Detecting object in images

Hi,
how can I detect objects in images using java ?
I need to detect movements of an object in consecutive images exported from a video.
thank you

use PixelGrabber to record a grid of colors then store it in a 2D array and with the next image get another 2D array of colors from the picture and compare the two arrays to see which part of the grid changed. You still will not have a way to tell the difference from the place were the object was and the color of the current object unless you had a image of the place room screen or what ever it is without objects and compared all other images to that one.

Similar Messages

Detecting objects in images

http://richandsian.co.uk/images/testin.png - Input image
http://richandsian.co.uk/images/testout1.png - Output image 1
http://richandsian.co.uk/images/testout2.png - Output image 2
http://richandsian.co.uk/errata/blobdimensions.txt - Object dimensions
Ok, so I'm trying to play with something like OCR that I've written, but very simple. It just looks for groups of connected pixels by thresholding an image and seeing who is connected, then paints each blob a random colour.
When I then spit out details about the height and width of each blob (see object dimensions) I get mostly sensible stuff - characters of width 5x7 for ones like aeuonmcv, etc... and the odd 5x10 you would think might be an h,p,g,d, etc...all good.
However, I have the odd blob that's something bizarre like 55x3 and not an obvious object looking at the image. So I painted all blobs their own colour only if they had a dimension greater than 10.
And this: http://richandsian.co.uk/images/testout3.png is what I got.
Presumably there's a pattern to what I've done, but I can't figure it out, anyone have any ideas? Thanks
Code tarball here: http://richandsian.co.uk/errata/ocr.tar.gz

Hi cs02rm0,
I read the post and am trying to do something similar, is there any chance I could get a look at the code? Many thanks, Ron

How to detect object being touched or not in kinect

Dear all,
i am new bie to kinect programming. i want to build application where camera can detect object touched or not.consider 3 object are placed on table like in set book ; remote & MOUSE . whenever object being picked i wanted to increment paricular item
being counted up. if object kept back count remain same.
Is it possible to check which object being touched?? & increment the count in the particular item section.
if moused picked once increment mount count value by 1 & display on screen.let me know how can i do usinf kinect sensor.
AMPS12

Kinect itself does not provide any type of object recognition. There are third party libraries and tools that you may want to look into that can do that. Kinect will only provide you depth and color information of what the camera sees. We have a body tracking
system so we know where people are. Based on that and if you define target areas, you may be able to deduce things.
Carmine Sirignano - MSFT

Why my image acquisition pci 1409 board could not be detected by matlab image acquisition toolbox?

i have a National Instruments PCI-1409 image acquisition board that works very well
with the software provided by National Instruments, whereas it could
not be detected by matlab image acquisition toolbox when the command
"imaqhwinfo" was executed. I don't know why. the system is XP and
DirectX9.
any of your advice will be greatly appreciated.
thanks
yours sincerely
Jing
[email protected]

Is your matlab image acquisition toolbox DirectX based? If so, NI frame grabber will not work for your matlab image acquisition toolbox because it does not provide WDM or VFW drivers.
Irene He
[email protected]
www.hytekautomation.com

Action script 3: Export object to image with PNG format - make transparent

Hi!
I have a problem in export a object to image .PNG (and make transparent). When i add a object TextField in stage and add effect for my object. Then i export to image with format is .PNG.I use BlendMode.NORMAL properties of BitmapData to draw my image - work done and image is exported.
I use BlendMode.ERASE properties of BitmapData to draw my image - is not word
See more in attact file : BlendMode.ERASE.png, BlendMode.NORMAL.png
Code text effect: \OnlyTextEff\view\textEffs.as and \OnlyTextEff\effects\EnvelopeDistord_2.as
Code export image: \OnlyTextEff\view\textview.as (function name is "exportHandler")
download demo: http://www.mediafire.com/?vgnauwspt8b6x08
Does anyone have a good example or explanation of that ? Thanks.

// that looks like a pretty poor tutorial. but
public function init(e:Event=null):void{
go=new Go(); // you need to declare go
addChild(go);
go.addEventListener(MouseEvent.CLICK,startgame);
public function startgame(e:Event):void{
removeChild(start_mc); // where start_mc is the movieclip of your start screen
addChild(game_mc); // where game_mc is the movieclip of your game

How indesign detects that the images have been modified

Hello,
My problem is that all my images links are seen modified (yellow triangle) while the images don't have been modified.
The modified dates are the same.
All my images are on a unix server and indesign is used on Mac.
How indesign detects that the images have been modified ?

