Over 2 to select object in image processing

how to Over 2 to select object in image processing???
please help me

Hello,
Do you mean that you would like to make multiple geometric or pattern matches in an image? There is an example that is shipped with the LabVIEW Vision Development Module that may be of use to you. Here is a link that explains how to find this example:
http://zone.ni.com/devzone/cda/epd/p/id/5681
-Erik S
Applications Engineer
National Instruments

Similar Messages

Image processing over wireless

Hi,
One of our subsidaries has a setup where continuous video stream is generated from certain application servers processing real time image processing.
The setup goes this way; 3 PC's which run these image processing & are connected to a 3750G switch.
This switch is uplinked to an access point which then carries all these over wireless to the image processing main server.
About two weeks ago, when they tested this ,all 3 PC's had issues running together when operators viewed/worked upon the images on them.
When either one or two of them is turned off, the rest works fine with no disturbance( intermediate stop & start of images ).
Please help with suggestions on what could be the cause. I suspect bandwidth, but since this doesn't cover any WAN links, i doubt that bandwidth is actually the problem.
Thanks in advance.

It depends. QoS will help if your having congestion on the wired side. WMM QoS will help for over the air. I would look at the switch port and see if you see drops on both the map and rap side. You might just be over utilizing the backhaul. Remember that it is half duplex link so that can be an issue also. I had an install with regular AP's and 3gb video uploads within 30 minutes and the only way to achieve that is only allowing 4-5 clients per AP. the testing you have done seems to show that the max you can do over that link is 2. How much other traffic is using the wireless. Maybe try to isolate those traffic on a separate RAP/MAP pair using AP Groups.
Sent from Cisco Technical Support iPhone App

Hi there! So I am using Lightroom 3 on a pc and I have ran into an issue when exporting images. The DPI and image size (in inches) that I am selecting during the export process. For example I just exported a collection and set the dpi to 180 and the size

Hi there! So I am using Lightroom 3 on a pc and I have ran into an issue when exporting images. The DPI and image size (in inches) that I am selecting during the export process. For example I just exported a collection and set the dpi to 180 and the size to 7 inches on the long edge. My exported result is 457 dpi and sized at 3200x2134 pixels.. Any ideas on why this is happening and what I can do to correct it?

The DPI setting in a digital image has no meaning at all. You need to learn how to calculate what you need in your exported image. The only measurement in a digital image that has any meaning is the number of pixels in each direction. It doesn't matter what you set that DPI to (actually it's PPI or pixels per inch). The image will have the same number of pixels regardless of the setting. If you need an image that is 5 x 7" (for example) at 200 PPI then you would want an image that measured:
5 x 200 = 1000 pixels
7 x 200 = 1400 pixels
So you would need an image that is 1000 x 1400 pixels to have a 5 x 7" image at 200 PPI. The reason your exported image had such a high PPI setting is because you specified the number of inches you wanted the image to be. And there were enough pixels in the image that it calculated out to be that high PPI setting.
I apologize, I don't explain this very well. But you need to learn to do the math to determine how large you really want your exported images to be.

Image processing with BLOBS: how to write BufferedImage to a BLOB

Hi everybody - thanks in advance for any input on that topic.
I'm doing image processing using AWT and 2D. Images are stored in a RDBMS as BLOB Type, which I get using JDBC and convert to a BufferedImage using a JDBCImageDecoder.
Now, I have my BufferedImage and I can process them using the appropriate filters (ConvolveOp e.g.)
Writing the BufferedImages to disk or display on screen is easy. But I can't get to write them to a BLOB Object. Any Hint ?
(Of course, I'm speaking of oracle.sql.BLOB objects, not java.sql.Blob).
Thanks and have a nice day

