Guppy PRO Technical Manual
V4.1.2
225
Loading a look-up table into the camera
Loading a look-up table into the camera is done through the GPDATA_BUFFER.
Because the size of the GPDATA_BUFFER is smaller than a complete look-up
table the data must be written in multiple steps.
To load a look-up table into the camera:
1.
Query the limits and ranges by reading LUT_INFO and GPDATA_INFO.
2.
Set EnableMemWR to true (1).
3.
Set AccessLutNo to the desired number.
4.
Set AddrOffset to 0.
5.
Write n look-up table data bytes to GPDATA_BUFFER (n might be lower
than the size of the GPDATA_BUFFER; AddrOffset is automatically
adjusted inside the camera).
6.
Repeat step 5 until all data is written into the camera.
7.
Set EnableMemWR to false (0).
Defect pixel correction
Definition
The defect pixel correction mode allows to correct an image with defect pixels.
Via threshold you can define the defect pixels in an image. Defect pixel
correction is done in the FPGA and defect pixel data can be stored inside the
camera.
DPC = defect pixel correction
WR = write
RD = read
MEM, Mem = memory
Note
Guppy PRO cameras have the gamma feature implemented via
a built-in look-up table. Therefore, you cannot use gamma and
your own look-up table at the same time. Nevertheless, you
may combine a gamma look-up table into your own look-up
table.
Note
When using the LUT feature and the gamma feature pay
attention to the following:
•
gamma ON
look-up table is switched ON also
•
gamma OFF
look-up table is switched OFF also
•
look-up table OFF
gamma is switched OFF also
•
look-up table ON
gamma is switched OFF
