Negative Image on Display

When I woke my Mac Pro from sleep mode, the image was negative (what would be white is black, red is green, blue is yellow, etc.). I tried rebooting, I checked the display parameters. I have it hooked up to my television monitor and that was negative as well. Is the video card toast or is something else telling the video card that black is white and white is black?

You may have inadvertently hit the keyboard combination for the white-on-black option in Universal Access. Go to System Preferences - Universal Access, and make sure Display reads "Black on White".
Matt

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In my Macbook Pro, on a few occassions, the apple menu bar blacks out. its displayed as a negative image. The desktop wallpaper get greyed out and i get a blank screen as wallpaper. No idea why this happens. I reset the system and issue gets resolved.

In my Macbook Pro, on a few occassions, the apple menu bar blacks out. its displayed as a negative image. The desktop wallpaper get greyed out and i get a blank screen as wallpaper. No idea why this happens. I reset the system and issue gets resolved.

AshwinVC wrote:
I reset the system and issue gets resolved.
How?

Screen displaying negative image

My 3 year old was hitting buttons on my laptop, I walked over to remove him and my screen is a complete negative image of what is being displayed. I am sure it was just a combination of buttons hit but I have no idea how to revert it. Anyone??? Anyone???? Tried looking under system preferences but nothing... have no idea how to fix.

I did a little searching. for anyone else who encounters the problem hit Control, Option, Command, then 8. it will switch it back to normal.

I have an iPad two and recently the display is showing as a negative image. How would I correct this?

I have an iPad 2 and recently my display is showing as a negative image. How do I correct this?

Try triple clicking the home button
Go to Settings > General > Accessibility > White on Black OFF

HT201412 I updated my iPad and shortly afterwards my display has changed to what looks like negative image colorization. Has something gone out on the display or have I unintentionally triggered a weird display setting?

I updated my iPad and shortly afterwards my display changed to what looks like negative image colorization. Has something gone out on the display or have I unintentionally triggered a weird display setting?

Settings --> General --> Accessibility --> Invert Colours
is the setting you might have changed.

One page displays as negative image when saving PDF to reduced size in Preview

Imac Intel Mid 2007
OS X 10.5.8
Preview v4.2
I have a multi-page PDF I'm trying to save to a reduced size.
The document was constructed of separate pages, some of which were created as Photoshop PDFs in Photoshop CS4 and others were saved as PDF's from Word. After moving over the individual PDF's to the side bar, the document saves fine in Preview at full size. When I use the quartz filter to "Save As" "Reduced File Size" one page saves as a negative image and the others are all fine.
One suggestion I saw in a similar thread was that the mode in PS might be CMYK, however it is not and it is RGB.
Any help as to solving this would be greatly appreciated.

n.gilbert wrote:
If I select all pages 'save as' will only save out one page and not all.
JPEG is single-page.
If I print and choose 'pdf to jpeg'
Elaborate, please.
Is there a way to save to pages out in one go to jpeg where I can adjust the dpi setting?
Yes. Build an Automator workflow using the PDFs > Render PDF Pages as Images action.
Once I have the reduced jpegs it's easy enough to reimport into preview and save as a pdf.
If the desired final output is multi-page PDF, no need to go through all that. You can do the task in Acrobat Pro (PDF Optimizer), or in Preview (Save as > PDF > Quartz Filter). If the current Reduce File Size filter doesn't provide satisfactory quality, use ColorSync Utility to duplicate it (or make a new filter from scratch) and adjust it to fit your needs.

CC Image wipe starts with ghost/negative image from previous image

I have several images wiping onto a screen side by side, one after the other. However after the first image appears, the ghost of that image appears as I start each following wipe. This happens continually throughout all subsequent images.
Here's an image of the weirdness.
You can see that the third image on the right is displaying the ghost/negative image of the first image in the sequence. it apears initially then disappears and the wipe completes normally.
Maybe the church image is haunted... I don't know.
Help anyone?

This is the effects panel of the church image.
This is the next image to wipe on, and is also the next layer up on the timeline.
Thanks for the help!

Negative image

Somehow my son inadvertently set our iMac display to a 'negative' image by simply hitting keys on the keyboard, he never went into any control panel or adjusted any settings. I have no idea how to reverse this so we can see the normal 'positive' image again. Does anyone have any ideas? Thanks

I feel your son must have used a key combination that activates the "White on Black" Universal Access feature.
To restore the normal screen view, go to Preferences in the dock, select Universal Access, and click the Black on White radio button from the Display section of the Seeing tab.
Alessandro

My screen is now a black and white negative image - can I reverse it to col

After 3 small children were near my computer - it was turned on , the screen is now black and white like a negative image, when starting up the initial checks of firewall etc are displayed on the normal colour screen then as soon as the start up is over it goes to Black and white. I have been through the settings on the computer but can not find any changes that have occured - I suspect the 3 toddlers have pressed everything at once
Can anyone tell me how I can get the colour back?