Billy,
Thank you for your answer. I have two questions.
First what that means "Bob's your uncle ?" I'm a french man, not used to english special sentences ou jargon. Would enjoy to know !
Second, I have created a PL/SQL procedure to update my table. I face a problem.
I want to initialize b_lob with the img_blob value but I get an error : "ORA-22922: nonexistent LOB value". WHere do my error comes from ? I am fairly new in this stuff of BLOB.
Below my procedure.
Thank for your kind help.
Christian.
create or replace
procedure insert_img as
f_lob bfile;
b_lob blob;
loops number default 0 ;
lines number default 0;
stmt varchar2(4000);
cursor c1 is select img_blob, file_name, pk from photos FOR UPDATE ;
begin
NULL;
dbms_output.enable(900000);
stmt := 'SELECT COUNT(*) FROM PHOTOS';
EXECUTE IMMEDIATE stmt INTO LINES ;
for ligne in c1 loop
exit when loops >= lines ;
loops := loops+1;
update photos set img_blob= empty_blob() where CURRENT OF C1;
-- return img_blob into b_lob;
b_lob := ligne.img_blob ;
f_lob := bfilename( 'MY_FILES', ligne.file_name );
IF (DBMS_LOB.FILEEXISTS(f_lob) != 0)
THEN
      DBMS_OUTPUT.PUT_LINE('BFILE exist: '|| ligne.file_name || ', ligne :'|| ligne.pk);
      dbms_lob.fileopen(f_lob, dbms_lob.file_readonly);
      dbms_lob.loadfromfile( b_lob, f_lob, dbms_lob.getlength(f_lob) );
      dbms_lob.fileclose(f_lob);
      dbms_output.put_line('ligne.pk :' || ligne.pk || ', lines : ' || lines || ', loops ' || loops);
ELSE
    DBMS_OUTPUT.PUT_LINE('BFILE does not exist: '|| ligne.file_name || ', ligne :'|| ligne.pk);
END IF;
end loop;
commit;
end insert_img;

Image processing - doubling frequency?

There's some image processing commands in photoshop, like high pass and blur (i.e. low pass). I want more. Is there a way to achieve frequency doubling, or better yet, frequency x N where N is any number the user can specify?
This may be useful for making coarse skin texture look finer. It can be implemented by diving the selected area into small squares, and then shrink each squares to half their original sizes. This would make the details look finer grain (hence frequency doubling). It would open up gaps between the squares, which can be filled in by taking additional samples and shrinking them to fill the gaps. This is similar to frequency doubling in audio processing.
I'm using cs4 extended. Is there an add-on to do this?

Yes there is a retouching method that uses "so called" high frequency and low frequency layers. There is a great discussion in the retouching section on a site called Model Mayhem. Some pretty clever retouchers hang out there. You can use this effect to smooth skin for portraits, and you can vary the smooting from just a small amount to some of the images used in makeup advertising where the model has a perfect yet sort of plastic looking skin. I use this technique now and again working on portrait subjects that have less than perfect skin.
Basically you make two copies of your opening layer, name the first layer "Low Frequency" and the second layer "High Frequency".
Select the Low Frequency Layer and apply a small amount of Gaussian Blur around 2.9 is a good starting point
Now go to the High Frequency Layer and go to Image and select apply image. In the drop down select your low frequency layer and check the invert box and set the blending mode to add with a scale of 2 offset 0 and apply then change the Layer Mode to Linear Light. You now have two retouch layers you can work on and you still maintain some texture in the skin.
To finish off, select the Low Frequency Layer and duplicate and name as smooth skin. Apply a blur, surface blur works best with a starting point of Radius = 7 and Threshold = 6 apply and then create a black mask, Now painting with white over selected parts of the image will smooth out the skin.
Experiment with the settings to get the effect you are looking for. Also, when cloning and healing on the high and low frequency layers look to see what is effected which will give you a better idea on the seperation technique.
Here is a quick example of this technique
The Before Image
The After Image
Mike

