How to get coordinates of a ROI in an image in Labview

Hi,
I have a question regarding image processing in NI-IMAQ. I have
Ni-IMAQ module available, soon I may acquire NI-Vision too. I have an
image file and I would like to draw a rectangle as Region of Interest
(ROI) and be able to get the coordinates of the pixels in the ROI or
along the edges of the ROI. I tried to find vis for this operation. I
was able to find vis which provides the pixel values but I could not
find the vis for the above operation. Any information regarding
solution to above problem or any good resources for learning Labview
and NI-IMAQ will be appreciated.
Thanks,
Ravi.

Hello Ravi,
Thank you for using our discussion forums. We can extract the ROI by using the two IMAQ functions "IMAQ Select Rectangle" and "IMAQ Extract". From there we can get the ROI coordinates using a property node from the extracted image. Also, here are some examples regarding ROI manipulation that you might find helpful.
http://zone.ni.com/devzone/cda/epd/p/id/1239
http://zone.ni.com/devzone/cda/tut/p/id/2887
Regards,
Vu D
Applications Engineer

Similar Messages

How to get X & Y co-ordinates from an image in labview

Hello All,
I have a captured waveform from an oscilloscope. From that image I want to find the X & Y co-ordinates. Can this happens using labview?
For example, I want to calculate co-ordinates for the attached image (JPG format).
I am using LabVIEW 2011. Your help will be appreciated
Thanks & Regards,
Manisha
Solved!
Go to Solution.
Attachments:
TEST WAVEFORM.JPG ‏143 KB

It looks like you are acquiring data from a tektronix scope, the scope will be capable of giving you csv data than you having to interpret from an image. If you do need the xy co-ordinates, this may be a good starting point. http://zone.ni.com/devzone/cda/epd/p/id/2143
Beginner? Try LabVIEW Basics
Sharing bits of code? Try Snippets or LAVA Code Capture Tool
Have you tried Quick Drop?, Visit QD Community.

How to get coordinates from Google Map

I wonder how to get coordinates from Google Map to JavaFX application when click has occured. Here is an example of code:
public class JavaFXApplication extends Application {
public void showCoordinates(String coords)
        System.out.println("Coordinates: " + coords);
    @Override public void start(Stage stage)
        final WebView webView = new WebView();
        final WebEngine webEngine = webView.getEngine();
        webEngine.load(getClass().getResource("googlemap.html").toString());
        webEngine.getLoadWorker().stateProperty().addListener(
                new ChangeListener<State>() {
                    @Override
                    public void changed(ObservableValue<? extends State> ov, State oldState, State newState) {
                        if (newState == State.SUCCEEDED) {
                            JSObject window = (JSObject) webEngine.executeScript("window");
                            window.setMember("java", new JavaFXApplication());
        BorderPane root = new BorderPane();
        root.setCenter(webView);
        stage.setTitle("Google maps");
        Scene scene = new Scene(root,1000,700, Color.web("#666970"));
        stage.setScene(scene);
        stage.show();
   public static void main(String[] args){
        Application.launch(args);
// googlemap.html file
<!DOCTYPE html>
<html>
    <head>
        <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
        <style type="text/css">
            html { height: 100% }
            body { height: 100%; margin: 0px; padding: 0px }
            #map_canvas { height: 100%; background-color: #666970; }
        </style>
        <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false">
        </script>
        <script type="text/javascript">
            function initialize() {
                var latlng = new google.maps.LatLng(40.75089, -73.93804);
                var myOptions = {
                    zoom: 10,
                    center: latlng,
                    mapTypeId: google.maps.MapTypeId.ROADMAP,
                    mapTypeControl: false,
                    panControl: true,
                    navigationControl: true,
                    streetViewControl: false,
                    backgroundColor: "#666970"
                var map = new google.maps.Map(document.getElementById("map_canvas"),myOptions);
                document.map = map;
        google.maps.event.addListener(map, 'click', function(event) {
            //java.showCoordinates(event.latLng); ???
        map.setCenter(location);
        </script>
    </head>
    <body onload="initialize()">
        <div id="map_canvas" style="width:100%; height:100%"></div>
    </body>
</html>Edited by: krbltik on 03.10.2012 22:59

Hi, welcome!
You may also have a look at GPS Info Qt, available for free at Ovi Store: http://store.ovi.com/content/165671
GPS Info Qt is a nice Qt app. I have it on my C6-01 and I like it.
Regards.