Open the Universal Access pane of System Preferences
and turn off the White on Black option under Seeing,
as well as any other options which may have been
inadvertently turned on or changed, such as the
contrast.
(12735)
Thank you very much - problem solved in 10 seconds flat
Peter

Problem with animated gif image getting displayed

My problem is that my animated image does not get displayed properly. I am extending JButton and the button already contains a static image. I want to display the animated image over the static one for some reason. If I replace the animated image with a static gif, then there is no problem.
Here is the code that I am using
Icon anim = new ImageIcon((new ImageLoader()).getImage("/graphics/busy.gif"));
// thread to call displayAnim method
class ColorThread extends Thread {
ColorThread() {
public void run() {
while (AnimFlag) {
try {
displayAnim();
Thread.sleep(400);
} catch (InterruptedException e) {
public void displayAnim()
repaint();
public void paint(Graphics g)
super.paint(g);
int x=5;
int y=0;
if ( AnimFlag) {
anim.paintIcon(this,g,x,y);

This code is working fine for JRE 1.2 and the animation is displayed. The problem is with JRE 1.3. when there is no animation, neither is there any image getting displayed.

OBIEE 10G Embedded Image not displayed on PDF

Hi
We have some embedded images (source on network share or on the webserver) on a dashboard. On the screen the images are displayed without problems.
But if we want to print the dashboard (f.e. PDF) the images are not printed. In html-view the images would be displayed.
Is there a known bug that images can't be printed on dashboard pages or do we have to embed them different?
Thank you

Hi Team,
I do face the same issue of image not displayed in only pdf output format. Our client has deployed OBIEE 10.1.3.4.1 using Weblogic application server and is accesible through a secured url access.
I have followed the fmap syntax to locate the image, also made sure the image is getting accessed through url, tried with different images of different sizes . In all cases the image display is appearing fine in HTML & Excel output. But not getting displayed only for pdf output.
Can you please help me with this regard if am missing any specific setup for pdf output. Is there is any pointers or documentation available to get around this issue.
Thanks in advance.

OBIEE 11G Embedded Image not displayed on PDF

Hi
I have some embedded images on a dashboard. On the screen the images are displayed without problems.
But if we want to print the dashboard (f.e. PDF) the images are not printed. In html-view the images would be displayed.
All the images are referenced with the fmap path.
Any way to print the images in the pdf ?
Thank you
obiee 11.1.1.5
O.S : Oracle Linux 5.6 x64

Hi Team,
I do face the same issue of image not displayed in only pdf output format. Our client has deployed OBIEE 10.1.3.4.1 using Weblogic application server and is accesible through a secured url access.
I have followed the fmap syntax to locate the image, also made sure the image is getting accessed through url, tried with different images of different sizes . In all cases the image display is appearing fine in HTML & Excel output. But not getting displayed only for pdf output.
Can you please help me with this regard if am missing any specific setup for pdf output. Is there is any pointers or documentation available to get around this issue.
Thanks in advance.

