read an image

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• Create a DLL to read an Image using OpenCV

  Hi all

  I am trying to create a DLL to perform image processing using OpenCV. In the first place, so I try to create a DLL that can read an image and display it. But I encountered a problem when I call this DLL in LabVIEW.

  The error in LabVIEW that says: "error 1097 appeared to call library function node in the .vi DLL Image playback (Play).

  Possible reasons:

  LabVIEW: An exception occurred in the external code that is called by a node call library feature. The exception may have damaged the memory of LabVIEW. Save all work to a new location and restart LabVIEW. »

  Here are the steps I followed:

  1. download OpenCV2.4.9 and extract the files. Make changes appropriate to the Environment Variables to include OpenCV.

  2 start a new 2010 Visual Studio from Microsoft Project to create a DLL.

  3. Add a property sheet in the property manager to include the OpenCV library.

  4 change the DLL of playback picture .cpp code (Play) as it is in the attachment.

  5 compile to create the DLL of playback picture .dll (Play) file.

  6 create a LabVIEW VI to call the DLL.

  Attached are the related files: 1 .cpp reading Image DLL (game) 2. Read Image .dll DLL (reading) 3. Read Image .vi DLL (game)

  If someone good to help me with this? I guess it might be the problem with the .cpp code DLL Image playback (Play).

  Thank you very much.

  1 joint code .cpp DLL Image playback (Play):

  include opencv necessary image processing libraries

  #include "stdafx.h".
  #include "opencv2/highgui/highgui.hpp".
  #include "opencv2/imgproc/imgproc.hpp".
  #include
  #include

  using namespace std;
  use of names cv;

  Function declaration
  extern "C" {}
  __declspec(dllexport) int main (int argc, char * argv);
  }

  Global variables
  Matt IMG;

  __declspec(dllexport) int main (int argc, char * argv)
  {
  Load the image
  IMG = imread (argv [1], 1);
  return 0;
  }

  Hello

  If it helps, here are some examples on Labview/OpenCV image processing:

  https://decibel.NI.com/content/blogs/kl3m3n

  Best regards

  K

• reading the images and icons from jar file

  Hello
  I applied the tutorial in the corner of the adf
  [read the image of the jar file | http://www.oracle.com/technetwork/developer-tools/adf/learnmore/86-images-from-jar-427953.pdf]
  and deploy it in logical built-in web server
  my version 11.1.2.3 Jdeveloper
  
  but the images did not appear
  For example: when I drag the button and try to specify icon for this button no image for the library referance
  
  How can I fix this problem or missing steps in the application of the link above?
  Thank you

  I just ran this tutorial recently, took a few tries but everything worked according to the instructions in the article. You should check your steps on. set install to the top of the jar, add it to the project lib reference and use "/ adf/images / ' as the value of the icon. That should be all you need to do at the moment of the conception of the image displayed when running, you need to install the pot to your embedded wls and also change your weblogic - application.Xml.

• read an image of an mpeg video

  I have need to progammatically read a frame of an mpeg video.

  I already tried to make use of ffmpeg and convert the sequence video in a png (or other), but now I would develop a more powerful solution.

  Do you have anyone try or need something similar?

  Thank you!

  Thanks for the reply Scott.

  I solved my problem!

  After several tries, I used an OpenCV dll: opencv_highgui240.dll (version 2.4.0).

  Since I had some problems with the dll included in the official OpenCV package, I used those included in the package of Emgu http://www.emgu.com/wiki/index.php/Main_Page

  This dll is not static, so I had to take care on the directory of current work of Windows (see here https://decibel.ni.com/content/docs/DOC-7192 ).

  Now I am able to extract an MPEG2 video images and put them in an IMAQ RGB image (640 x 480 images I need 10 ms for each image).

• How read the images path ' in the stored catalog?

  I'm really new to an attack development, and LR. I have a problem to find the right methods to run my intentions.

  I would get the paths real pictures in the catalog, so that my external plugin can be used for further processing.

  [I don't know Lightroom stores catalogue on behalf of C:\Users\[user] \Pictures\Lightroom\Lightroom 5 Catalog.lrcat. But I want to get the real path to each .jpg inside this catalogue and write this path in a simple file (for example, .txt) where my plugin can read the path and use the images chosen by the user in LR.

  
  

  Then my plugin stores the images processed with tags in a file that should be read by LR. I don't know if it's that easy. Perhaps, he should create an additional collection for the catalog?
  