How to get coordinates of components. PLEASE HELP ME URGENT!

Hi, I am trying to get the coordinates of my components that are tabbed pane buttons, buttons, text fields etc so I can place an image of a pointer under it that points to it and then under the image of the pointer I would put a label describing the button for example "press the tab to start". Then when I press tab1 the image of pointer image points to the next component and has a label under pointer.
Now I have tried using componenet.getX() and getY() and then set the values of the the image panel to use then the label panel so they be placed under the component, these panels are not using layout manager but absolute positioning. If the window is resized then the labels and image of pointer should also adjust. I have tried putting the label and arrow into a glasspane and now layerdpane as some people here suggested which when I do then add it to contentpane the main panel with the components is not there but the layerd pane is.
I am having huge difficulties with this and if someone can Please just tell me or even better give me an example code how to find out the coordinates of components so I can place my image of pointers and labels underneath them I will be very grateful of you. I am on a verge of giving up accomplish what I am doing and I am new to the swing framework. My progress to solve this has been very slow and frustrating. I just hope someone here can help.

I tried the both of codes given. But the code given by both the person i have not understand. And what they there code is doing. This is the code form my side if this example help u.
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
* Author Waheed-Ul-Haq ( BS(CS)-8 )
public class Samulation2
     JPanel pane;
     JLabel label1;
     JTextField entProcesfld;
     JButton buttCreat;
     JButton buttReslt;
     JLabel usrProcesID[];
     JTextField usrArivTam[];
     int processes;
     public JComponent createComponents()
     pane = new JPanel();
     pane.setLayout (null);
     label1 = new JLabel();     //Label for to tell user to enter no of Processes.
     label1.setText("Enter the no. of Processes");
     pane.add(label1);
     label1.setBounds(20, 25, 150, label1.getPreferredSize().height);
     entProcesfld = new JTextField();     //TextField to enter no of processes.
     entProcesfld.setToolTipText("Enter the no of Processes.");
     pane.add(entProcesfld);
     entProcesfld.setBounds(180, 25, 100, entProcesfld.getPreferredSize().height);
     buttCreat = new JButton();          //Button to create the TextFields.
     buttCreat.setText("Create TextFields");
     pane.add(buttCreat);               //Adding cutton to Jpane.
     buttCreat.setBounds(new Rectangle(new Point(30, 60), buttCreat.getPreferredSize()));
     buttCreat.addActionListener(new ActionListener() {
               public void actionPerformed(ActionEvent e) {
                    buttCreatActionPerformed(e);
               } } );          //ActionListenr to Create the TextFields.
     pane.setPreferredSize(new Dimension(600,600));
     return pane;
     }     //-------END of Component createComponents()--------//
     private void buttCreatActionPerformed(ActionEvent e)     //Action to Create the TextFields.
               processes = Integer.parseInt (entProcesfld.getText ());
               JLabel Labproces = new JLabel();     //Label of Processes.
               Labproces.setText("Processes");
               pane.add(Labproces);
               Labproces.setBounds(new Rectangle(new Point(15, 105), Labproces.getPreferredSize()));
               JLabel labArivTam = new JLabel();     //Label of Arival time.
               labArivTam.setText("Arrial Time");
               pane.add(labArivTam);
               labArivTam.setBounds(new Rectangle(new Point(90, 105), labArivTam.getPreferredSize()));
               //----Creating Dynamic JLabels------//
               usrProcesID = new JLabel[processes];     /* Makes an array */
               int yXis = 125;          //Variable for Y-axix of JLabel.
               for(int i=0; i<processes; i++)      /* i takes each value from 0 to processes-1 */
                usrProcesID[i] = new JLabel("P" + i);      /* Makes a JLabel at an array place */
                pane.add(usrProcesID);      /* Adds a JLabel (rather than an array) */
usrProcesID[i].setBounds(new Rectangle(new Point(28, yXis), usrProcesID[i].getPreferredSize()));
