You can enable show details by checking View > Detail is not already checked

How do you reduce the pixels of an image to fit within certain requirements

I am trying to get the pixels of an image to fit certain requirements. When I try to edit the image in iPhoto by clicking custom constrain and then enter the pixel of dimensions I want, it will not adjust the image to them. Does anyone know how I can do this?

Select the pic in the iPhoto Window and go
File -> Export
in the resulting dialogue you can resize:
Uploaded with plasq's Skitch!
Regards
TD

Stray, random inappropriate pixels appear in images; no such problem in Int Explorer

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