background image

 

 

 

Note: 

The PRNU and DSNU depends on exposure, gain, temperature and number of active fiber links. In 

case the above conditions might change during  camera operation, it is advised to pre  calibrate the 

system on several conditions and save them as different user sets. Load the user set if the conditions 

have been changed. User set control is described in the next section. 

3.3

 

User Set Control category 

1

2

3

4

5

6

7

 

Figure 7 : Saving camera parameter configuration

 

 

Eight  user  sets  are  available  for  saving  different  camera  parameter  configurations.  In  addition,  a 

“Default” UserSet is available so it will be possible to revert back to default factory settings.  

1.

 

Selection between the different available user configuration 

Default – Factory settings 

UserSetX - Available user sets in non-volatile memory 

2.

 

Load the configuration of the selected user set 

3.

 

Save the configuration to the selected user set 

4.

 

Selection of the power up configuration 

Non-volatile memory is available for user usage. Data save to this memory space will not be erase 

upon camera power-down.  

5.

 

Execute an erase of the entire user memory on the camera 

6.

 

Selection of the memory page for saving 

7.

 

Execute a save to the selected memory page 

 

 

 

Using the DSNU and PRNU corrections 

Summary of Contents for JetCam

Page 1: ...ems GmbH Geisenhausenerstr 18 81379 Munich Germany 49 89 780 2970 info skyblue de www skyblue de In Great Britain Zerif Technologies Ltd Winnington House 2 Woodberry Grove Finchley London N12 0DR 44 1...

Page 2: ...RE 3 JETCAM CAMERA SIDE VIEW W O LENS 4 FIGURE 4 DARK FIELD CALIBRATION STEPS 5 FIGURE 5 FLAT FIELD CALIBRATION STEPS 6 FIGURE 6 UNIFORM LIGHT SOURCE BEFORE VS AFTER FLAT FIELD CALIBRATION 6 FIGURE 7...

Page 3: ...photo response non uniformities PRNU and or artifacts caused by the illumination and illumination optics These application notes describe how to calibrate the flat field functions and how to use them...

Page 4: ...with the socket electrical connector 3 Insert the fiber cable into the module by firmly pushing each cable into the module until you will hear a click 4 Connect the Power Adaptor to the JetCam power...

Page 5: ...brate It only requires a reference image to be recorded without illumination on the image sensor Follow this steps to perform dark field calibration process 1 For dark field calibration the light shou...

Page 6: ...optimal result Follow this steps to perform flat field calibration process 1 Prepare light source Uniform light should be applied across the sensor This can be achieved by removing the lens and settin...

Page 7: ...lable gain is not sufficient to correct for the difference between the weakest and brightest illuminated pixel segment a flat field cannot be achieved Figure 6 Uniform light source before vs after fla...

Page 8: ...arameter configurations In addition a Default UserSet is available so it will be possible to revert back to default factory settings 1 Selection between the different available user configuration Defa...

Page 9: ...and loading user set parameter configurations for a specific camera using Vision Point application Save User Set 1 Calibrate the desired camera parameters in Camera tab 2 Open User Set Control catego...

Page 10: ...Volatile memory save function call sequence 1 UserMemoryBulkErase erase all user non volatile memory 2 UserMemoryPageSelector select page 255 0 in memory 256 bytes for each page 3 UserMemoryPageAll ar...

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