yXis = yXis + 25;     /* Increses the Y-axis to show JLabels. */
}     //EndFor
//-------End Dynamic JLabels---------//
               //-----Creating Dynamic Arival Time TextFields-----//
               usrArivTam = new JTextField[processes];          /* Makes an array */
               yXis = 125;          //Variable for Y-axix of JTextField.
               for(int i=0; i<processes; i++)      /* i takes each value from 0 to processes-1 */
usrArivTam[i] = new JTextField();     /* Makes a JTextField at an array place */
usrArivTam[i].setToolTipText("Enter Arival Time.");
pane.add(usrArivTam[i]);      /* Adds a JTestField (rather than an array) */
usrArivTam[i].setBounds(100, yXis, 35, usrArivTam[i].getPreferredSize().height);
yXis = yXis + 25;     /* Increses the Y-axis to show JTextFields. */
}     //EndFor
//-----End Dynamic Arival Time TextFields.-----//
//----Calculating points for Label and textfields.
Point poi = new Point();
poi = usrArivTam[processes-1].getLocation ();     //Getting the location of the last text field of ArivalTime.
//-----Label for Average Waiting time.--------\\
JLabel averWaitLB = new JLabel();
averWaitLB.setText("Average Waiting Time");
          pane.add(averWaitLB);
          averWaitLB.setBounds(new Rectangle(new Point(30, (int)poi.getY()+50), averWaitLB.getPreferredSize()));
//-----TextField for Average Waiting Time.--------\\
JTextField averWaitTF = new JTextField();
averWaitTF.setText ("Hello");
averWaitTF.setEditable(false);
pane.add (averWaitTF);
averWaitTF.setBounds(190, (int)poi.getY()+50, 35, averWaitTF.getPreferredSize().height);
}     //------END of void buttResltActionPerformed(ActionEvent e)---------//
     private static void createAndShowGUI()
//Make sure we have nice window decorations.
JFrame.setDefaultLookAndFeelDecorated(true);
//Create and set up the window.
JFrame frame = new JFrame("Priority Scheduling (Non-Preemptive)....");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Samulation2 application = new Samulation2();
//Create and set up the content pane.
JComponent components = application.createComponents ();
components.setOpaque (true);
int vertSB = ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS;
          int horzSB = ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS;
          JScrollPane scrollPane = new JScrollPane(components, vertSB, horzSB);
scrollPane.setPreferredSize (new Dimension(720,455));
frame.getContentPane ().add (scrollPane,null);
//Display the window.
frame.pack();
frame.setVisible(true);
}     //------END Of void createAndShowGUI()--------//
     public static void main(String[] args)
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
     }     //---------End of main()----------------//
}     //--------END of class Samulation2----------//
If any body help me implementing the ScrollBars in this code. I am unable to use Scroll Bars with this code while using NULL layout. If any body tell me how to get the Size and set for the pane.

How to get coordinates of FileSystemTree selected item ?

Hi can some one clue me in how to get the coordinates of the
selected itwn in a FileSystemsTree ?
thx
-g

Hi Amy,
I looked at the code, this is the width calculation.
There are four (4) parts to each of the tree node display:
1) the indent, from _listData.indent Only value id _data is
not null
2) the disclosureIcon.width
3) icon.measuredWidth
4) label measured or explicate width
The positions are calculated by:
1a) disclosureIcon.x = the indent
1b) disclosureIcon.setActualSize = disclosureIcon.width,
disclosureIcon.height
2a) icon.x = the indent + disclosureIcon.width
2b) icon.setActualSize = icon.width, icon.height
3a) lable.x = the indent + disclosureIcon.width + icon.width
3b) lable.setActualSize = lable.width, lable.height
The label width:
label.width: the size of the visible portion of the label in
the parent. It may be clipped/truncated.
label.textWidth: the total size of the text in the label
Maybe I can get the code finished today.
BTW, as I'm moving through this processes of learning flex,
the one thing I've noticed is the lack of a concise MVC model or at
least a breakout of the more complex UI components. I'd assume for
such a strategic product, there would be more investment by Adobe
in these technical areas. But, I guess its easier putting people on
a bus and send them to city to city.
-g