Thank you for your answer.
When you say the time stamp you talk about the modification date in the box link info ?
Because this date is the same on the image and in indesign and when I update the image this date doesn't change.
the only informations that change when I update the links are the import date and the state (modified become ok)

How to show the ellipse found in the IMAQ shape detect to the image

I have come out with the VI which had detected the ellipses. The ellipse result shown in the last part just only shows the number of matches and also the ellipses information. The problem is I wanted the ellipse found shown in the image to show where is the ellipse that detected in the LABVIEW but not only showing me the number of ellipse detected. Because I wanted to know the ellipse detected in the image provided that other shape is also in the image. Sorry for the bad English maybe I don't know use English to state my question correctly. Thank you for the helping I stuck in the last part to complete my task.
PS: I have attach my VI and image that I used in below. The minimum score set it to 990 and it will show the result of 3 numbers of matches. Anyone know how to locate the 3 ellipse in the image? Thank you for the help
Attachments:
oval 1.jpg ‏25 KB
testing.vi ‏51 KB

Uploaded the wrong vi in the previous.
This should have been the one uploaded.
Sorry.
Attachments:
testing_1.vi ‏58 KB

Insane Object Error - Image.cpp

Is any other LV8.2 user having problems with customizing controls?
I have only needed to do this today since the upgrade to 8.2, and am having a hard time. I have yet to come up with an exact method to reproduce this, but it's getting to be a big problem, as LV crashes about 60% of the time when I'm editing controls.
Is this a known issue? I did some digging but didn't find anything specific to my problem. I never had this problem with 7.1 (same hardware in my PC).
Message Edited by Day on 10-10-2006 04:04 PM
Attachments:
Insane Object Error - image.jpg ‏16 KB

I had a similar error message come up in the jump from LV 7.1 to LV 8.0. It would cause a couple of hard crashes of Labview whenever I worked with one particular VI. I found it was related to a wizard lock control that I had created in LV7.1 using the HMI Wizard options of my DSC module. I actually had two such loops in my original program, one behaved, the other caused problems in the upgrade of the VI to LV 8.0.
I discovered this by creating multiple copies of the VI in LV 7.1 and deleting different block diagram elements from each and seeing which opened without error in 8.0 and which caused the problem until I finally discovered the problem piece of code. It was really a divide and conquer technique.
I liked how LV 7.1 HMI wizard automatically created code that I could unlock and modify as I needed. It seems that the HMI wizard was eliminated from the DSC module of LV 8.0 and 8.2. There were several other major changes in the behavior of the DSC module from 7.1 to 8.0 which I am still trying to learn.
If you can discover which control or what piece of code (hopefully it is only one) is causing the problem, perhaps you can delete it in the older file version, upgrade the VI, then recreate it in the newer version VI.

Plz Help!!! Have to convert an paint object to image

Hi.I am new to Jave and am developing an application
which has to send painted shapes(using SWING) to a mail id.
I think it can be done in two steps
1) Converting the paint objects to images.
2} sending the image
However I don't have a clue regarding the first step
and have only a rough idea about the 2nd.
Please suggest a solution.
Thanks

hi,
you can try using the Robot call and calling the screencapture method, giving the the correct parameter values should allow it to get the image you want only, this will return a BufferedImage object, you can search the forums on how to convert a BufferedImage object to an image there are plently of examples floating around.

Detect overlay of image

I want to make an action game. But it seems that is important to detect whether the images touch another.
So, are there any methods in java or any other better way to do that?

What you are describing is called "collision detection".
The web is filled with examples on how to do it.
So just google yourself silly.
shmoove

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

Display an object of Image type or Byte Array

Hi, lets say i got an image stored in the Image format or byte[]. How can i make it display the image on the screen by taking the values in byte array or Image field?