Batch image processing from bridge cause photoshop to crash

But first it goes ahead and processes the images selected in Bridge. All of them like even over a hundred at a time (great time saver!). Then displays a message for each image in one error dialogue saying, "Sorry Photoshop couldn't process the image. . ." for each image.
It also saves the images to the a folder above (in hierarchy) instead of the folder I select in the batch dialogue. I've tried using Batch process from within Photoshop and get the same result as image process from Bridge.
While I am able to do the processing I need, it's annoying to have the force quit Photoshop each time, and Then to move the processed images where they belong.
I am on a G5, 4mb ram, OSX 10.4.11. Photoshop CS3 #10.0.1, and bridge CS3 # 2.1.1.9.
I usually do the updates when I'm alerted, but haven't heard of anything recently.
Any ideas?

Hi SSPrengel
OK - maybe this will shed some light
Try changing the size to something very small.- see below
Try changing the compression. Not affected by the level of Quality (2% 50% or 100%) - all fail to load
Try changing whether a color-profile is embedded or not. Not an option AFAIK in LR Export
Try changing if the metadata is minimized or not. Not an option AFAIK in LR Export
Try changing if the JPGs are exported relative to the source image or some fixed location. Exported to a specific location.
If I use the Image export resize option it loads OK (resize to 1000*673 from 3916*2634).
Older exports (from LR2.3 and earlier, of the same size image, and source DNG are OK)
A centre crop from the Image (1205*691) is OK. A marginal crop (2 edges) (3838*2552) is OK whereas a very slight crop at (3693*2614) FAILS
The camera is Leica M8, images is in Leica RAW format (DNG).
It appears to be function of Image export size (reduced either by Cropping or by 'Resizing on Export'
Looks like a bug in LR2.6
Message was edited by: V64
PS I am using a G5 PowerMac with Tiger OSX

How to count number of vehicles using image processing tools in LabVIEW

anyone can give me idea that how to do counting of vehicles using image processing tools

Hello,
if camera is stationary, first take an image of the background. Then subtract each acquired image from the reference image. Limit the region of interest - build a mask of the area, where you want to detect vehicles. Use only the pixels that are under the mask for further processing. You probably would need to do some morphological operations (for example dilate) to make the detection more noise-free...
Maybe you could get more reference images (different time of day) and compare the average intensities of the acquired and the reference image to select the best image for subtraction.
You could then probably just count the numer of objects to get the number of vehicles.
You can perhaps also use optical flow to track the vehicles, but you would need to compute some features for example strong corners for each vehicle (check good features to track, http://docs.opencv.org/modules/imgproc/doc/feature_detection.html). Or you can use the new mean-shift tracking library (Labview 2013).
Hope this helps a bit.
Best regards,
K
https://decibel.ni.com/content/blogs/kl3m3n
"Kudos: Users may give one another Kudos on the forums for posts that they found particularly helpful or insightful."

Adobe Premiere Elements 7 - Selecting Multiple Still Images for Time Stretch

Hi,
I have Adobe Premiere Elemetns 7. I would like to be able to select multiple still images on the timeline so that I can timestretch them all at the same time.
I understand that you can do this when you drag the photos over to the sceneline, then get the dialog box that asks for the time duration or transition duration. I would like to do this after they have been placed on the timeline though.
I would like to put say an hour of music on the music line, then drag over say 400 photos, then timestretch the photos such that thier time matches the music timeline. Smartsound does not seem to find the music on my computer to do this, I would like to use my own music.
Any help would be appreciated, thanks.

Tonight why don't you download the free 30 tryout of Premiere Elements 8, check out the feature of interest in particular, and determine if it is worth it. Check out it's stability in your computer environment. You do not have to uninstall Premiere Elements 7. When you install Premiere Elements 8, the installation process detects prior versions and tells you that you do not have to uninstall them, just use one at a time.
Depending on how things go, get on the phone to Adobe Customer Service Monday morning and be pleasant but determined, express your need for the new feature(s), and request an exchange, the new for the old. As a last resort, request your money back for version 7.
Please update us on your progress. But, in the back of your mind, keep the old thought of "be careful what you wish for". You may win one with the duration feature but lose some ground with stability and other features.
ATR

Crashes consistently when control clicking a selected object

CS4 InDesign crashes consistently when control clicking a selected object. Preferences have been reloaded, the program has been reinstalled, all without any effect towards this issue. Any suggestions?