How to get RGB value from pixel of an image.

hi, i need a little help... Is there any EASY way to get RGB value from point of an image? I searched javadoc but i only found very complex getRGB method working only with regions, and saving data into arrays.
Is there any other way that can use for example image.getGraphics() (so, i mean to get RGB from point of Graphics object) ?
Btw.: If you know, how Sprite.collidesWith(Sprite s, Boolean pixellevel) is working (with pixellevel = true), please write me. It could solve my problem too.
Thanks

Is there any other way that can use for example image.getGraphics() (so, i mean to get RGB from point of Graphics object) ?You can think of the graphics object like a pencil or paintbrush. Does a paintbrush know the color of the surface it is painting on? No.
Btw.: If you know, how Sprite.collidesWith(Sprite s, Boolean pixellevel) is working (with pixellevel = true), please write me. It could solve my problem too.Download the reference implementation from this site and see for yourself.
luck, db

How to get transparency scroll bar to view background image of canvas.

HI,
How to get transparency to path in canvas to view background image in canvas using scroll bar control.?
This is my present output:
My Xaml Code:
<Grid Height="auto" Name="grid1">
<TabControl Background="Bisque">
<TabItem Header="Tools">
<Grid Height="1000" Width="1000" Name="grid">
<Border BorderThickness="0.2" BorderBrush="Black" Height="820" Width="820" ClipToBounds="True" Margin="90,99,90,81"></Border>
<Grid>
<Button Content="Original Size" Height="23" Name="btn_Original" Width="75" Click="btnOriginalSizePosition" Margin="4,4,921,973" />
<TextBox Height="20" HorizontalAlignment="Left" Margin="62,49,0,0" x:Name="txtNoOfZones" VerticalAlignment="Top" Width="49"
MaxLength="2" PreviewTextInput="txtNoOfZones_PreviewTextInput"/>
<TextBox Height="20" HorizontalAlignment="Right" Margin="0,71,890,0" x:Name="txtSec" VerticalAlignment="Top" Width="49" PreviewTextInput="txtSec_PreviewTextInput" MaxLength="3"/>
<Button Content="OK" Height="32" HorizontalAlignment="Left" Margin="117,59,0,0" Name="btnNoOfZones" VerticalAlignment="Top" Width="39" Click="btnNoOfZones_Click" />
<Label Content="Zone Number selected :" Height="28" HorizontalAlignment="Right" Margin="0,0,451,0" Name="lblZone" VerticalAlignment="Top" />
<Label Content="Sector Number in selected Zone :" Height="28" HorizontalAlignment="Right" Margin="364,22,451,0" Name="lblSector" VerticalAlignment="Top" />
<Label Content="Filled Color applied in selected sector :" Height="28" HorizontalAlignment="Right" Margin="336,44,451,0" Name="lblColor" VerticalAlignment="Top" />
<Label HorizontalAlignment="Left" Margin="569,0,0,0" Name="lblZoneNumber" Height="28" VerticalAlignment="Top" />
<Label Height="28" HorizontalAlignment="Left" Margin="569,22,0,0" Name="lblSectorNumber" VerticalAlignment="Top" />
<Label Height="30" HorizontalAlignment="Left" Margin="569,44,0,0" Name="lblFillColor" VerticalAlignment="Top" FontWeight="Bold"/>
<Label Content="Sectors :" Height="28" HorizontalAlignment="Left" Margin="7,67,0,905" Width="69" />
<Label Content="Zones :" HorizontalAlignment="Left" Margin="13,44,0,928"/>
<TextBlock Height="23" HorizontalAlignment="Left" Margin="4,32,0,0" Text="Change No.of Zones, sectors below and click OK button" VerticalAlignment="Top" Width="294" FontFamily="Cambria" FontSize="12" FontStyle="Italic" FontWeight="Bold" />