Thanks rahul,
The thing is, i am generating a chart in a servlet
and setting the image in the form of a byte [] to the
view bean ( which is binded to the jsp, springs
framework ). The servlet would return the view bean
to the jsp and in the jsp, i am suppose to print this
byte array so as to give me the image..
I hope this makes sense.. pls help me ou!Well letme see if i got tht right or not,
you are trying to call Your MODEL (Business layer / Spring Container) from a servlet and you are expressing that logic in form of chart (Image) and trying to save it as a byte array in a view bean and you want to print /display that as an image in a jsp (After Servlet fwd / redirect action) which includes other data using a ViewBean.
If this is the case...
As the forwaded JSP can include both image and Textual (hypertext too)..we can try a work around hear...Lets dedicate a Servlet which retreives byte [] from a view bean and gives us an image output. hear is an example and this could be a way.
Prior to that i'm trying to make few assumptions here....
1).The chart image which we are trying to express would of format JPEG.
2).we are trying to take help of<img> tag to display the image from the image generating servlet.
here is my approach....
ViewBean.java:
============
public class ViewBean implements serializable{
byte piechart[];
byte barchart[];
byte chart3D[];
public ViewBean(){
public byte[] getPieChart(){
return(this.piechart);
public byte[] getBarChart(){
return(this.barchart);
public byte[] get3DChart(){
return(this.chart3D);
public void setPieChart(byte piechart[]){
this.piechart = piechart;
public void setBarChart(byte barchart[]){
this.barchart = barchart;
public void set3DChart(byte chart3D[]){
this.chart3D = chart3D;
}ControllerServlet.java:
=================
(This could also be an ActionClass(Ref Struts) a Backing Bean(Ref JSF) or anything which stays at the Controller Layer)
public void doGet(HttpServletRequest request,HttpServletResponse response) throws IOException{
/* There are few different implementations of getting   BeanFactory Resource
In,the below example i have used XmlBeanFactory Object to create an instance of (Spring) BeanFactory */
BeanFactory factory =
new XmlBeanFactory(new FileInputStream("SpringResource.xml"));
//write a Util Logic in your Implementation class using JFreeChart (or some open source chart library) and express the images by returning a byte[]
ChartService chartService =
(GreetingService) factory.getBean("chartService");
ViewBean vb = new ViewBean();
vb.setPieChart(chartService.generatePieChart(request.getParameter("<someparam>"));
vb.setBarChart(chartService.generateBarChart(request.getParameter("<someparam1>"));
vb.set3DChart(chartService.generate3DChart(request.getParameter("<someparam2>"));
chartService = null;
HttpSession session = request.getSession(false);
session.setAttribute("ViewBean",vb);
response.sendRedirect("jsp/DisplayReports.jsp");
}DisplayReports.jsp :
================
<%@ page language="java" %>
<html>
<head>
<title>reports</title>
</head>
<body>
<h1 align="center">Pie Chart </h1>
<center><img src="ImageServlet?req=1" /></center>
<h1 align="center">Bar Chart </h1>
<center><img src="ImageServlet?req=2" /></center>
<h1 align="center">3D Chart</h1>
<center><img src="ImageServlet?req=3" /></center>
</body>
</html>ImageServlet.java
==============
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
       byte buffer[];
        HttpSession session = request.getSession(false);
        ViewBean vb = (ViewBean) session.getAttribute("ViewBean");
        String req = request.getParameter("req");
        if(req.equals("1") == true)
            buffer = vb.getPieChart();
        else if(req.equals("2") == true)
             buffer = vb.getBarChart();
        else if(req.equals("3") == true)
             buffer = vb.get3DChart();
        JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(new ByteArrayInputStream(buffer));
        BufferedImage image =decoder.decodeAsBufferedImage() ;
        response.setContentType("image/jpeg");
        // Send back image
        ServletOutputStream sos = response.getOutputStream();
        JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(sos);
        encoder.encode(image);
    }Note: Through ImageServlet is a Servlet i would categorise it under presentation layer rather to be a part of Controller and added to it all this could be easily relaced by a reporting(BI) server like JasperServer,Pentaho,Actuate................
Hope the stated implementation had given some idea to you....
However,If you want to further look into similar implementations take a look at
http://www.swiftchart.com/exampleapp.htm#e5
which i believe to be a wonderful tutor for such implementations...
However, there are many simple (Open) solutions to the stated problem.. if you are Using MyFaces along with spring... i would recommend usage of JSF Chart Tag which is very simple to use all it requires need is to write a chart Object generating methos inside our backing bean.
For further reference have a look at the below links
http://www.jroller.com/page/cagataycivici?entry=acegi_jsf_components_hit_the
http://jsf-comp.sourceforge.net/components/chartcreator/index.html
NOTE:I've tried it personally using MyFaces it was working gr8 but i had a hardtime on deploying my appln on a Portal Server(Liferay).If you find a workaround i'd be glad to know about it.
& there are many BI Open Source Server Appls that can take care of this work too.(Maintainace wud be a tough ask when we go for this)
For, the design perspective had i've been ur PM i wud have choose BI Server if it was corporate web appln on which we work on.
Hope this might be of some help :)
REGARDS,
RaHuL