Yeah, it was InDesign Hangs when right clicking on graphic.
There was a lot of head-scratching and the rather unsatisfying conclusion was when the OP removed ancient applications that might have been a choice for "Edit Original," then the problem went away.
I guess the conclusion is that right-clicking on an image iterates over the possible apps that can open an image (for Edit With and Edit Original) and does [something], and for some reason that [something] was hanging. Not clear what the app was. But presumably if you right click the file in the Finder and look at the list provided by Open With, it is similar.
Or you could try the suggestions I offered to the OP in that thread that it looks like he never used.

Image Processing in Bridge lost PSD originals HELP!

I am somewhat new to using Adobe Bridge CS4 super frequently, I have been processing batches of images mostly using the 'Image Process' function under tools>photoshop>image processing. I was using it to watermark my photos and size them down. It worked great, did everything I wanted it too and made it's own JPEG folder with all my processed images. HOWEVER I just discovered that when I process them it is somehow is taking the original image and flattening it so it looks like a JPEG even though the file still thinks it's a PSD file. The size is small and all the layers are gone, basically it looks EXACTLY like the JPEG file I'd just made but it's the original file and it's still a PSD (in theory!). I've been racking my brain trying to figure out when I'm doing wrong here! Been all over the internet trying to find a similar situation and I've had no luck. Any thoughts? I'd really appreciate the help. These particular photos are ready to go to print, but I've got my watermark on them and can't exactly remove the layer that isn't there anymore! HELP
Oona

Yes I was converting images from PSD to JPEG with the image processing but I was running an action (within the same dialog box) to make the file sizes much smaller for easy upload to the web? Does running an action affect the original as well as the processed images?

Image Processing Performance Issue | JAI

I am processing TIFF images to generate several JPG files out of it after applying image processing on it.
Following are the transformations applied:
1. Read TIFF image from disk. The tiff is available in form of a PlanarImage object
2. Scaling
     /* Following is the code snippet */
     PlanarImage origImg;
     ParameterBlock pb = new ParameterBlock();
     pb.addSource(origImg);
     pb.add(scaleX);
     pb.add(scaleY);
     pb.add(0.0f);
     pb.add(0.0f);
     pb.add(Interpolation.getInstance(Interpolation.INTERP_BILINEAR));
     PlanarImage scaledImage = JAI.create("scale", pb);3. Convertion of planar image to buffered image. This operation is done because we need a buffered image.
     /* Following is the code snippet used */
     bufferedImage = planarImage.getAsBufferedImage();4. Cropping
     /* Following is the code snippet used */
     bufferedImage = bufferedImage.getSubimage(artcleX, artcleY, 302, 70);The performance bottle neck in the above algorithm is step 3 where we convert the planar image to buffered image before carrying out cropping.
The operation typically takes about 1120ms to complete and considering the data set I am dealing with this is a very expensive operation. Is there an
alternate to the above mentioned approach?
I presume if I can carry out the operation mentioned under step 4 above on a planr image object instead of buffered image, I will be able to save
considerable processing time as in this case step 3 won't be required. (and that seems like the bottle neck). I have also noticed that the processing
time of the operation mentioned in step 3 above is proportional to the size of the planar image object.
Any pointers around this would be appreciated.
Thanks,
Anurag
Edited by: anurag.kapur on Oct 4, 2007 10:17 PM
Edited by: anurag.kapur on Oct 4, 2007 10:17 PM