  The thing is that the Lightroom 5 manual is not really useful. And it would be great if someone could help me.

  You can obtain the path of a picture with photo file system: getRawMetadata ('path').

  Plugins can add new pictures to the catalog - see catalog:addPhoto ().  All the metadata in these photos will also be imported into the catalog.  In addition, a plugin can add additional metadata using the methods supported by the LrPhoto class.  However, these methods are incomplete infuriatingly - for example, there is no way to change the capture time.

  If you have more specific questions, get out of here.

• When I import my pictures, I get a message saying lightroom ACITN read my images.

  I used this process 100 times and now all of a sudden it tells me it can't read any of the photos on my camera. I thought maybe it was the memory card in the camera, so I change and he said distillers that he cannot read images.

  One of the possibilities is that you can try to copy the files on a hard drive, folder, subfolder that you do not have a full read and write permissions.

• Read an image of a Bytearray?

  I need to read a disk image (jpg, png, gif) to bytearray and then encode using Base64Encoder. Please help me how do.

  var base64:Base64Encoder = new Base64Encoder();

  var loader: Loader = new Loader();

  loader.contentLoaderInfo.addEventlistener (Event.COMPLETE, completeF);

  Loader.Load (new URLRequest (whatever);

  function completeF(e:Event):void {}

  Base64.encodeBytes (Loader.LoaderInfo.bytes);

  }

• Read only images - how to unlock

  It's the kind of thing that drives me crazy.  Hours, I tried to open images in "bridge."  The images are all files-RAW images of the milky way (night sky) that I wash to stack, with the idea that multiple images of the night sky even will show a large detail when stacked, etc. The problem is that they are a symbol of locking of the cushion on them.  This makes them an image of 'read only '.  There is no obvious way to open these images.  Two books on photoshop provide no response in the index.  Secondly, I would like to auto - align the images, but it doesn't seem to be a way to do this in CS - 4.  Any ideas are appreciated.

  Now for constructive critisim of Adobe.  Extremely expensive product that you sell, you are doing a horrible, horrible, work provide customers what they need to use the software.  Why isn't there a DVD included with the software that provides comprehensive and detailed information necessary so a question can easily answer?  Why you force your customers to your web site?  To use your web site, I had to accept your software spies, lower my security settings, deal with nonsense of password and login.  And if you don't have high speed internet, forget your site TI-loading takes forever.  I lost hours to get to this point.

  And I will never buy CS5.  I'll never buy Adobe again: the frustration level is medium to high.  Someone suggests photo editing software they like better than CS4?

  For read only files, go to Windows Explorer and select these files. RT-click top, and then click Properties. Down will be attributes. Is check read-only? If they are read-only (and not locked because of permissions, etc), if you uncheck the box, then the files will no longer be read-only. One of the common reasons to make them read-only, is if they were copied from a DVD or CD, although it sounds like you handled in ACR, from the original Camera RAW files. Is this correct?

  For files that have been locked by some other means, there is great use, Unlocker, which should be able to unlock the files. Not necessary IF they are just read-only.

  Good luck

  Hunt

  [Edit] As it took me 8 tries to this post, he gets up late, but NOW I see that Marian had given the same solution and an hour before. This post wasn't projection, when I started to try to this post. The forum becomes more wobbly every day!

• How can I change the background of PSE so I can read 'file' 'image '' edit'? '.

  the color of the window of the EP is so dark, that I can't read the 'folder' 'change' 'image' etc... I pray that there is a way to change this.

  Help!

  PSE 7 has a cursor in Edit > Preferences > General to the organizer and editor.

• Reading blob images!

  Hello! I have a servlet:
  

  package kokaugi.view.servlets;
  
  import java.io.IOException;
  import java.io.PrintWriter;
  
  import javax.servlet.*;
  import javax.servlet.http.*;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import oracle.jbo.ApplicationModule;
  import oracle.jbo.Row;
  import oracle.jbo.ViewObject;
  import oracle.jbo.client.Configuration;
  import oracle.jbo.domain.BlobDomain;
  
  
  public class ImageServlet extends HttpServlet {
  
      public void doGet(HttpServletRequest req, HttpServletResponse res) 
                                               throws ServletException, IOException {
           processResponse(req,res);
       }
  
       public void doPost(HttpServletRequest req, HttpServletResponse res) 
                                               throws ServletException, IOException {
           
           processResponse(req,res);
       }
          
       private void processResponse(HttpServletRequest req, HttpServletResponse res) 
                                               throws ServletException, IOException{
           
