Capturing image from webcam in java

Question

How can I continuously capture images from a webcam   I want to experiment with object recognition  by maybe using java media framework     I was thinking of creating two threads  one thread    Node 1  capture live image Node 2  save image as  1 jpg  Node 3  wait 5 seconds Node 4  repeat      other thread    Node 1  wait until image is captured Node 2  using the  1 jpg  get colors from every pixle Node 3  save data in arrays Node 4  repeat

User · Answer

Java usually doesn t like accessing hardware  so you will need a driver program of some sort  as goldenmean said   I ve done this on my laptop by finding a command line program that snaps a picture   Then it s the same as goldenmean explained  you run the command line program from your java program in the takepicture   routine  and the rest of your code runs the same   Except for the part about reading pixel values into an array  you might be better served by saving the file to BMP  which is nearly that format already  then using the standard java image libraries on it    Using a command line program adds a dependency to your program and makes it less portable  but so was the webcam  right

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http   grack com downloads school enel619 10 report java media framework html  Using the Player with Swing  The Player can be easily used in a Swing application as well   The following code creates a Swing-based TV capture program with the video output displayed in the entire window   import javax media    import javax swing    import java awt    import java net    import java awt event    import javax swing event     public class JMFTest extends JFrame       Player  player      JMFTest             addWindowListener  new WindowAdapter                 public void windowClosing  WindowEvent e                      player stop                     player deallocate                     player close                    System exit  0                                        setExtent  0  0  320  260            JPanel panel    JPanel getContentPane            panel setLayout  new BorderLayout              String mediaFile    vfw   1           try               MediaLocator mlr   new MediaLocator  mediaFile                 player   Manager createRealizedPlayer  mlr                if   player getVisualComponent      null              panel add  Center    player getVisualComponent                 if   player getControlPanelComponent      null              panel add  South    player getControlPanelComponent                       catch  Exception e                System err println   Got exception     e                         public static void main String   args            JMFTest jmfTest   new JMFTest            jmfTest show

User · Answer

There s a pretty nice interface for this in processing  which is kind of a pidgin java designed for graphics  It gets used in some image recognition work  such as that link   Depending on what you need out of it  you might be able to load the video library that s used there in java  or if you re just playing around with it you might be able to get by using processing itself

User · Answer

This JavaCV implementation works fine  Code  import org bytedeco javacv    import org bytedeco opencv opencv core IplImage   import java io File   import static org bytedeco opencv global opencv core cvFlip  import static org bytedeco opencv helper opencv imgcodecs cvSaveImage   public class Test implements Runnable       final int INTERVAL   100    you may use interval     CanvasFrame canvas   new CanvasFrame  quot Web Cam quot         public Test             canvas setDefaultCloseOperation javax swing JFrame EXIT ON CLOSE              public void run              new File  quot images quot   mkdir             FrameGrabber grabber   new OpenCVFrameGrabber 0      1 for next camera         OpenCVFrameConverter ToIplImage converter   new OpenCVFrameConverter ToIplImage            IplImage img          int i   0          try               grabber start                 while  true                    Frame frame   grabber grab                     img   converter convert frame                      the grabbed frame will be flipped  re-flip to make it right                 cvFlip img  img  1     l-r   90 degrees steps anti clockwise                    save                 cvSaveImage  quot images quot    File separator    i       quot -aa jpg quot   img                    canvas showImage converter convert img                     Thread sleep INTERVAL                           catch  Exception e                e printStackTrace                         public static void main String   args            Test gs   new Test            Thread th   new Thread gs           th start             There is also post on configuration for JavaCV You can modify the codes and be able to save the images in regular interval and do rest of the processing you want

User · Answer

I believe the web-cam application software which comes along with the web-cam  or you native windows webcam software can be run in a batch script windows dos script  after turning the web cam on i e  if it needs an external power supply   In the bacth script   u can add appropriate delay to capture after certain time period  And keep executing the capture command in loop   I guess this should be possible  -AD

