Imperx LYNX User Manual page 105

Example 5 – Digital Shift
The "Digital Shift" feature allows the user to change the group of bits sent to
the camera output and therefore manipulate the camera brightness and
contrast. The internal camera processing of the data is 12 bits. If the camera is
set to output 10 bits of data then the two least significant bits are truncated. In
some cases the user may need to convert from 12 to 10 bit by preserving the 2
least significant bits and truncating the 2 most significant ones. In other
oc casions the user may need to increase the image brightness 2x, 4x, 8x, etc.
Example A. Increasing the image bright
The original camera data is D0 (LSB) to D11 (MSB)
D0 D1 D2 D3
Create a LUT in which the bits are shifted by one to the right.
Modified 12 bit Output Data - (11 bit data + 1 bits shifted right)
0 D0 D1 D2
Example B. Increasing the image brightness 4x:
The original camera data is D0 (LSB) to D11 (MSB)
D0 D1 D2 D3
Create a LUT in which the bits are shifted with two to the right.
Modified 12 bit Output Data - (10 bit data + 2 bits shifted right)
0 0 D0 D1
LYNX Hardware User's Manual
ness 2x:
Input Data - 12 bit
D4 D5 D6 D7
D3 D4 D5 D6
Input Data - 12 bit
D4 D5 D6 D7
D2 D3 D4 D5
105 of 209
D8 D9 D10 D11
D7 D8 D9 D10
D8 D9 D10 D11
D6 D7 D8 D9