ALLIED Vision Technologies Pearleye P-030 LWIR - Manual (Page 34)

Image processing
Pearleye Technical Manual V2.2.1
34
Image processing
This chapter explains the function of the Pearleye P-007 LWIR /
Pearleye P-030 LWIR firmware. It is related to the individual modules of image
processing and shows how the user can control these modules via the serial
interface.
Image processing chain
The uncorrected sensor image from the microbolometer sensor is very inhomo-
geneous and each sensor element has its own characteristic curve. Therefore an
individual adjustment of each pixel is necessary. The standard firmware of the
Pearleye P-007 LWIR / Pearleye P-030 LWIR contains a chain of correction
modules which perform these tasks in real time.
Each module can have various parameters which control the operation mode. In
the drawing above and as well within the text of this manual, these parameters
are always marked by
Courier bold font in order to highlight them to be
parameters (or commands) adjustable via the serial interface.
For fast access all available correction data (e.g. reference images for the two-
point correction and bad pixel correction control data) are copied from the non-
volatile flash memory into a correction data memory (SDRAM) when starting the
camera. From this point the correction data is available for real-time image cor-
rection. The image data from the camera head is shifted through the correction
Figure 11: Image processing chain: Pearleye P-007 LWIR / Pearleye P-030 LWIR