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You can try Marvin Framework  It provides an interface to work with cameras  Moreover  it also provides a set of real-time video processing features  like object tracking and filtering   Take a look   Real-time Video Processing Demo  http   www youtube com watch v D5mBt0kRYvk  You can use the source below  Just save a frame using MarvinImageIO saveImage   every 5 second   Webcam video demo   public class SimpleVideoTest extends JFrame implements Runnable       private MarvinVideoInterface    videoAdapter      private MarvinImage             image      private MarvinImagePanel        videoPanel       public SimpleVideoTest            super  Simple Video Test            videoAdapter   new MarvinJavaCVAdapter            videoAdapter connect 0           videoPanel   new MarvinImagePanel            add videoPanel           new Thread this  start            setSize 800 600           setVisible true              Override     public void run             while true                  Request a video frame and set into the VideoPanel             image   videoAdapter getFrame                videoPanel setImage image                       public static void main String   args            SimpleVideoTest t   new SimpleVideoTest            t setDefaultCloseOperation JFrame EXIT ON CLOSE             For those who just want to take a single picture   WebcamPicture java  public class WebcamPicture       public static void main String   args            try              MarvinVideoInterface videoAdapter   new MarvinJavaCVAdapter                videoAdapter connect 0               MarvinImage image   videoAdapter getFrame                MarvinImageIO saveImage image     res webcam picture jpg              catch MarvinVideoInterfaceException e               e printStackTrace

User · Answer

Recommand using FMJ for multimedia relatived java app

User · Answer

I have used JMF on a videoconference application and it worked well on two laptops  one with integrated webcam and another with an old USB webcam  It requires JMF being installed and configured before-hand  but once you re done you can access the hardware via Java code fairly easily

User · Answer

http   grack com downloads school enel619 10 report java media framework html  Using the Player with Swing  The Player can be easily used in a Swing application as well   The following code creates a Swing-based TV capture program with the video output displayed in the entire window   import javax media    import javax swing    import java awt    import java net    import java awt event    import javax swing event     public class JMFTest extends JFrame       Player  player      JMFTest             addWindowListener  new WindowAdapter                 public void windowClosing  WindowEvent e                      player stop                     player deallocate                     player close                    System exit  0                                        setExtent  0  0  320  260            JPanel panel    JPanel getContentPane            panel setLayout  new BorderLayout              String mediaFile    vfw   1           try               MediaLocator mlr   new MediaLocator  mediaFile                 player   Manager createRealizedPlayer  mlr                if   player getVisualComponent      null              panel add  Center    player getVisualComponent                 if   player getControlPanelComponent      null              panel add  South    player getControlPanelComponent                       catch  Exception e                System err println   Got exception     e                         public static void main String   args            JMFTest jmfTest   new JMFTest            jmfTest show

User · Answer

Java usually doesn t like accessing hardware  so you will need a driver program of some sort  as goldenmean said   I ve done this on my laptop by finding a command line program that snaps a picture   Then it s the same as goldenmean explained  you run the command line program from your java program in the takepicture   routine  and the rest of your code runs the same   Except for the part about reading pixel values into an array  you might be better served by saving the file to BMP  which is nearly that format already  then using the standard java image libraries on it    Using a command line program adds a dependency to your program and makes it less portable  but so was the webcam  right

User · Answer

JMyron is very simple for use  http   webcamxtra sourceforge net   myron   new JMyron    myron start imgw  imgh   myron update    int   img   myron image

User · Answer

There s a pretty nice interface for this in processing  which is kind of a pidgin java designed for graphics  It gets used in some image recognition work  such as that link   Depending on what you need out of it  you might be able to load the video library that s used there in java  or if you re just playing around with it you might be able to get by using processing itself

User · Answer

I used Webcam Capture API   u can download from this http   webcam-capture sarxos pl           webcam   Webcam getDefault            webcam open             if  webcam isOpen        if web cam open              BufferedImage image   webcam getImage                JLabel imageLbl   new JLabel                imageLbl setSize 640  480                 show captured image             imageLbl setIcon new ImageIcon image                 int showConfirmDialog   JOptionPane showConfirmDialog null  imageLbl   Image Viewer   JOptionPane YES NO OPTION  JOptionPane QUESTION MESSAGE  new ImageIcon                    if  showConfirmDialog    JOptionPane YES OPTION                    JFileChooser chooser   new JFileChooser                    chooser setDialogTitle  Save Image                    chooser setFileFilter new FileNameExtensionFilter  IMAGES ONLY    png    jpeg    jpg       this file extentions are shown                 int showSaveDialog   chooser showSaveDialog this                   if  showSaveDialog    0                       if pressed  Save  button                     String filePath   chooser getCurrentDirectory   toString   replace                                 String fileName   chooser getSelectedFile   getName      get user entered file name to save                     ImageIO write image   PNG   new File filePath         fileName     png