Overriding DPI of images when displaying them in WPF

Posting following because it might help someone else. It took me quite
while to figure this one out.
I started learning C# and WPF recently. I hadn't had so much fun since the
late 1990s when I learned Java.
But I stumbled on one major irritant working on my project, a picture viewer.
Contrary to just about every environment I've encountered, WPF insists on
taking the DPI of images into consideration when displaying them. What I want
is to display the images in some area of my app, pixel-for-pixel unless that
results in the picture going beyond the frame, in which case the image
needs to be scaled down so it fits. I don't want to have a larger image because
the DPI is smaller than 96, and I don't want a smaller image because the DPI
is higher than 96.
As far as I'm concerned, DPI is more often than not a useless number. Two
examples.
1) My camera arbitrarily assigns a DPI value of 72 to all pictures it takes.
   But what "inches" are we talking about here? Obviously there is no answer
   to that question. So it's a meaningless number.
2) If I scan a 35 mm color slide, I will probably do so at a DPI value of
   something like 2400, but I'd sure want to display the resulting image much
   larger. By default, WPF will show it at original size, totally useless.
   The DPI here is certainly meaningful, but not as a display parameter!
I compared two images from same original (leware.net/photo/dpi.html),
one resized to a DPI of 48, the other to a DPI of 192. In a hex editor,
except for the one byte that encodes the DPI value, the two files are
identical. It's the same image, with a different DPI value, but no other
differences.
So how do I get a WPF picture viewer to display images without taking their
DPI into consideration? As every browser and viewer I know will do?
At first, I thought that I would be able to do something like:
    BitmapImage img = new BitmapImage();
    img.BeginInit();
        img.UriSource = new Uri(somePathOrUrl);
        img.DpiX = 96.0;   // override
        img.DpiY = 96.0;
    img.EndInit();
But DpiX and DpiY are "get" only, not "set". Yet, it's just a simple number,
and changing it before WPF does anything with the image does not sound like a
big challenge (even when waiting for DownloadCompleted event). It's almost as
if the WPF designers decided that WPI was sooo important that they would never
allow anyone to modify the value...
The first approach I tried used RenderTargetBitmap (created at 96 DPI),
DrawingVisual, DrawingContext classes. Seems quite complex. It worked, but
I wouldn't call it elegant.
After much browsing (and with improving understanding), I found a better approach.
In simple terms, I set the Image's Width and Height to PixelWidth and PixelHeight
(which essentially makes the resulting DPI to be 96), and I set the Image's
MaxWidth and MaxHeight to the space available to the Image in the app, to force
scaling if the source is too large. I used Stretch=Uniform. Code fragments below.
The Image is placed in a UniformGrid container which provides the MaxWidth and
MaxHeight, and which centers the Image inside.
This approach is quite a bit more elegant, it removed nearly 100 lines of code
from the app. I still think though that it's not as simple as it could be.
I had also read about "DPI awareness", didn't really understand it, but it seems
to deal with DPI of display device, not of source images.
So two questions:
1) Is there a even easier way, esp. a way to directly modify or ignore an image's
   DPI values before using it (without copying the image into some new bitmap)?
2) Barring that, is there something simpler than above?
Note that I'm fine with the application being otherwise DPI aware (fonts,
buttons, &c).
Thanks
WPF code fragments of the trivial application I used to fine-tune the second
approach. The two images are 160x100 pixels (but any pair of images smaller
than the display will do the trick), one at DPI 48, one at DPI 192, and named
IMG_6726s48.jpg and IMG_6726s192.jpg. The both show at the same size, as I
wanted.
To see the original problem as I experienced it, set Stretch=None and comment
out the two pairs of lines that set image.Width and image.Height.
XAML
<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="512" Width="512">
    <Grid>
        <TextBlock Name="lpvMessage" Text="(messages)" Margin="2,2,10,0" VerticalAlignment="Top" TextWrapping="NoWrap"/>
        <UniformGrid Name="grid" Margin="48,48,16,16" Background="LightGray" SizeChanged="gridSizeChanges">
            <Image Name="image" Stretch="Uniform" HorizontalAlignment="Center" VerticalAlignment="Center" MouseDown="onClickInImage"/>
        </UniformGrid>
        <Button Content="48" HorizontalAlignment="Left" Margin="10,68,0,0" VerticalAlignment="Top" Width="32" Click="buttonClick"/>
        <Button Content="192" HorizontalAlignment="Left" Margin="11,93,0,0" VerticalAlignment="Top" Width="32" Click="buttonClick"/>
    </Grid>
</Window>
XAML.CS
namespace WpfApplication1
    public partial class MainWindow : Window
        public MainWindow()
            InitializeComponent();
            grid.Background = new SolidColorBrush(Color.FromArgb(0xFF, 0xF0, 0xF0, 0xF0)); // shows grid for testing
            changeImage("48");
        private void changeImage(string dpi)
            BitmapImage img = new BitmapImage();
            img.BeginInit();
            img.UriSource = new Uri("R:/IMG_6726s" + dpi + ".jpg"); // IMG_6726s48.jpg or IMG_6726s192.jpg.
            img.EndInit();
            image.Source = img;
            lpvMessage.Text = "Loading :/IMG_6726s" + dpi + ".jpg";
        private void onClickInImage(object sender, MouseButtonEventArgs e)
            BitmapImage isrc = image.Source as BitmapImage;
            image.Width = isrc.PixelWidth;       // "ignores" DPI
            image.Height = isrc.PixelHeight;
            image.MaxWidth = grid.ActualWidth;   // prevents scaling larger than 1:1
            image.MaxHeight = grid.ActualHeight;
            bool shifted = Keyboard.IsKeyDown(Key.LeftShift) || Keyboard.IsKeyDown(Key.RightShift);
            if (shifted) // shift-click to toggle Stretch between Uniform and None
                if (image.Stretch == Stretch.None)    image.Stretch = Stretch.Uniform;
                else
image.Stretch = Stretch.None;
            lpvMessage.Text = "grid.ActualSize=" + grid.ActualWidth + "x" + grid.ActualHeight +
                " image.ActualSize=" + image.ActualWidth + "x" + image.ActualHeight +
                " isrc.PixelSize=" + isrc.PixelWidth + "x" + isrc.PixelHeight +
                " image.Stretch->" + ((image.Stretch == Stretch.None) ? "None" : "Uniform");
        private void gridSizeChanges(object sender, SizeChangedEventArgs e)
            BitmapImage isrc = image.Source as BitmapImage;
            image.Width = isrc.PixelWidth;       // "ignores" DPI (redundant here
            image.Height = isrc.PixelHeight;
            image.MaxWidth = grid.ActualWidth;   // prevents scaling to larger than 1:1
            image.MaxHeight = grid.ActualHeight;
            lpvMessage.Text = "grid.ActualSize=" + grid.ActualWidth + "x" + grid.ActualHeight +
                " image.ActualSize=" + image.ActualWidth + "x" + image.ActualHeight +
                " isrc.PixelSize=" + isrc.PixelWidth + "x" + isrc.PixelHeight +
                " image.Stretch->" + ((image.Stretch == Stretch.None) ? "None" : "Uniform");
        private void buttonClick(object sender, RoutedEventArgs e)
            Button b = sender as Button;
            string dpi = b.Content as string;
            changeImage(dpi);