<RadioButton Content="Single Sector" Height="16" HorizontalAlignment="Left" Margin="744,24,0,0" Name="rBtnSingleSector" VerticalAlignment="Top" GroupName="Selection"/>
<RadioButton Content="Sector Zone" Height="16" HorizontalAlignment="Left" Margin="744,44,0,0" Name="rBtnSectorZone" VerticalAlignment="Top" GroupName="Selection"/>
<RadioButton Content="Circular Zone" Height="16" HorizontalAlignment="Left" Margin="744,64,0,0" Name="rBtnCircularZone" VerticalAlignment="Top" GroupName="Selection"/>
<RadioButton Content="Panning" Height="24" HorizontalAlignment="Left" Margin="744,4,0,0" Name="rBtnPanning" VerticalAlignment="Top" Width="74" GroupName="Selection"/>
<Border x:Name="clipBorder" BorderBrush="Black" BorderThickness="0" ClipToBounds="True" Height="810" Width="810" Margin="95,104,95,86" CornerRadius="10">
<Canvas x:Name="CanvasPanel" Height="800" Width="800" Background="Transparent" ClipToBounds="True"></Canvas>
</Border>
<RadioButton Content="Random Color" HorizontalAlignment="Left" Margin="868,5,0,979" Name="rdBtnRandomColor" GroupName="rdbtnGroupFillColor"/>
<RadioButton Content="Red Color" Height="16" HorizontalAlignment="Left" Margin="868,24,0,0" Name="rdBtnRedColor" VerticalAlignment="Top" GroupName="rdbtnGroupFillColor" Foreground="#FFF81010" FontWeight="Bold" />
<RadioButton Content="Green Color" Height="16" HorizontalAlignment="Left" Margin="868,44,0,0" Name="rdBtnGreenColor" VerticalAlignment="Top" GroupName="rdbtnGroupFillColor" Foreground="#FF175F17" FontWeight="Bold" />
<RadioButton Content="Adjacent" Height="16" HorizontalAlignment="Left" Margin="435,81,0,0" Name="rdBtnAdjacent" VerticalAlignment="Top" GroupName="Selection" />
</Grid>
</Grid>
</TabItem>
<TabItem Header="Change Background">
<Grid Height="1000" VerticalAlignment="Top" Background="Bisque">
<Button Height="70" Width="70" Margin="6,1,892,929" Name="btnBrowseImage" Click="btnAll">
<Image x:Name="browseIcon" Source="D:\WPF\Projects\TabControlVRI_18_12_2014\Images\img.png" MouseLeftButtonDown="Image_MouseLeftButtonDown_1"/>
</Button>
<Button Height="70" Width="70" Margin="92,1,806,929" Name="btnCenterPoint" Click="btnAll">
<Image x:Name="centerIcon" Source="D:\WPF\Projects\TabControlVRI_18_12_2014\Images\center.jpg" Width="54" Height="48" />
</Button>
<Button Height="70" Width="70" Margin="179,1,719,929" Click="btnAll">
<Image x:Name="boundaryIcon" Source="D:\WPF\Projects\TabControlVRI_18_12_2014\Images\Path_Simple.png" Height="44" Width="49" />
</Button>
<Image Name="imgBackground" Height="800" Width="800" MouseLeftButtonDown="imgBackground_MouseLeftButtonDown">
</Image>
</Grid>
</TabItem>
</TabControl>
</Grid>
C# code:
OpenFileDialog op = new OpenFileDialog();
ImageBrush ib = new ImageBrush();
private void Image_MouseLeftButtonDown_1(object sender, RoutedEventArgs e)
op.Title = "Select a picture";
op.Filter = "All supported graphics|*.jpg;*.jpeg;*.png|" +
"JPEG (*.jpg;*.jpeg)|*.jpg;*.jpeg|" +
"Portable Network Graphic (*.png)|*.png";
if (op.ShowDialog() == true)
ib.ImageSource = new BitmapImage(new Uri(op.FileName));
imgBackground.Source = new BitmapImage(new Uri(op.FileName));
CanvasPanel.Background = ib;
Please help me out to get transparency for path in canvas to view background image in canvas.
The complete code is in below link:
https://onedrive.live.com/redir?resid=876CFAE94C306176!112&authkey=!AC1sQIYwyoRYT_o&ithint=file%2crar
Regards,
Viswa.