User · Answer

Here is a similar question with some - yet unaccepted - answers  One of them mentions FMJ as a java alternative to JMF

User · Answer

There s a pretty nice interface for this in processing  which is kind of a pidgin java designed for graphics  It gets used in some image recognition work  such as that link   Depending on what you need out of it  you might be able to load the video library that s used there in java  or if you re just playing around with it you might be able to get by using processing itself

User · Answer

FMJ can do this  as can the supporting library it uses  LTI-CIVIL   Both are on sourceforge

User · Answer

Some time ago I ve created generic Java library which can be used to take pictures with a PC webcam  The API is very simple  not overfeatured  can work standalone  but also supports additional webcam drivers like OpenIMAJ  JMF  FMJ  LTI-CIVIL  etc  and some IP cameras   Link to the project is https   github com sarxos webcam-capture  Example code  take picture and save in test jpg    Webcam webcam   Webcam getDefault    webcam open    BufferedImage image   webcam getImage    ImageIO write image   JPG   new File  test jpg       It is also available in Maven Central Repository or as a separate ZIP which includes all required dependencies and 3rd party JARs

User · Answer

I believe the web-cam application software which comes along with the web-cam  or you native windows webcam software can be run in a batch script windows dos script  after turning the web cam on i e  if it needs an external power supply   In the bacth script   u can add appropriate delay to capture after certain time period  And keep executing the capture command in loop   I guess this should be possible  -AD

User · Answer

Here is a similar question with some - yet unaccepted - answers  One of them mentions FMJ as a java alternative to JMF

User · Answer

Try using JMyron How To Use Webcam Using Java  I think using JMyron is the easiest way to access a webcam using java  I tried to use it with a 64-bit processor  but it gave me an error  It worked just fine on a 32-bit processor  though

User · Answer

Recommand using FMJ for multimedia relatived java app

User · Answer

Some time ago I ve created generic Java library which can be used to take pictures with a PC webcam  The API is very simple  not overfeatured  can work standalone  but also supports additional webcam drivers like OpenIMAJ  JMF  FMJ  LTI-CIVIL  etc  and some IP cameras   Link to the project is https   github com sarxos webcam-capture  Example code  take picture and save in test jpg    Webcam webcam   Webcam getDefault    webcam open    BufferedImage image   webcam getImage    ImageIO write image   JPG   new File  test jpg       It is also available in Maven Central Repository or as a separate ZIP which includes all required dependencies and 3rd party JARs

User · Answer

I have used JMF on a videoconference application and it worked well on two laptops  one with integrated webcam and another with an old USB webcam  It requires JMF being installed and configured before-hand  but once you re done you can access the hardware via Java code fairly easily

User · Answer

This JavaCV implementation works fine  Code  import org bytedeco javacv    import org bytedeco opencv opencv core IplImage   import java io File   import static org bytedeco opencv global opencv core cvFlip  import static org bytedeco opencv helper opencv imgcodecs cvSaveImage   public class Test implements Runnable       final int INTERVAL   100    you may use interval     CanvasFrame canvas   new CanvasFrame  quot Web Cam quot         public Test             canvas setDefaultCloseOperation javax swing JFrame EXIT ON CLOSE              public void run              new File  quot images quot   mkdir             FrameGrabber grabber   new OpenCVFrameGrabber 0      1 for next camera         OpenCVFrameConverter ToIplImage converter   new OpenCVFrameConverter ToIplImage            IplImage img          int i   0          try               grabber start                 while  true                    Frame frame   grabber grab                     img   converter convert frame                      the grabbed frame will be flipped  re-flip to make it right                 cvFlip img  img  1     l-r   90 degrees steps anti clockwise                    save                 cvSaveImage  quot images quot    File separator    i       quot -aa jpg quot   img                    canvas showImage converter convert img                     Thread sleep INTERVAL                           catch  Exception e                e printStackTrace                         public static void main String   args            Test gs   new Test            Thread th   new Thread gs           th start             There is also post on configuration for JavaCV You can modify the codes and be able to save the images in regular interval and do rest of the processing you want

