Create an image from float array?

Dear All,
I have a float array containing pixel values. From that array I want to create an image (let's say in JPEG format).
How should I do that?
thanks

Hi musti168,
You're going through your entire image pixel-by-pixel and getting each of their values - why don't you just use the IMAQ ImageToArray function?
On this forum post I found an example of IMAQ ArrayToImage: http://forums.ni.com/t5/LabVIEW/IMAQ-arraytoimage-example/td-p/68418
You can use some of the IMAQ Image Processing palette to change the image to gray scale - possibly a threshold.
Julian R.
Applications Engineer
National Instruments

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I have created an ImageLoader that stores images loaded from the filesystem. I do however need a default image that is not reliant on loading an image from the filesystem, in case any images on the filesystem are not found.
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Hi all,
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When you used the IMAQ create VI you specified each image to use the same name of "image". Each image has to have a unique name. I edited your VI to give a unique name for each image and I was able to view three different images in three different viewing panes.
Attachments:
Image Array Reworked.vi ‏19 KB

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Hi,
I'd like to create the application that create the transparency image from drawing data. the code is as follows.
BufferedImage img = new BufferedImage(350,350,BufferedImage.TYPE_INT_RGB);
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1. use a PixelGrabber to convert the image into a pixel array
2. (assuming pixel array called pixelArray) :
if (pixelArray[loopCounter] == 0xFFFFFFFF) { //assuming the black your seeing is not a fully transparent surface
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Here's a sample class that utilizes these techniques:
* To start the process, click on the window
* Restriction (next version upgrade) :
*     - firstImage must be larger
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.swing.*;
public class AdditiveBlendingTest extends javax.swing.JFrame implements MouseListener, ActionListener, WindowListener {
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    private int clipY = 400;
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    private int [] secondImageArray;
    private int [] finalImageArray;
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          System.out.println("Image2.gif Load error");
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    public void windowIconified (WindowEvent e) {}
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Creating an image from a Mac and restoring it in another Mac

Hi,
I've spent a couple of hours trying to make a copy of one of my macminis, trying to copy it in another macmini to have the SAME machine "duplicated".
I've read some tutorials online, but something is going wrong....
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Hi sr.richie;
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How to create an image from another one with midp1.0 as in midp 2.0

hi:
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but have to work with midp1.0, then how?
regards

but i have six icons in one picture, (tow row ,three column, each size 14*14)
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DejaVu doesn't contain those Chinese glyphs at all, so please don't blame ImageMagick for not rendering them.
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EDIT: typo
Last edited by barto (2011-01-28 21:52:33)

Create an Image from a Component

Can anybody tell me how to create an Image from a Component?
I intend to create an Image from a JTable now but I want to have a more generic solution of course to be able to create an Image from any Java / Swing component (Applet, JList, JButton, ...).
Thank you,
Dirk

2 ways:
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2) This:
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          // if not visible, need to make visible to make sure sizes are correct.
          if(!visible) {
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Create image from byte[]array on server side

Hello everyone..
I'm developing an application which will take snapshots from a mobile device, and send it to my pc via bluetooth. I have my own midlet which uses the phone camera to take the snapshot, i want to transfer that snapshot to my pc.
The snapshot is taken is stored in an array byte.
The image can be created on the phone itself with no problem using : image.createImage(byte[])
my problem is that when i send the array byte via bluetooth, and receive it on the server, i cannot create the image using the :image.createImage() code
The connection is good since i have tested by writing the content of the array in a text file.
Piece of midlet code:
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                 stream = (StreamConnection)Connector.open(url);
                 OutputStream ggt = stream.openOutputStream();
                 ggt.write(str);
                 ggt.close();
            }catch(Exception e){
                 err1 = e.getMessage();
            }where str is my array byte containing the snapshot
And on my server side:
Thread th = new Thread(){
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                    try{
                         while(true){
                              byte[] b = new byte[in.read()];
                              int x=0;
                              System.out.println("reading");
                              r = in.read(b,0,b.length);
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                                   i get this error message:
Exception in thread "Thread-0" java.lang.UnsatisfiedLinkError: javax.microedition.lcdui.ImmutableImage.decodeImage([BII)V
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     at javax.microedition.lcdui.Image.createImage(Image.java:367)
     at picserv2$1.run(picserv2.java:70)
Please anyone can help me here? is this the way to create the image on the server side? thx a lot

here is exactly how i did it :
while(true){
                              byte[] b = new byte[in.read()];
                              System.out.println("reading");
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Display an image from an array of bytes