Being able to ignore DPI is all I'm asking for, and what I've always done for decades
If the objective is to fill the Window, then yes, it's simple, as the following example of a thumbnail image shows:
<Grid>
<Image Source="http://leware.net/temper/42fp.jpg"/>
</Grid>
Result below. DPI doesn't matter, pixel sizes don't matter, the source fills the Image control, while respecting the proportions.
But I don't want the image to fill the space available if it doesn't have enough pixels, it looks fuzzy and I don't like that.
So I add Stretch=None to the Image control, and it solves my problem, the image is shown at a size that corresponds to its pixel size (63x87), centered.
<Grid>
<Image Source="http://leware.net/temper/42fp.jpg" Stretch="None"/>
</Grid>
The above two XAML fragments give the following results:
The second is what I want. So Stretch=None, unless the image is larger than display area, in which case Stretch=Uniform.
Now I try my two test images, also with Stretch=None because they are smaller than display area.
These two images are both 160x100 pixels, and, when compared in a hex editor, differ
only in the couple of bytes that store the DPI value (0x0030 vs 0x00c0),
all the rest is the same.
<Grid>
<Image Source="http://leware.net/photo/IMG_6726s48.jpg" Stretch="None"/>
</Grid>
and
<Grid>
<Image Source="http://leware.net/photo/IMG_6726s192.jpg" Stretch="None"/>
</Grid>
Here's what I see:
DPI obviously does matter here, much to my surprise. WPF's behavior was unexpected. That was my original problem.
The DPI 48 image is enlarged by a factor of 2, the 192 DPI image is reduced by a factor of 2. What I want is in between, and the same for both images, a display based only on pixel sizes, like most browsers and picture viewers do.
In other words, I want one image pixel to be one display pixel, downsized to fit if the image is too large, but never enlarged beyond 1:1 to fill the available space.
I had a hard time figuring out how to get those two small images to show identically.
I finally got what I wanted with the solution at the top of this thread (overriding size of Image control instead of DPI). I'm sharing because it might help someone else.
Is there a better way to handle this when the DPI is arbitrary? Isn't there a way to just tell WPF to ignore images' DPI values or simply override it (force an image's DPI to 96)?
Quite possibly I'm trying to do something which does not quite fit in the philosophy of WPF. Maybe I'm closer now, I'm still learning (this discussion is helping).
I won't be surprised if my application misbehaves when the DPI of the display is not 96. Not a concern for now.

How do I make a 20 X 30 print with layers of 16 X 20, 12 X 18, 11 X 14, 8 X 12, 8 X 10, 5 X 7 and 4 X 6 of the same image to display the different sizes available to someone? Using Elements 13 with Windows 8.1

How do I make a 20 X 30 print with layers of 16 X 20, 12 X 18, 11 X 14, 8 X 12, 8 X 10, 5 X 7 and 4 X 6 of the same image to display the different sizes available to someone? Using Elements 13 with Windows 8.1
A senior citizen needs some help.
Thanks

Saving each image as different size - is it an option for you? I would save images with their name as: 20x30.png, 16x20.png etc etc.
Or explain whether you want these in a webpage in which case only one image is necessary and different sizes are displayed with good CSS code. this is question for Dreamweaver forum if this is what you want.

Saving a PDF as a negative image...is that possible?

I'm trying to save a PDF from Illustrator as a negative image...like in the print menu in 'Output' you can change the image to Negative.
I need to do this so I can send it to an image setter.
I looked in the help menu and briefly online but I couldn't find anything, please let me know if you know how I can do this or if it isn't possible!
Thanks!

Well...
Usually we just send an Illustrator file to the image setter and when we print it, we select the image to be negative and that works out fine.
Now we're trying to send an 11"x17" file when the setting is for 8.5"x11". We couldn't find anywhere in the manuals or help menus for the software where to change the page size on the image setter. Then we were finally able to get it to work with sending a 11"x17" PDF, but now we need it to be a negative image..
It's so frustrating!
But thanks for your help!

Negative Image on Display

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