User · Answer

I used Webcam Capture API   u can download from this http   webcam-capture sarxos pl           webcam   Webcam getDefault            webcam open             if  webcam isOpen        if web cam open              BufferedImage image   webcam getImage                JLabel imageLbl   new JLabel                imageLbl setSize 640  480                 show captured image             imageLbl setIcon new ImageIcon image                 int showConfirmDialog   JOptionPane showConfirmDialog null  imageLbl   Image Viewer   JOptionPane YES NO OPTION  JOptionPane QUESTION MESSAGE  new ImageIcon                    if  showConfirmDialog    JOptionPane YES OPTION                    JFileChooser chooser   new JFileChooser                    chooser setDialogTitle  Save Image                    chooser setFileFilter new FileNameExtensionFilter  IMAGES ONLY    png    jpeg    jpg       this file extentions are shown                 int showSaveDialog   chooser showSaveDialog this                   if  showSaveDialog    0                       if pressed  Save  button                     String filePath   chooser getCurrentDirectory   toString   replace                                 String fileName   chooser getSelectedFile   getName      get user entered file name to save                     ImageIO write image   PNG   new File filePath         fileName     png

User · Answer

You can try Java Webcam SDK library also  SDK demo applet is available at link

User · Answer

This kind of goes off of gt ebuddy s answer using JavaCV  but my video output is at a much higher quality then his answer   I ve also added some other random improvements  such as closing down the program when ESC and CTRL C are pressed  and making sure to close down the resources the program uses properly    import java awt event ActionEvent  import java awt event KeyEvent  import java awt event WindowAdapter  import java awt event WindowEvent  import java awt image BufferedImage   import javax swing AbstractAction  import javax swing ActionMap  import javax swing InputMap  import javax swing JComponent  import javax swing JFrame  import javax swing KeyStroke   import com googlecode javacv CanvasFrame  import com googlecode javacv OpenCVFrameGrabber  import com googlecode javacv cpp opencv core IplImage   public class HighRes extends JComponent implements Runnable       private static final long serialVersionUID   1L       private static CanvasFrame frame   new CanvasFrame  Web Cam        private static boolean running   false      private static int frameWidth   800      private static int frameHeight   600      private static OpenCVFrameGrabber grabber   new OpenCVFrameGrabber 0       private static BufferedImage bufImg       public HighRes                    setup key bindings         ActionMap actionMap   frame getRootPane   getActionMap            InputMap inputMap   frame getRootPane   getInputMap JComponent WHEN IN FOCUSED WINDOW            for  Keys direction   Keys values                          actionMap put direction getText    new KeyBinding direction getText                  inputMap put direction getKeyStroke    direction getText                        frame getRootPane   setActionMap actionMap           frame getRootPane   setInputMap JComponent WHEN IN FOCUSED WINDOW  inputMap               setup window listener for close action         frame setDefaultCloseOperation JFrame EXIT ON CLOSE           frame addWindowListener new WindowAdapter                         public void windowClosing WindowEvent e                                stop                                         public static void main String    args                HighRes webcam   new HighRes            webcam start                Override     public void run                 try                        grabber setImageWidth frameWidth               grabber setImageHeight frameHeight               grabber start                while  running                                 final IplImage cvimg   grabber grab                    if  cvimg    null                                            cvFlip cvimg  cvimg  1      mirror                         show image on window                     bufImg   cvimg getBufferedImage                        frame showImage bufImg                                               grabber stop                grabber release                frame dispose                      catch  Exception e                        e printStackTrace                         public void start                 new Thread this  start            running   true             public void stop                 running   false             private class KeyBinding extends AbstractAction            private static final long serialVersionUID   1L           public KeyBinding String text                        super text               putValue ACTION COMMAND KEY  text                       Override         public void actionPerformed ActionEvent e                        String action   e getActionCommand                if  action equals Keys ESCAPE toString       action equals Keys CTRLC toString     stop                else System out println  Key Binding      action                      enum Keys       ESCAPE  Escape   KeyStroke getKeyStroke KeyEvent VK ESCAPE  0        CTRLC  Control-C   KeyStroke getKeyStroke KeyEvent VK C  KeyEvent CTRL DOWN MASK        UP  Up   KeyStroke getKeyStroke KeyEvent VK UP  0        DOWN  Down   KeyStroke getKeyStroke KeyEvent VK DOWN  0        LEFT  Left   KeyStroke getKeyStroke KeyEvent VK LEFT  0        RIGHT  Right   KeyStroke getKeyStroke KeyEvent VK RIGHT  0         private String text      private KeyStroke keyStroke       Keys String text  KeyStroke keyStroke                this text   text          this keyStroke   keyStroke             public String getText                 return text             public KeyStroke getKeyStroke                 return keyStroke              Override     public String toString                 return text