           String imageId = req.getParameter("Id");
           OutputStream out = res.getOutputStream();
           
           String amDef = "kokaugi.model.KokaugiModule";
           String config = "KokaugiModuleLocal";
           ApplicationModule am =  Configuration.createRootApplicationModule(amDef, config);
           ViewObject vo = am.findViewObject("ADokumentiDati1");
           
           if(imageId != null){
             vo.setWhereClause("A_DOKUMENTI_PK=:img_id_tab");
                        vo.defineNamedWhereClauseParam("img_id_tab", null, null);
                        vo.setNamedWhereClauseParam("img_id_tab", imageId);
                        String query = vo.getQuery();
                        System.out.println(query);
                        vo.executeQuery();
  
           }
           
           if(vo.getEstimatedRowCount()==1){
              
              Row currentRow = vo.first();
              String contentType = (String)currentRow.getAttribute("DokumentaTips");
              
              if(contentType.equals("image/jpeg") || contentType.equals("image/gif")|| contentType.equals("image/png")){
                  
                      BlobDomain image = (BlobDomain)currentRow.getAttribute("Dokuments");
                      res.setContentType(contentType);
               
                              InputStream is = image.getInputStream();
                              byte[] buffer = new byte[10 * 1024];
                              int nread;
                              while ((nread = is.read(buffer)) != -1)
                              out.write(buffer, 0, nread);
                              out.flush();
                              out.close();
              }
           }
          Configuration.releaseRootApplicationModule(am, false);
       }
  
  }

  Then on the page I can see images using:

   /ImageServlet?Id=#{bindings.ADokumentiPk.inputValue}

  Displaying images in folders I can see them but others do not! Where would be the problem? If you need more information, please let me know it!
  
  best regards, Debuger!

  Debuger,
  I had the chance to study your problem during my lunch break :-)
  You missed a few things in your implementation.

  The problem has nothing to do with the code of the servlet (mine) but with triggers missing (ViewCarousel) and the misuse of the VO in the servlet (TestUpload and ViewCarousel).

  For triggers: If you use the navigation in the form (master) buttons, you need a partial trigger for the carousel. Otherwise, you will see the old images

  Misuse of VO: you cannot use the same VO in the servlet that you use in the user interface. This will cause trouble, crushing each other requests because. In your case project data model has been implemented so that you only see images of the first record, because after having sailed in the second, you are using always the application connected to the first user (people id still points to the first user and you asked imageId of second user-> result: no image found).
  Since a PK gives you access to the image that you need not connect to the peopleId in servlet image. Just use the ID of the image to get it. To do this, you must change your data model and add a named for example BlobTableImageServlet view for your data model in the module of the application. This VO uses an another record set to get the images and will not bother your master/detail in the user interface. This means that you can get images via ID here without crushing the query of the user interface.

  In order to preserve the MVC pattern, you need to implement a method of service (in the module of the application or the BlobTable VO) and publish it. The servlet to image you just to call the service with the id of the image method and send the image. The servlet image didn't need to know how you got the picture of the DB (or any other source).

  You can use the servlet to the TestUpload and case ViewCarousel. No need to use different servlets. The servlet should make just the image in the UI without worrying that originally it.

  Another mistake was in the case of ViewCarousel. To see all images from a user, you must use the imageid stemped (#{point.) ID}) instead of the selected id (#{bindings.) Id.inputValue}). otherwise you will see an image several times.

  I change your project to show you how I would implement it. You can check the details here.

  To run the project, you need to change the connection information to your DB.
  You can load the http://hypershare.de/files/zSc44PS1286547917.html workspace

  Timo

• Problem reading video image from the camera IP Axis - confusion of variant data buffer.

  Hi there;

  I am writing a VI for an Axis IP camera.  He went to work, but I need to extract individual video stream images so I can overlay text using the functions of text IMAQ overlay.

  The thing is when I take a picture using the axis dll library (GetCurrentFrame), it returns a buffer size and a Variant representing the raster data.  The data is = 921 640 bytes representing a 40 byte header, and then the 640 x 480 x 3 raster data.  When I run the vi, I get a correct value for the size of the buffer (921 640) so I know it works.

  What don't understand me, it's the video image is placed in a buffer of type variant.   I don't quite know how to extract the raster data of the data type of "buffer" which is a type variant.  My apologies, I'm a bit ignorant in how to handle the types of "Variant".

