NaviTrack Tutorial:Integrating:Passing image data - Revision history

Hliu at 14:48, 15 June 2007

2007-06-15T14:48:19Z

2007-06-15T14:46:49Z

2007-06-14T21:34:37Z

Testing

2007-06-14T20:15:37Z

Modify MyTutorialSink and MyTutorialModule

2007-06-14T19:54:14Z

Modify MyTutorialModule

2007-06-14T19:43:01Z

2007-06-14T19:13:13Z

Overview for passing image data

2007-06-14T16:23:37Z

Modify MyTutorialSink and MyTutorialModule

2007-05-25T13:42:45Z

pushpos.cxx

2007-05-25T13:42:29Z

@@ Line 267: / Line 267: @@
 Currently, NaviTrack has no capability to recover this kind of errors.
-==Notes==
+=Notes=
-If you don't have a good viewer for pgm imges, try to download and install ImageJ:
+If you don't have a good viewer for '''pgm''' imges on your machine, try to download and install ImageJ:
 http://rsb.info.nih.gov/ij/download.html
 Back to [[NaviTrack_Tutorial:Integrating_into_your_application|Integrating into your application]].

@@ Line 266: / Line 266: @@
 and packet loss causes inconsistency between data size information in header and actual data size.
 Currently, NaviTrack has no capability to recover this kind of errors.
 Back to [[NaviTrack_Tutorial:Integrating_into_your_application|Integrating into your application]].

@@ Line 248: / Line 248: @@
 In terminal 2 (receiving side: pullimage)
-  $ ./pullimage tutorial_source.xml
+  $ ./pullimage tutorial_sink.xml
 =Current Probelms on Image Transfer using NaviTrack=

@@ Line 114: / Line 114: @@
      int height;
-MyTutorialSink.cxx:
+MyTutorialSink.cxx (basic idea):
    void MyTutorialSink::onEventGenerated( Event& event, Node& generator)
+   {
@@ Line 124: / Line 124: @@
          width  = event.getAttribute(std::string("xsize"),0);
          height = event.getAttribute(std::string("ysize"),0);
+       }
      else

@@ Line 15: / Line 15: @@
 =Sending side=
 ==Modify MyTutorialModule==
-To send data through NaviTrack, it is necessary to generate a new event, which contains the data.
+To send data through NaviTrack, a new event is created.
-The following code is implemented into MyTutorialModule to be called from your application.
+The following code shows a basic idea of implementation:
    void MyTutorialModule::setImage(Image& img, int w, int h)
+   {
@@ Line 27: / Line 28: @@
          event.timeStamp();
          source->updateObservers( event );
+       }
+   }

@@ Line 1: / Line 1: @@
 =Overview for passing image data=
-You can pass image data from one application to another through NaviTrack in almost same way as passing coordinate data.
+NaviTrack have a capability to send any C++ data types through NaviTrack data stream.
-You can use Image class in NaviTrack to image transfer. This class has a few member variables
+For an image transfer, NaviTrack has already had a "Image" class to pass image data.
-including image size and image itself, as well as memberfunctions to serialize image data.
+This class has a few member variables including image size and image itself,
 Serialized image data is pushed into NaviTrack data flow as an event, and transfered to
 other nodes.

@@ Line 76: / Line 76: @@
          height = 0;
+       }
+   }

@@ Line 27: / Line 27: @@
+   }
-==pushpos.cxx==
+==pushimage.cxx==
 The core part of image sending would be like following code:

← Older revision		Revision as of 13:42, 25 May 2007
Line 1:		Line 1:
		+	=Overview for passing image data=
		+
	You can pass image data from one application to another through NaviTrack in almost same way as passing coordinate data.		You can pass image data from one application to another through NaviTrack in almost same way as passing coordinate data.
		+
		+	You can use Image class in NaviTrack to image transfer. This class has a few member variables
		+	including image size and image itself, as well as memberfunctions to serialize image data.
		+	Serialized image data is pushed into NaviTrack data flow as an event, and transfered to
		+	other nodes.
		+
		+	Image class is defined in include/OpenTracker/types/Image.h and src/input/types/Image.cxx.

	=Sending side=		=Sending side=