Hi ViswAmmu,
>>Please help me out to get transparency for path in canvas to view background image in canvas.
If I'm not misunderstanding, I think you just need to loop through all Canvas.Children and set Opacity property for them:
private void Image_MouseLeftButtonDown_1(object sender, RoutedEventArgs e)
//Loop through all children items
foreach(UIElement v in CanvasPanel.Children)
v.Opacity = 0;
op.Title = "Select a picture";
op.Filter = "All supported graphics|*.jpg;*.jpeg;*.png|" +
"JPEG (*.jpg;*.jpeg)|*.jpg;*.jpeg|" +
"Portable Network Graphic (*.png)|*.png";
if (op.ShowDialog() == true)
ib.ImageSource = new BitmapImage(new Uri(op.FileName));
imgBackground.Source = new BitmapImage(new Uri(op.FileName));
CanvasPanel.Background = ib;
Screenshot:
We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
Click
HERE to participate the survey.

How to get the Macbook app which sends camera images back if someone steals it

There was a story run in a UK paper this week of someone who recovered their stolen Macbook because he had a programme on it that activated the camera when the laptop was in use, it then relayed the stills and moving pictues back to him and the theif was clearly identified!
Anyone know how to get this??
AJ

http://www.orbicule.com/undercover/mac/index.html

In Flex2, How to get coordinates in a view port?

I know one can use something like
fooUIControl.localToGlobal(new Point(x,y))
to get the coordinates corresponding to the origin at the top
left of the main flex app 'document'.
In case that the main flex app scrolls, how can I get the
coordinates corresponding to the origin at the top left of the
visible screen (or the 'viewport')? Or in other words, how can I
find out how many pixels are scrolled in X and Y? Thanks.

The horizontalScrollPosition and verticalScrollPosition
properties of a scrolling container tell you how many pixels it has
scrolled.

How to get coordinates of QuadArray?

If I get QuadArray through picking,
how do I get the coordinates of the QuadArray?
Is there any method like (QuadArray.getCoordinates doubles[])
so I can get the Coordinate of the QuadArray?
Thanks in advances!
The code is as follows.
    Point3d[] ps=new Point3d[4];
    ps[0]=new Point3d(0.0,24.0,0.0);
    ps[1]=new Point3d(48,24.0,0.0);
    ps[2]=new Point3d(48,24.0,12.0);
    ps[3]=new Point3d(0,24.0,12.0);
    QuadArray qa=new QuadArray(4,QuadArray.COORDINATES|QuadArray.QuadArray.COLOR_3);
    qa.setCoordinates(0,ps);
    qa.setColors(0,cyan_s);
    Shape3D s3d=new Shape3D();
    s3d.setGeometry(qa);
    TransformGroup TG=new TransformGroup();
    TG.addChild(s3d);
    BranchGroup BG=new BranchGroup();
    BG.addChild(TG);

hi,
it might be the case that i am not able to get u properly,but wht i guess is u want a acess to (x,y,z) values in quad array..regarding tht as quadarray ia also an array so each element of it can be accessed through indexing,and then to retrive the x,y,z values u can use dot oprator..
eg:
x=qarray[0].x;
y=qarray[0].y;
i guess it will help...
kk