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Many thanks,
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Thanks for the reply. I had a look at MemoryImageSource and other classes that relates to it. I wrote the example given, but it doesn't identify createImage(). I've implemented ImageProducer, but still complains. Have you any idea why? Thanks for your help.
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I do not know what that error means. However, if you open up the Disk Utility & go into it's Help Menu & in the search field type duplicating a CD or DVD. There you will find detailed instructions on how to create a disc image from a DVD.
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System Image Utility 10.6.3 - fails when creating NetBoot image from DVD

System Image Utility 10.6.3, trying to create a NetBoot image from a bundled installer disc that came with a 27" Late 2009 iMac (iMac11,1). Image creation fails consistently, since the image that System Image Utility creates is only 901M.
Anyone see this before?
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--------- System Image Utility log ----------
Workflow Started (2010-06-16 14:03:02 -0700)
Starting action: Define Image Source
Finished running action: Define Image Source
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Creating working path at /Library/NetBoot/NetBootSP0/NetBoot of Mac OS X Install DVD
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Finalizing disk image.
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2010-06-16 14:03:38.623 installer[2365:6f03] Error writing cache to /private/tmp/mnt.LjFArn/Library/Caches/com.apple.FindSystemFiles.plist
2010-06-16 14:03:38.625 installer[2365:6f03] Failed to enumerate /tmp/mnt.LjFArn/Library/Caches, cannot prune (
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installer: Installing at base path /private/tmp/mnt.LjFArn
installer: The install failed (There is not enough space on this disk to install the selected items. Deselect at least 6.46 GB and try again.)
Script is done.
NetBoot creation failed.
Image creation process finished...
Stopping image creation.
Image creation failed.

Brian Nesse wrote:
Hi Don, here's my guess...
The 901 number is additional space added in the scripts. This indicates that the source image size was 0.
Since you are making a NetBoot from Install media, under the covers the installer process is being run to create a NetBoot volume. The media shipped with the 27" iMac is most likely CPU specific and thus the installation fails because you are trying to create the image (i.e. install the system) on an unsupported CPU.
In order to produce a NetBoot from the install media, you'll have to create it on the 27" iMac.
Hi Brian,
Thanks for the response. This makes perfect sense. I'll give this a try and shout back!
Thanks,
Don

Create an image from a bit String

Hi everybody
I don't know if this is the correct forum for this so first of all sorry if I did it wrong. I have never created an image in Java so I am a little bit lost with my new task.
I have a bit String (for example "00111010") and I want to create an image converting the 0-s into white pixels and 1-s into black ones. The new image should be 8x1 pixels (for the previous example would be white-white-black-black-black-white-black-white).
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there's a couple ways to do it
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I just upgraded to CS4 from CS3. (I've had the disc for a year but delayed due to workshops I was giving)
When I open an image (after ACR) and try a crop by clicking and dragging from top left to bottom right, then let go the image starts floating upward! I then have to select the Hand tool and pull the image back down. This is most agravating!
It never did this in CS3, as the image stayed anchored and centered in the screen. I've gone through all the preferences and presets and find nothing about crop tool options or image handling for a crop.
How do I anchor my image, so it doesn't move?
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www.RemarkableImages.ca

Thanks for taking the time to reply.
"Why are you selecting the whole image to with the Crop Tool anyway?"
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In CS 4, when I do the quick click and drag diagonally across, the window floats up as I continue the drag to the bottom of the page.
CS 3 didn't care if I worked this way, the image didn't move. Pour CS 4 is touchy and doesn't like it! It wants to be treated with RESPECT! Hah! So I've had to change my ways and just slowly stop in the bottom right corner if I don't want the freakin image to drift up. Wish I had a vid camera to show you what I mean.
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"You could try Window – Application Frame to see if you prefer that one’s behaviour."
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I'm looking at buying a 2nd cheapo 23inch screen to have all the windows and action panels on, so I leave my Cinema screen open for just the image.
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