Point Grey Flea3 GigE - Page 88

Point Grey Flea3 GigE Technical Reference 8 Flea3 GigE Attributes
The following frame-specific information can be provided:
n Timestamp
n Gain
n Shutter
n Brightness
n White Balance
n Frame counter
n Strobe Pattern counter
n GPIOpin state
n ROIposition
If you turned on all possible options the first 40 bytes of image data would contain camera information in the following
format, when accessed using the FlyCapture 2 API:
(assuming unsigned char* data = rawImage.GetData(); and an Image object rawImage):
n data[0] = first byte of Timestamp data
n data[4] = first byte of Gain data
n data[24] = first byte of Frame Counter data
If only Shutter embedding were enabled, then the first 4 bytes of the image would contain Shutter information for that
image. Similarly, if only Brightness embedding were enabled, the first 4 bytes would contain Brightness information.
For monochrome cameras, white balance is still included, but no valid data is provided.
To access embedded information:
n CSRs—FRAME_INFO: 12F8h
Interpreting Timestamp information
The Timestamp format is as follows (some cameras replace the bottom 4 bits of the cycle offset with a 4-bit version of
the Frame Counter):
Cycle_count increments from 0 to 7999, which equals one second.
Second_count increments from 0 to 127.
All counters reset to 0 at the end of each cycle.
Revised 10/29/2013
Copyright ©2010-2013 Point Grey Research Inc.
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