Differences

This shows you the differences between two versions of the page.

--- lirec:firewire_camera_notes [2009-03-24 16:37] – 161.23.251.227
+++ lirec:firewire_camera_notes [2009-05-08 12:55] (current) – davegriffiths
@@ Line 5: / Line 5: @@
   * [[http://www.theimagingsource.com/|Imaging Source]] DFK 31AF03-Z
-===Howto===
+===Getting it working===
   * After plugging the camera in, you may need to do:
@@ Line 18: / Line 18: @@
   * Use [[http://damien.douxchamps.net/ieee1394/coriander/|Coriander]] to test the camera
-To get an image you have to press the buttons in the following order:
+To get an image working it's a bit picky - you have to press the buttons in the following order:
   - In the services tab click 'Receive' at the top
@@ Line 34: / Line 34: @@
   - In Trigger you should be able to select 30fps
-You can also get OpenCV to read from this mode, but it will get the raw image directly. This is where we might need a debayer algorithm.
+You can also get OpenCV to read from this mode, but it will get the raw image directly.
+===Getting the camera working with OpenCV===
+The caminfo for OpenCV I used for the raw image was as follows (I think Marek has a better way):
+<code>
+static struct caminfo cameras[] =
+{
+   {
+      handle:            NULL,
+      device_identifier: "Imaging Source DFx 31AF03-Z 1940800048",
+      fourcc:            UCIL_FOURCC( 'Y', '8', '0', '0' ),
+      format_size:       { 0, 0, 1024, 768 },
+      window:            "Camera 1",
+      image:             NULL,
+      properties:        camera0_properties,
+      property_count:    sizeof( camera0_properties ) / sizeof( unicap_property_t ),
+      cascade: NULL,
+      storage: NULL,
+   },
+};
+</code>
+===Using OpenCV for the debayering===
+OpenCV has a built in debayering algorithm, as part of it's colour space conversions. The one which works with the lirec camera is:
+<code>cvCvtColor(bayerimage, rgbimage, CV_BayerGB2RGB);</code>
+Where the input is a 1 channel image and the output is 3 channel RGB image.
+==The bayer pattern image, raw data from the camera CCD==
+{{:lirec:bayerpattern.png|}}
+==Converted to RGB==
+{{:lirec:bayerrgb.png|}}