Specifications

Image processing
Pearleye Technical Manual V2.0.0
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Correction data
Ex factory camera specific correction data for each correction module are deter-
mined and stored in the camera so that an optimum image quality is available
at the Gigabit Ethernet interface. A PC with a Gigabit Ethernet interface can
transmit the temperature data directly to the main memory or rather to the dis-
play. To reach more exact temperature measurements only an emission factor
correction depending on the surface and material of the object as well as of the
environment temperature within the object scene is necessary at the receiving
end.
Correction sets
In case of high quality requirements with regard to exactness and image quality
it is recommended to determinate ex factory more than one correction data set
by means of which some influence caused by changing operating conditions of
the camera are mostly compensated. Several different correction sets for the
two-point correction are stored inside the camera. By transmitting commands
over the serial interface the user is able to activate (manually or automatically)
the correction set which is most suitable for the actual environment conditions
of the camera.
File system
The Pearleye P-007 LWIR / Pearleye P-030 LWIR camera models are equipped
with a non-volatile data memory (64 MByte flash) which records configuration
and correction data. Due to resource reasons the data is managed in a minimal-
ist file system.
Due to the file system there are the following restrictions:
• Files are identified via one byte. Regarding to its function this file number
is somewhat comparable to the file name (including extension) from the
PC world. Valid file numbers are between 1 (0x01) and 254 (0xFE).
• The file type can be defined via a further byte. It is an optional clustering
feature for files, but it has no relevance for the file identification.
• There is no directory structure. All files are on one single hierarchy level
within the main directory. This results in a maximum possible number of
254 simultaneously stored files, because each file number can only be
allocated once.
Ex factory the camera is usually already equipped with several files, containing
system and correction data. The Pearleye P-007 LWIR / Pearleye P-030 LWIR
don’t use the whole 64 MByte, so that a customer can also use this memory for
own data.