Alkeria NECTA Series - Chunk Data

7. The processing chain 78
RAW
0
+1
+2
-1
-2
x1
x4
MONO 8
MONO
16
SENSOR
Black level CDS Gain Analog Gain
Calibration Horizontal
ROI
ROI composer Light meterBinning
Digital gain Brightness Contrast LUTs
IMAGE
PROCESSING
PRE-PROCESSING
Figure 7.1: Monochrome camera processing chain diagram
Example Code 7.1 | Set LMR starting from x = 256, y = 384, and 512 x 800 pixels wide
device.SetLightMeterROI(256, 384, 512, 800);
7.2 CHUNK DATA
NECTA cameras can optionally transmit a set of additional information along with the acquired image,
that can be used for debugging purposes and data analysis: a frame is identied by its serial number and
time stamp; it can also be associated to the encoder position and the input status captured during its
exposure.
Data are user-selectable by software methods. The bandwidth required is very small; however, it might
reduce the maximum usable line rate, slightly affecting the performance in some high-demanding appli-
cations.
Frame chunk data are generated at the rst line-start event of the frame. When both a frame-start and