Difference: ProsilicaCapture (4 vs. 5)

Revision 52006-11-24 - BradAtcheson

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META TOPICPARENT name="PsmSpace"

Guide to Using dcam_capture

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 The following modes are available in dcam_capture, the API, and our custom Prosilica Recorder application:

  • rgb24: 3-channel colour image (demosaicked)
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  • mono8: 1-channel raw sensor data. You can clearly see the Bayer pattern on these images, as "green" pixels are much brighter. The white balance settings have no effect in this mode.
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  • mono8: 1-channel raw sensor data. You can clearly see the bayer pattern on these images, as alternate (green) pixels are very different. The white balance settings have no effect in this mode.
 
  • raw8: 1-channel image, subject to adjustment by white balance.

16-bit versions of the mono and raw modes are also available, although only about 10 bits are reliable. Note that the mono and raw modes appear to have been mixed up - if you want pure sensor data, use mono instead of raw.

The Prosilica-supplied viewer application's raw mode is also inconsistent with those of the API (and dcam_capture and Prosilica Recorder). Instead of a raw mode, it provides a "bayer" mode which returns 3-channel images. This appears to be some sort of RGB colour mode, and is definitely not raw sensor data, despite the misleading name.

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When using 2x2 binning then only the mono mode is available. This will eliminate any bayer pattern artefacts, as groups of 4 pixels are summed to produce a single value. You will have to reduce the exposure time (or shrink the aperture) appropriately.
 Incidentally, the sensor's bayer pattern is ordered such that the top-left pixel is a red one.
 
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