  Does anyone have a suggestion?

  This is the VI

  Hi Peter,.

  Just to confirm, what IMAQdx version do you use?  You want to get the version 2010.3 since it is the latest version: http://joule.ni.com/nidu/cds/view/p/id/1641/lang/en

  The next issue would be that the Ethernet cameras discover is not necessary and that it is only used for GigE Vision cameras. The VI was named before IP camera support has been added and the name is unfortunately confusing now. In any case, the discovery of cameras takes place in the background and is automatic. The VI list must list your camera. It may be worth trying just to see if the camera appears in first MAX. Note that the IP camera must be installed on your local subnet, so it can be discovered.

  Regarding the examples, virtually none of the IMAQdx examples included in help-> find examples should work.

  Eric

• WebWorks BB10 not read file image of phone storage

  Hello. I'm trying to get a file from storage after taking a picture, resize, and then converted to base 64. I have most of it down, but I'm stuck on an error...  On the device, it records an empty string on the Simulator, it works well... Here is my code...

  function startCameraApp() {}
  PhotoTaken = false;
  blackberry.event.addEventListener ("onChildCardClosed", sharePhoto);

  BlackBerry.Invoke.Invoke ({}
  target: 'sys.camera.card '.
  (}, onInvokeSuccess, onInvokeError);
  }

  function sharePhoto (request) {}

  Console.log ('Hoezit');

  image of var = new Image();
  image.src="file://" + request.data;
  image. OnLoad = function () {}
  resized var = resizeMe (image); Send it to the Web
  imagedata var = resized.split ("base64"),
  sessionStorage.setItem ("MyPhoto", imagedata);
  }
  }

  function resizeMe (img) {}

  var canvas = document.createElement ('canvas');
  var max_width = 600; a 275
  var max_height = 600; a 275
  var width = img.width;
  var height = img.height;

  calculate the width and height, constrain proportions

  If (width > height) {}
  If (width > max_width) {}
  height = Math.round (height * width/max_width);
  width = max_width;
  }
  } else {}
  If (height > max_height) {}
  width = Math.round (width * height/max_height);
  height = max_height;
  }
  }

  resize the drawing area and draw the image inside data
  IMG. Width = width;
  IMG. Height = height;
  Canvas.Width = width;
  Canvas.Height = height;
  Canvas.ClassName += "ui-hide"
  CTX var = canvas.getContext ("2d");
  ctx.drawImage (img, 0, 0, width, height);
  Return canvas.toDataURL ();
  }

  The resize code should work fine. As says. The camera takes my picture and it works cool and everything, but on my device, it simply records an empty string. I should also mention that the path back to the sharephoto function is...

  /Accounts/1000/shared/camera/ImageName.jpg

  I'm so stuck and I really need help. I don't know why it works on the Simulator and not my camera.

  Oh and also. I have in my config file...

  
  
  

  <>ermissions >
  <>Ermit > read_geolocationermit >
  <>Ermit > read_device_identifying_informationermit >
  <>Ermit > access_sharedermit >
  <>Ermit > access_pimdomain_contactsermit >
  <>Ermit > use_cameraermit >
  ermissions >

  
  
  
  

  Thanks in advance

  I found my problem... You must add the correct authorization...

• Help! Shooting auto (video) w / webcam. Reading reverse image/text. How to fix with first Pro CC?

  I filmed myself with webcam on my computer so everything is reversed. Example, the cup of coffee with the name is back, the business card that I show the camera, text, letters, words, all reverse, backward. I filmed it all the way and later learned about the setting of film to the appropriate way to avoid this problem. Is it possible that Adobe Premiere Pro CC can fix this? This difficulty? How? Thanks, JR

  Try the Outlook's FX 3D and flop of the image.

• Problem reading disc image

  I just bought and downloaded a full version of Lightroom 5 upgrade (no creativity cloud). I have successfully completed the purchase and download but my Mac Pro cannot open the package (I just downloaded another Adobe product successfully yesteday).

  I have a lot of disk space. I have Mac OS X 10.6.8 and 8 GB of RAM. Any ideas why it does not open?

  I have a copy of Lightroom 3 and 4 on the machine already running very well.

  I'll try redownloading this package, but I was wondering if others have this problem.

  It seems I need to download again. He ran this time. Thanks for the idea, but no, for some reason any, that must have been corrupted.

• How to read the 32-bit depth .bmp image

  How to read the image, 32-bit depth using LabVIEW .bmp?