User · Answer

There s a pretty nice interface for this in processing  which is kind of a pidgin java designed for graphics  It gets used in some image recognition work  such as that link   Depending on what you need out of it  you might be able to load the video library that s used there in java  or if you re just playing around with it you might be able to get by using processing itself

User · Answer

FMJ can do this  as can the supporting library it uses  LTI-CIVIL   Both are on sourceforge

User · Answer

I believe the web-cam application software which comes along with the web-cam  or you native windows webcam software can be run in a batch script windows dos script  after turning the web cam on i e  if it needs an external power supply   In the bacth script   u can add appropriate delay to capture after certain time period  And keep executing the capture command in loop   I guess this should be possible  -AD

User · Answer

Try using JMyron How To Use Webcam Using Java  I think using JMyron is the easiest way to access a webcam using java  I tried to use it with a 64-bit processor  but it gave me an error  It worked just fine on a 32-bit processor  though

User · Answer

I have used JMF on a videoconference application and it worked well on two laptops  one with integrated webcam and another with an old USB webcam  It requires JMF being installed and configured before-hand  but once you re done you can access the hardware via Java code fairly easily

User · Answer

You can try Marvin Framework  It provides an interface to work with cameras  Moreover  it also provides a set of real-time video processing features  like object tracking and filtering   Take a look   Real-time Video Processing Demo  http   www youtube com watch v D5mBt0kRYvk  You can use the source below  Just save a frame using MarvinImageIO saveImage   every 5 second   Webcam video demo   public class SimpleVideoTest extends JFrame implements Runnable       private MarvinVideoInterface    videoAdapter      private MarvinImage             image      private MarvinImagePanel        videoPanel       public SimpleVideoTest            super  Simple Video Test            videoAdapter   new MarvinJavaCVAdapter            videoAdapter connect 0           videoPanel   new MarvinImagePanel            add videoPanel           new Thread this  start            setSize 800 600           setVisible true              Override     public void run             while true                  Request a video frame and set into the VideoPanel             image   videoAdapter getFrame                videoPanel setImage image                       public static void main String   args            SimpleVideoTest t   new SimpleVideoTest            t setDefaultCloseOperation JFrame EXIT ON CLOSE             For those who just want to take a single picture   WebcamPicture java  public class WebcamPicture       public static void main String   args            try              MarvinVideoInterface videoAdapter   new MarvinJavaCVAdapter                videoAdapter connect 0               MarvinImage image   videoAdapter getFrame                MarvinImageIO saveImage image     res webcam picture jpg              catch MarvinVideoInterfaceException e               e printStackTrace

User · Answer

I believe the web-cam application software which comes along with the web-cam  or you native windows webcam software can be run in a batch script windows dos script  after turning the web cam on i e  if it needs an external power supply   In the bacth script   u can add appropriate delay to capture after certain time period  And keep executing the capture command in loop   I guess this should be possible  -AD

User · Answer

FMJ can do this  as can the supporting library it uses  LTI-CIVIL   Both are on sourceforge

User · Answer

Java usually doesn t like accessing hardware  so you will need a driver program of some sort  as goldenmean said   I ve done this on my laptop by finding a command line program that snaps a picture   Then it s the same as goldenmean explained  you run the command line program from your java program in the takepicture   routine  and the rest of your code runs the same   Except for the part about reading pixel values into an array  you might be better served by saving the file to BMP  which is nearly that format already  then using the standard java image libraries on it    Using a command line program adds a dependency to your program and makes it less portable  but so was the webcam  right

User · Answer

I have used JMF on a videoconference application and it worked well on two laptops  one with integrated webcam and another with an old USB webcam  It requires JMF being installed and configured before-hand  but once you re done you can access the hardware via Java code fairly easily

User · Answer

FMJ can do this  as can the supporting library it uses  LTI-CIVIL   Both are on sourceforge

User · Answer

Here is a similar question with some - yet unaccepted - answers  One of them mentions FMJ as a java alternative to JMF

