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lirec:firewire_camera_notes [2009-03-24 16:38] – 161.23.251.227lirec:firewire_camera_notes [2009-05-08 12:55] (current) – davegriffiths
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   * [[http://www.theimagingsource.com/|Imaging Source]] DFK 31AF03-Z   * [[http://www.theimagingsource.com/|Imaging Source]] DFK 31AF03-Z
  
-===Howto===+===Getting it working===
  
   * After plugging the camera in, you may need to do:   * After plugging the camera in, you may need to do:
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   - In Trigger you should be able to select 30fps   - 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|}} 

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