ICP DAS USA IM-30 Manual Do Utilizador

MAVIS IM-30/IM-100 cameras have a sensor that reads pixel value at a 

10bit depth; however, the camera outputs pixel values at an 8bit depth. 

When set for 8bit output, the camera normally uses an internal process to 

convert the 10bit pixel values from the sensor to the 8bit values transmitted 

out of the camera. When making the 10 to 8bit conversion, the internal 

process takes the camera current gain and brightness settings into 

account. 

The MAVIS IM-30/IM-100 camera allows users to use a custom lookup 

table to map the 10bit sensor output to 8bit camera output rather than using 

the internal process. When the custom lookup table is enabled, the gain 

and brightness settings have no effect. The 10 to 8bit conversion is based 

solely on the lookup table. 

The lookup table is essentially just a list of 1024 values. Each value in the 

table represents the 8bit value that will be transmitted out of the camera 

when the sensor reports a particular 10bit value for a pixel. The first number 

in the table represents the 8bit value that will be transmitted out of the 

camera when the sensor reports that a pixel has a value of 0. The second 

number in the table represents the 8bit value that will be transmitted out of 

the camera when the sensor reports that a pixel has a value of 1. The third 

number in the table represents the 8bit value that will be transmitted out of 

the camera when the sensor reports that a pixel has a value of 2. And so 

on. 

The advantage of the lookup table feature is that it allows the user to 

customize the response curve of the camera.   

The graphs below represent th

Figure 1-6 is for a lookup 

table where the values 

e contents of two typical lookup tables.   

are arranged so that the 

output of the camera 

increases linearly as the 

sensor output increases. 

               

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10 

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