It depends on whether you want to display the data or not.
PlanarImage (the subclass of all renderedOps) has a method that returns a Graphics object you can use to draw on the image. This allows you to do this like write on an image.
PlanarImage also has a getAsBufferedImage that will return a copy of the data in a format that can be used to write to Graphics objects. This is used for simply drawing processed images to a display.
There is also a widget called ImageCanvas (and ScrollingImagePanel) shipped with JAI (although it is not a committed part of the API). These derive from awt.Canvas/Panel and know how to render RenderedImage instances. This may use less copying/memory then getting the data as a BufferedImage and drawing it via a Graphics Object. I can't say for sure though as I have never used them.
Another way may be to extend JComponent (or another class) and customize it to use calls to PlanarImage/RenderedOp instances directly. This can hep with large tiled images when you only want to display a small portion.
matfud

Image Processing Cells Manipulation

Hi Guys,
I am working on cells manipulation. Due to the nature of image processing which scans from a top-down-left to right approach, i am unable to fix a index number on the specific cell which I required this information in order to manipulate the cells as my command. The image processing will be running throughout the programme. As attached is the picture of the Imaq count objects i am using.
On a side note, just want to ask a biology-related experiment if anyone encounter the same issue before, why is a cell easily stuck onto the surface as this action prevents the cells from being trapped once it get stuck on the surface of the cover slip.
Thank you in advance,
Scott
Attachments:
Image Processing.png ‏227 KB

Hello,
yes I understand your problem. But it seems to me that the scan direction has no effect on this... What if the scan direction was from bottom-up, left-to right and the cell flows in from the left bottom corner? You would have the same problem...
Or do new cells flow into FOV of the camera only from top-left corner? Could you count the number of objects and linearly increment the indexes of your cells? For example, the first cell that comes into the FOV of the camera has index 0, and when the next cell is introduced, the first cell will have an incremented index that equals 1. And so on...
But if the new cells come into the FOV of the camera randomly from left, right, bottom, top, etc... it would be more difficult. What you could do is calculate some parameters (check particle measurements in NI Vision Concepts) for the cell you want to manipulate (at the time when you are sure this is the correct cell) and then compare these parameters with the cells on every subsequent frame. You can build a feature vector of these parameters and use classification tools. When you classify the cell, then you would have no problems manipulating it.
If your cell changes shape dynamically, then I do not see a way to do this.
Best regards,
K
https://decibel.ni.com/content/blogs/kl3m3n
"Kudos: Users may give one another Kudos on the forums for posts that they found particularly helpful or insightful."

Image processing doesn't show

Hi!
I am trying to do image processing, where it will detect the object and box it up when detected.
However, I did not manage to detect the object, which in this case, a masking tape.
Can anyone tell me what is wrong and how to solve it?
Below is the attached VI that I have done.
Attachments:
multicam+image processing.vi ‏106 KB

No. This is just for testing purpose. I don't have the actual image as it is for an obstacle in a competition.
However, the obstacle is also a ring as well.
I just found a way to detect the object.
I used geometric matching instead of pattern matching, but it was able to detect other things such as my laptop as well.
Is there a way to detect the image and change the diameter of the ring so that it is able to detect other rings with a larger diameter?
Thanks for your help.
Attached below are the changes i have made and the images it detected.
Attachments:
multicam+image processing.vi ‏110 KB
correct image.png ‏455 KB
wrong image.png ‏499 KB

Image Processing (JAI-API) Instalation problem

I am developing the software in Image processing (remote sensing). I am facing the following problem when i run the program.
C:\java_ex>javac SimpleJAITest.java
SimpleJAITest.java:23: cannot resolve symbol
symbol : class ScrollingImagePanel
location: class SimpleJAITest
ScrollingImagePanel panel1, panel2;
^
SimpleJAITest.java:36: cannot resolve symbol
symbol : class ScrollingImagePanel
location: class SimpleJAITest
panel1 = new ScrollingImagePanel(loadImage, 300, 300);
^
SimpleJAITest.java:78: cannot resolve symbol
symbol : class ScrollingImagePanel
location: class SimpleJAITest
panel2 = new ScrollingImagePanel(outImage, 300, 300);
^
Note: SimpleJAITest.java uses or overrides a deprecated API.
Note: Recompile with -deprecation for details.
3 errors
Please send the information regarding installation of Java Advance Imaging kit
and link to download JAI API
Also send the solution of this problem

