White Balance - FLIR GRASSHOPPER 3 Series Technical Reference

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):
data[0] = first byte of Timestamp data
n
data[4] = first byte of Gain data
n
data[24] = first byte of Frame Counter data
n
If only Exposure embedding were enabled, then the first 4 bytes of the image would contain Exposure 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:
CSRs—FRAME_INFO: 12F8h
n
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.
Interpreting ROI information
The first two bytes are the distance from the left frame border that the region of interest (ROI) is shifted. The next
two bytes are the distance from the top frame border that the ROI is shifted.

8.17 White Balance

White balance is applicable to color models only.
The Grasshopper3 PGE supports white balance adjustment, which is a system of color correction to account for
differing lighting conditions. Adjusting white balance by modifying the relative gain of R, G and B in an image
enables white areas to look "whiter". Taking some subset of the target image and looking at the relative red to
green and blue to green response, the objective is to scale the red and blue channels so that the response is 1:1:1.
2/10/2017
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Grasshopper 3 PGE Technical Reference
8 Grasshopper3 PGE Attributes
77