User · Answer

This kind of goes off of gt ebuddy s answer using JavaCV  but my video output is at a much higher quality then his answer   I ve also added some other random improvements  such as closing down the program when ESC and CTRL C are pressed  and making sure to close down the resources the program uses properly    import java awt event ActionEvent  import java awt event KeyEvent  import java awt event WindowAdapter  import java awt event WindowEvent  import java awt image BufferedImage   import javax swing AbstractAction  import javax swing ActionMap  import javax swing InputMap  import javax swing JComponent  import javax swing JFrame  import javax swing KeyStroke   import com googlecode javacv CanvasFrame  import com googlecode javacv OpenCVFrameGrabber  import com googlecode javacv cpp opencv core IplImage   public class HighRes extends JComponent implements Runnable       private static final long serialVersionUID   1L       private static CanvasFrame frame   new CanvasFrame  Web Cam        private static boolean running   false      private static int frameWidth   800      private static int frameHeight   600      private static OpenCVFrameGrabber grabber   new OpenCVFrameGrabber 0       private static BufferedImage bufImg       public HighRes                    setup key bindings         ActionMap actionMap   frame getRootPane   getActionMap            InputMap inputMap   frame getRootPane   getInputMap JComponent WHEN IN FOCUSED WINDOW            for  Keys direction   Keys values                          actionMap put direction getText    new KeyBinding direction getText                  inputMap put direction getKeyStroke    direction getText                        frame getRootPane   setActionMap actionMap           frame getRootPane   setInputMap JComponent WHEN IN FOCUSED WINDOW  inputMap               setup window listener for close action         frame setDefaultCloseOperation JFrame EXIT ON CLOSE           frame addWindowListener new WindowAdapter                         public void windowClosing WindowEvent e                                stop                                         public static void main String    args                HighRes webcam   new HighRes            webcam start                Override     public void run                 try                        grabber setImageWidth frameWidth               grabber setImageHeight frameHeight               grabber start                while  running                                 final IplImage cvimg   grabber grab                    if  cvimg    null                                            cvFlip cvimg  cvimg  1      mirror                         show image on window                     bufImg   cvimg getBufferedImage                        frame showImage bufImg                                               grabber stop                grabber release                frame dispose                      catch  Exception e                        e printStackTrace                         public void start                 new Thread this  start            running   true             public void stop                 running   false             private class KeyBinding extends AbstractAction            private static final long serialVersionUID   1L           public KeyBinding String text                        super text               putValue ACTION COMMAND KEY  text                       Override         public void actionPerformed ActionEvent e                        String action   e getActionCommand                if  action equals Keys ESCAPE toString       action equals Keys CTRLC toString     stop                else System out println  Key Binding      action                      enum Keys       ESCAPE  Escape   KeyStroke getKeyStroke KeyEvent VK ESCAPE  0        CTRLC  Control-C   KeyStroke getKeyStroke KeyEvent VK C  KeyEvent CTRL DOWN MASK        UP  Up   KeyStroke getKeyStroke KeyEvent VK UP  0        DOWN  Down   KeyStroke getKeyStroke KeyEvent VK DOWN  0        LEFT  Left   KeyStroke getKeyStroke KeyEvent VK LEFT  0        RIGHT  Right   KeyStroke getKeyStroke KeyEvent VK RIGHT  0         private String text      private KeyStroke keyStroke       Keys String text  KeyStroke keyStroke                this text   text          this keyStroke   keyStroke             public String getText                 return text             public KeyStroke getKeyStroke                 return keyStroke              Override     public String toString                 return text

User · Answer

JMyron is very simple for use  http   webcamxtra sourceforge net   myron   new JMyron    myron start imgw  imgh   myron update    int   img   myron image

User · Answer

You can try Java Webcam SDK library also  SDK demo applet is available at link

User · Answer

Here is a similar question with some - yet unaccepted - answers  One of them mentions FMJ as a java alternative to JMF

User · Answer

Java usually doesn t like accessing hardware  so you will need a driver program of some sort  as goldenmean said   I ve done this on my laptop by finding a command line program that snaps a picture   Then it s the same as goldenmean explained  you run the command line program from your java program in the takepicture   routine  and the rest of your code runs the same   Except for the part about reading pixel values into an array  you might be better served by saving the file to BMP  which is nearly that format already  then using the standard java image libraries on it    Using a command line program adds a dependency to your program and makes it less portable  but so was the webcam  right

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