C:\java_ex>javac SimpleJAITest.java -Xlint:deprecation
SimpleJAITest.java:23: cannot find symbol
symbol : class ScrollingImagePanel
location: class SimpleJAITest
ScrollingImagePanel panel1, panel2;
^
SimpleJAITest.java:29: warning: [deprecation] set(java.lang.Object,java.lang.Str
ing) in javax.media.jai.ParameterBlockJAI has been deprecated
loadPB.set(argv[0], "hs");
^
SimpleJAITest.java:36: cannot find symbol
symbol : class ScrollingImagePanel
location: class SimpleJAITest
panel1 = new ScrollingImagePanel(loadImage, 300, 300);
^
SimpleJAITest.java:39: warning: [deprecation] show() in java.awt.Window has been
deprecated
window1.show();
^
SimpleJAITest.java:78: cannot find symbol
symbol : class ScrollingImagePanel
location: class SimpleJAITest
panel2 = new ScrollingImagePanel(outImage, 300, 300);
^
SimpleJAITest.java:81: warning: [deprecation] show() in java.awt.Window has been
deprecated
window2.show();
^
SimpleJAITest.java:87: warning: [deprecation] set(java.lang.Object,java.lang.Str
ing) in javax.media.jai.ParameterBlockJAI has been deprecated
savePB.set(argv[1], "filename");
^
SimpleJAITest.java:88: warning: [deprecation] set(java.lang.Object,java.lang.Str
ing) in javax.media.jai.ParameterBlockJAI has been deprecated
savePB.set(argv[2], "format");
^
3 errors
5 warnings

General Question Regarding Image Processing

Hi All,
I need a suggestion regarding image processing and this is the best place to get best advise.
we need an image processing utility for our web processing.
requirements are as described below:
we have a e commerce based application where we need to display product images which we are currently displaying successfully.
now we have to provide user with image processing functionality like user can zoom image can flip image can rotate image.
what we want like when user click on zoom we can generate a dynamic image of that region based on a single source of image and can provide zooming functionality.
more over company requirements is to go for only open source solution [:-)]
we tried some open source solutions but due to the in house E-Commerce framework constraints we not able to integrate them,.
can any one point me to any open source java based library so that we can use that to provide solution or do we need some other approach.
Here is a link for a image zooming example hough this is highly professional solution using Adobe Scene7 but we want to implement something like in image zooming
[Zoom Demo|http://s7d2.scene7.com/s7ondemand/zoom/flasht_zoom.jsp?company=S7Web&sku=AnthroISwebDemo&config=S7Web/AnthroISwebDemo&zoomwidth=500&zoomheight=500&viewer=/skins/S7Web/SWFs/loaders/genericzoomLfour.swf&vc=codeRoot%3D%2Fis-viewers351%2Fflash%2F]
any help in this regard will be much appreciated.
Thanks in advance
-Umesh

It is never safe to assume that any allocation was successful, and while it's incredibly unlikely that you're running into any such situation, it's entirely possible for a formal protocol to declare that a given message send should return immediately without waiting around:
http://developer.apple.com/documentation/Cocoa/Conceptual/ObjectiveC/Articles/ch apter13_section_8.html#//appleref/doc/uid/TP30001163-CH9-BAJIGHAF
An "impression" doesn't prove much unfortunately, so I'd recommend getting friendly with the debugger to see what's really going on.

Over 2 to select object in image processing

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