Converting objects to images..possible?

hi,
is there a way to convert an object, of my own type, into an image? suppose i wanted to allow the user to draw an image using there mouse and now wanted to convert that into a jpg once saved, can this be done?

When you say "image", do you mean "image file"? If so, you'll be pleased to know that there's lots of source code for saving BufferedImages as JPEGs in the Java2D forum.
Answer provided by Friends of the Water Cooler. Please inform forum admin via the
'Discuss the JDC Web Site' forum that off-topic threads should be supported.

Objects and Images Printing Much Darker When Sent to Press

So, I'm sure this has been addressed multiple times in many other threads, but for the life of me, I can't find one that addresses my specific issues. So here goes...
When producing ads or catalog layouts with drawn objects, be it solid or gradient filled, or when adding color photos to the design, it always happens that everything turns out much darker on their end. It's frustrating and I don't know if it's something I'm not doing, or if it's something in the offset printing process... Advice would be appreciated.
I am currently using ID CS5.5, and am an intermediate to advanced user, but when it comes to color management...I'm lost.
It's disheartening sending out great ads and layouts when they come out so crappy on their end. (PS...forget about asking for proofs, cause I've asked for years on projects like mass catalog printings, and they just don't do it...so I need to work around that). Thanks guys and gals!

its one of those "how long is a piece of string" questions.
as pete said, colour calibration with your monitor may be a factor, but there are many other items to consider, such as:
* the quality of the light in the room in which the monitor is in;
* whether the images being printed are beyond the max ink weight for the paper (an uncoated stock will have a lower max ink weight than a coated stock)
* what RGB-CMYK conversion is being used. to demonstrate this, try this - take an RGB pic, make it CMYK using the SNAP newsprint profile and save it as 1.tiff. then, go back to the original RGB pic and make it CMYK using the COATED FOGRA 39 profile and save it as 2.tiff. now, place both pics into indesign and go to the seps preview and compare the picture qualities side by side.
there are also issues which may be present at the printer's end, but I won't speculate as to what they may or may not be doing. instead, it is worth having a chat to your providers. Providers interested in your work normally take the time to provide as much information as they can.
it seems to me that if images are constantly coming out darker, that the max ink weights for the stocks being printed on are being exceeded. when submitting ads/prints, are you using the ink limit preview in the seps preview panel and checking it against the max ink weight suggested by the publisher or printer?
my buck o'five.
colly

JEditorPane.setPage - detecting that asynchronous image loading is complete

Hi,
I'm using a JEditorPane to load and display an html page of a url by using
setPage(String url) ... and I've added a progress bar to show the user that loading is still occuring.
Currently i'm detecting that the page has finished loaded by listening for the property change event named "page", like this:
    this.viewEditorPane.addPropertyChangeListener(
      new PropertyChangeListener() {
        public void propertyChange(PropertyChangeEvent event) {
          if (event.getPropertyName().equals("page")) {
            loadingProgressBar.setIndeterminate(false);
            System.out.println("... finished loading");
      });I appreciate that images are loaded asynchronously.
So what I'm wondering is how I can detect that all these associated images have also completed loading?
Thanks ... Dougall

if you want to load images synchronously you can use like, (i got it from this forum only)
public class SynchronousHTMLEditorKit extends HTMLEditorKit {
    public SynchronousHTMLEditorKit() {
    public ViewFactory getViewFactory() {
        return new SynchronousImageViewFactory(super.getViewFactory());
    static class SynchronousImageViewFactory implements ViewFactory {
        ViewFactory impl;
        SynchronousImageViewFactory(ViewFactory impl) {
            this.impl = impl;
        public View create(Element elem) {
            View v = impl.create(elem);
            if((v != null) && (v instanceof ImageView)) {
                ((ImageView)v).setLoadsSynchronously(true);
            return v;
}

Detecting object in images

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