How to get Coordinates of edges from image into excel

Hi,
I am new to labview and I am doing a project in which i move an XY stage under a laser to etch pictures. So far I have managed to get the stage to move by reading off coordinates from an excel spread sheet and so can draw pictures if I have the coordinates.
I am trying to use the vision module to be able to put any image in and then find the edges, get the coordinates of the edge and so draw the image. Using the vision assistant I do colour plane extraction (to make greyscale) then use shape detection looking for lines with a small minimum length, this gets the information i want and if i click the button on the right that says send data to excell i get a spread sheet with all the information i need. However, I cant get it to automatically save to excell (the write to spread sheet function doesnt work as "The type of the source is 1-D array of cluster of 5 elements."
It would probably be bettter if i could use the output of the vision assistant (shape detection) straight away without having to save to excell but I cannot extract the information i need from the output as none of the array/cluster functions seem compatible with the data. I am using labview 10 and have attached my VI below any help would be greatly appreciated!
Attachments:
image to coords (good).vi ‏109 KB

Hello hzub1,
It seems your having trouble getting to the information in the output of your Vision Assistant. You can use Context Help (Ctrl+H to show) to help understand the contents of a large array or cluster when you hover your mouse over the wire (see below).
Looking at the above I created the code below which breaks out all the contents of one item in the array.
Here I use the Index Array function to break out one element of the array. Each element is a circle descriptor, cluster of 5 elements so I use the Unbundle by Name function to access each of the values in the cluster
I hope this helps,
Jack. W
Applications Engineer
National Instruments

How to get the page count of a tiff image:

Hi,
My process takes input (of document type) tiff image. I want to get the number of pages present in the tiff image into one of my process variables.
How can I get that?
Thanks,
kc

Hi
I'v tried rennie1's way ,but I only get zero,my code is:
rs.executeQuery("select count(*) from t_test");
if (rs.next()) int rowCount=rs.getInt(1);
I also tried barni's way ,but the method rs.last() and rs.beforeFirst() throw a same Exception
I tried another way,the code is:
while rs.next(){
// Do nothing ,just move the cursour to the last row
int rowCount=rs.getRow()
However,the rowCount still equal zero
Any help would be greatly apprecite!
note:
I get connection by DataSource's JNDI name from client, the Server is Weblogic Server 6, the DBMS is Oracle.

How to get scaled copy of bitmapData of an Image?

For the class spark.components.Image
I can access the bitmapData object (readonly) (unscaled).
I know the scaling factors of the Image.
How can I get a scaled version of the bitmapData?
Thanks!

This response on stackoverflow pretty much shows how I scale bitmaps when I need too.
thttp://stackoverflow.com/questions/964495/what-is-the-best-way-to-resize-a-bitmapdata-obje ct

How to get rid of a background in an image?

Does anyone know of an easy way to get rid of the background in the attached image and just keep the red print?
Any ideas appreciated.
If someone knows of an easy way, I have a much larger version of the image in PNG format.

Another way to proceede is to convert it to B/W and adjust the conversion for taste. Then clean it up using curves or levels and clip it to a red fill layer. Here is a quick proof of concept. Doing it in sections would produce better results. The rectangles are new additions.
I suspect this trade mark is still in force and owned by Honeywell and should not be used for commercial purposes.
Paulo

How to get Point Grey Dragonfly firewire cameras to work with LabVIEW 2010

We recently got a new computer. The O.S. is Windows 7, 64-bit. It has LabVIEW 2010 (also 64-bit) and the Vision Development Module, as well as the Vision Acquisition Driver. We also have Point Grey Dragonfly Express cameras. The first trial of using LabVIEW to get images from one of the cameras yielded greyscale images (they are color cameras). We then installed the Point Grey drivers (flycapture2.1.3.4_x64). After installing the drivers, the camera was is no longer recognized in MAX. Does anyone have pointers or advice? Thanks.

It's been a bit since I've messed with camera settings. But I think LabVIEW requires the NI-IMAQdx driver and the greyscale was from not setting the bayer filter. I can't poke around my camera settings right now, so I can't double check.

How to get coordinates of a ROI in an image in Labview

Similar Messages

Maybe you are looking for